SMS:SRH-2D Project Workflow

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This is a top level workflow. This workflow includes all of the specific workflows needed in creating an SRH-2D project. Newer and infrequent SMS users should start here. More experienced users may skip steps with which they are already familiar.

To build an SRH-2D model in SMS, use the following steps:

1. Start a new SMS project.
1. Start SMS, or clear existing projects in SMS.
  1. If SMS is already running, select File | Delete All.
  2. A new project can also be started by using CTRL + N.
2. Set the display projection.
  1. Select the Display | Projection... command.
  2. Set the horizontal and vertical projection using the Display Projection dialog.
2. Import data.
1. Gather and open image files.

Images are imported into the GIS module in SMS.

1. Open local images.
  1. Load images from local computer files using the File | Open... command.
  2. Alternatively, drag and drop the file into the Graphics Window in SMS.
2. Import images from the web.
1. Import static images.
  1. Use the File | Import from Web command.
  2. Select a location in the Virtual Map Locator.
  3. Set a projection for the project using the Display Projections dialog.
  4. Use the Data Service Options dialog to select a web service or catalog.
    • Use the Advanced options if needing to access a unique or unavailable data source.
  5. Save the data file and import the data into SMS.
2. Import dynamic images.
  1. Use the File | Get Online Maps command.
  2. Select a location in the Virtual Map Locator.
  3. Set a projection for the project using the Display Projections dialog.
  4. Use the Data Service Options dialog to select a web service or catalog.
  5. Save the data file and import the data into SMS.
2. Gather and open geometric data files.
1. Import map data.
  1. Use the File | Open... command to import map data such as Map files, boundary ID files, or boundary XY files.
  2. Alternately, drag and drop the file into the Graphics Window in SMS.
2. Import GIS data.
  1. Use the File | Open... command to import GIS data files such as Shapefiles, MIF/MID files, Lidar files, or raster files.
  2. Alternatively, drag and drop the file into the Graphics Window in SMS.
3. Import scatter data.
  1. Use File | Open... to open files with scatter data such as scatter point files, ASCII dataset files, binary dataset files, tabular data files, or XYZ files.
  2. Alternatively, drag and drop the file into the Graphics Window in SMS.
  3. Use the File Import Wizard to specify how to import the data.
4. Import CAD data.
  1. Verify the CAD file type is readable by SMS before importing it. SMS can import DXF and DWG files.
  2. Use the File | Open... command to launch the Open dialog (or drag and drop) to import the CAD files.
The data should load in layers into the Project Explorer.
5. Review and set object projections.
  1. Right-click on an object in the Project Explorer and select the Projection command.
  2. Set the horizontal and vertical projection using the Object Projection dialog.
  3. To set a global projection, use the Horizontal Projection dialog.
3. Review and edit the the background elevation (scatter) data.
1. Review elevation data for errors.
1. Use the Dataset Info dialog.
  1. Find the "Z", "elevation" or "depth" datasets on the geometric object (mesh, TIN, grid, raster) that is being reviewed
  2. Right-click on elevation data and select Info.
  3. Review information in the Dataset Info dialog to see that the range of values are as expected.
2. Use contour display options.
  1. Turn off Points and Triangles, then turn on Contours in the Scatter tab of the Display Options dialog.
  2. Set contour options in the Contours tab. The "Color Fill" option is recommended for this.
  3. Look for inconsistent points (points with values much higher/lower than their neighbors or regions where no data points exist).
  4. Verify that the region being modeled is covered by the elevation/depth data and there are no holes.
3. Rotate the elevation data.
  1. Use the Rotate Rotate Tool.svg tool to examine the elevation data from different angles.
2. Remove erroneous points and triangles.
After reviewing the imported data, points or triangles covering regions where there are no data points should be deleted. This could include outlier points or thin triangles.
1. Use the Scatter Options dialog.
  1. Open the Scatter Options dialog.
  2. Select or delete duplicate points.
  3. Select or delete long triangles.
  4. Select thin triangles.
  5. Use a triangulation optimization option.
2. Manually remove points.
  1. Use Select Scatter Point Select Point Tool.svg tool to select erroneous points in the scatter set.
  2. Review and edit point data in the Edit Window.
  3. Delete erroneous points.
3. Add breaklines.
  1. Select the Create Breakline SMS Create Nodestring Tool.svg tool.
  2. Click along points of a common elevation, such as at a bank toe or levee crest, to connect these points in the surface.
  3. Use the Backspace key to back up if an erroneous selection is made.
  4. Double-click or press Enter key to complete the breakline.
4. Merge elevation datasets.
  1. Select the Scatter | Merge Sets command.
  2. Use the Merge Scatter Sets dialog to select elevation data to be merged.
4. Define model limits (domain extents).
1. Create a Mesh Generator coverage in the Map module.
Create a new coverage with the "Mesh Generator" type.
1. Create new coverage from scratch.
  1. Select Map Data in the Project Explorer and use the New Coverage right-click command.
  2. Use the New Coverage dialog to create a new coverage by selecting the desired coverage type, and naming the coverage.
2. Create new coverage from an existing coverage.
  1. Use the Duplicate command on an existing coverage. This will copy any feature objects on the coverage.
  2. Use the Rename command to give the coverage a new name.
  3. Change the coverage type.
2. Digitize arcs to define domain edges.
1. Create feature arcs, nodes and vertices.
With the Mesh Generator coverage as the active coverage, create feature objects.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to create arcs in the map coverage.
  2. Begin creating a new arc by clicking in the graphics window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
  3. Double-click or press the Enter key to terminate the arc.
  4. Use the Create Feature Node Create Points Tool.svg tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
1. Create additional vertices on arcs.
  1. Use the Create Feature Vertex SMS Create Vertex Tool.svg tool to add vertices along arcs.
2. Refine the arc shape.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and the Select Feature Node SMS Select Node Tool.svg tool to move/edit existing arcs and refine the shape by dragging the nodes/vertices.
  2. Use the Select Feature Arc SMS Select Arc Tool.svg tool to move entire arcs .
3. Split arcs.
An existing arc can be split by:
1. Converting a vertex to a node.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and right-click on a vertex along an arc.
  2. Select the Convert to Node command to split the arc into two arcs.
2. Add a node the arc.
  1. Use the Create Feature Node Create Points Tool.svg tool to add a node on an arc in order to split it into two arcs.
3. Add a new connecting arc.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to start or end a new arc on an existing arc to split the existing arc into two arcs.
4. Use the Split Arcs Tool.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Split Arc(s)... command.
  2. Use the Split Arcs Tool to divide arcs.
5. Split overlapping arcs using the Clean Options dialog.
  1. Select overlapping arcs using the Select Feature Arc SMS Select Arc Tool.svg tool.
  2. Use the Feature Objects | Clean command to bring up the Clean Options dialog.
  3. Select the Intersect selected arcs option (for selected arcs) or Intersect arcs option (for all overlapping arcs) to split the arcs.
4. Merge arcs.
Two arcs that share an end node can be merged together.
  1. Select the shared node using the Select Feature Node SMS Select Node Tool.svg tool.
  2. Right-click on the node and select the Convert to Vertex command to merge the arcs.
  3. If desired, the Select Feature Vertex SMS Select Vertex Tool.svg tool can be used to select and delete the new vertex.
5. Smooth arcs.
The variability or roughness of an arc can be reduced.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Smooth Arc(s)... command.
  2. Use the Smooth Arcs Tool to reduce the variability of the arc.
6. Prune arcs.
Concave sections of the arc can be removed.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Prune Arc(s)... command.
  2. Use the Prune Arcs dialog to remove concave sections.
3. Generate domain extent arcs from other data sources.
Domain extents can be created from data outside of the Map module by converting the data to a mesh generator coverage.
1. Convert GIS objects to a map coverage.
1. Convert raster data to feature objects.
Converting raster data to feature objects can be done in one of two ways:
  1. Right-click on the raster data and select Convert To | Feature Objects which will create a new map coverage with arcs along all contours.
  2. Right-click on the raster data and select Convert To | Feature Objects at Elevation and enter a contour elevation to create arcs in a new coverage along the specified elevation.
2. Convert shapefile data to feature objects.
  1. Select a shapefile dataset in the GIS module and use the Mapping | Shape→Feature Objects command.
  2. Use the GIS to Feature Objects Wizard to specify how the shapefile attribute will be converted.
2. Convert a scatter dataset to a map coverage.
1. Convert a scatter contour value to a map coverage.
  1. Select the Data | Scatter Contour→Feature command.
  2. Use the Create Contour Arcs dialog to create arcs along the contour elevation into an existing coverage.
2. Convert scatter boundaries to a map coverage.
  1. Select the Data | Boundary→Feature command.
  2. Use the Select Coverage dialog to create a new coverage for the arcs or have the boundary arcs created on an existing coverage.
4. Merge domain coverages.
If domain extents have been created on multiple map coverages, these coverages need to be merged into a Mesh Generator coverage.
  1. Select multiple coverages that have feature objects which need to be on the same coverage.
  2. Use the Merge Coverages right-click command.
  3. Right-click on the new coverage and set the correct coverage type.
  4. Use the Clean Options dialog to resolve conflicting feature object data in the new coverage.
5. Generate a mesh.
1. Create arcs to capture key edges features (channel, embankments, etc.).
Create arcs inside the mesh domain to represent key edges for features such as channels, embankments, etc.
1. Create feature arcs, nodes and vertices.
With the Mesh Generator coverage as the active coverage, create feature objects.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to create arcs in the map coverage.
  2. Begin creating a new arc by clicking in the graphics window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
  3. Double-click or press the Enter key to terminate the arc.
  4. Use the Create Feature Node Create Points Tool.svg tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
1. Create additional vertices on arcs.
  1. Use the Create Feature Vertex SMS Create Vertex Tool.svg tool to add vertices along arcs.
2. Refine the arc shape.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and the Select Feature Node SMS Select Node Tool.svg tool to move/edit existing arcs and refine the shape by dragging the nodes/vertices.
  2. Use the Select Feature Arc SMS Select Arc Tool.svg tool to move entire arcs .
3. Split arcs.
An existing arc can be split by:
1. Converting a vertex to a node.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and right-click on a vertex along an arc.
  2. Select the Convert to Node command to split the arc into two arcs.
2. Add a node the arc.
  1. Use the Create Feature Node Create Points Tool.svg tool to add a node on an arc in order to split it into two arcs.
3. Add a new connecting arc.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to start or end a new arc on an existing arc to split the existing arc into two arcs.
4. Use the Split Arcs Tool.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Split Arc(s)... command.
  2. Use the Split Arcs Tool to divide arcs.
5. Split overlapping arcs using the Clean Options dialog.
  1. Select overlapping arcs using the Select Feature Arc SMS Select Arc Tool.svg tool.
  2. Use the Feature Objects | Clean command to bring up the Clean Options dialog.
  3. Select the Intersect selected arcs option (for selected arcs) or Intersect arcs option (for all overlapping arcs) to split the arcs.
4. Merge arcs.
Two arcs that share an end node can be merged together.
  1. Select the shared node using the Select Feature Node SMS Select Node Tool.svg tool.
  2. Right-click on the node and select the Convert to Vertex command to merge the arcs.
  3. If desired, the Select Feature Vertex SMS Select Vertex Tool.svg tool can be used to select and delete the new vertex.
5. Smooth arcs.
The variability or roughness of an arc can be reduced.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Smooth Arc(s)... command.
  2. Use the Smooth Arcs Tool to reduce the variability of the arc.
6. Prune arcs.
Concave sections of the arc can be removed.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Prune Arc(s)... command.
  2. Use the Prune Arcs dialog to remove concave sections.
2. Set vertex spacing on arcs to define mesh element size.
  1. Using the Select Feature Arc SMS Select Arc Tool.svg tool, select arcs and use the Redistribute right-click command.
  2. Use the Redistribute Vertices dialog to set the vertex distribution.
3. Create polygons in the Mesh Generator coverage.
Polygons are not created automatically when arcs are enclosed. To create polygons:
  1. Use the Feature Objects | Build Polygons command.
4. Specify mesh type for each polygon (pave / patch / none).
1. Select a polygon and open the 2D Mesh Polygon Properties dialog.
  1. Use the Select Poylgon SMS Select Polygon Tool.svg tool to select a polygon.
  2. Double-click on the selected polygon or use the Feature Objects | Attributes menu command.
2. Set the Mesh Type, Bathymetry Type, and Material Type for the polygon.
  1. Mesh types include Patch, Paving, Scalar Paving Density, and Constant Paving Density.
  2. Bathymetry type describes the elevation/topography source for the mesh nodes. Bathymetry types include a constant elevation value, interpolated elevation values from a scatter set, or interpolated elevation values from an existing mesh.
  3. Material types can be assigned to a polygon using materials previously created in Materials Data dialog.
3. Preview and edit the polygon mesh.
  1. Select the Preview Mesh button.
  2. Use the preview tools to edit the mesh.
  3. Set Arc Options to adjust distribution of vertices.
  4. Use Node Options to change how arcs are treated when using a patch mesh type.
5. Generate mesh from the Mesh Generator coverage.
  1. Select the Mesh Generator coverage and use the Map → 2D Mesh right-click command.
  2. Review the mesh quality for the newly generated mesh.
6. Define materials for SRH-2D.
1. Create an SRH-2D Materials coverage.
Create a new coverage with the SRH-2D "Materials" type.
1. Create new coverage from scratch.
  1. Select Map Data in the Project Explorer and use the New Coverage right-click command.
  2. Use the New Coverage dialog to create a new coverage by selecting the desired coverage type, and naming the coverage.
2. Create new coverage from an existing coverage.
  1. Use the Duplicate command on an existing coverage. This will copy any feature objects on the coverage.
  2. Use the Rename command to give the coverage a new name.
  3. Change the coverage type.
2. Digitize material areas (polygons).
1. If imported, convert GIS/CAD data to feature objects.
1. Convert GIS data to feature objects.
Convert GIS data, such as contained in a shapefile, to feature objects on a map coverage.
  1. Select the Mapping | Shapes → Feature Objects command.
  2. Use the GIS to Feature Objects Wizard to create feature objects on a map coverage.
2. Convert CAD data to feature objects.
  1. Right-click on the CAD dataset in the Project Explorer and select Convert | CAD → Map.
  2. Use the options in the Clean Options dialog.
  3. A new map coverage with converted CAD data will appear in the map module.
3. If needed, merge coverages.
  1. Select multiple coverages that have feature objects which need to be on the same coverage.
  2. Use the Merge Coverages right-click command.
  3. Right-click on the new coverage and set the correct coverage type.
  4. Use the Clean Options dialog to resolve conflicting feature object data in the new coverage.
2. Create enclosed arcs for material polygons.
1. Create feature arcs, nodes and vertices.
In the Map module, create feature objects in the active coverage.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to create arcs in the map coverage.
  2. Begin creating a new arc by clicking in the Graphics Window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
  3. Double-click or press the Enter key to terminate the arc.
  4. Use the Create Feature Node Create Points Tool.svg tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
1. Create additional vertices on arcs.
  1. Use the Create Feature Vertex SMS Create Vertex Tool.svg tool to add vertices along arcs.
2. Refine the arc shape.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and the Select Feature Node SMS Select Node Tool.svg tool to move/edit existing arcs and refine the shape by dragging the nodes/vertices.
  2. Use the Select Feature Arc SMS Select Arc Tool.svg tool to move entire arcs .
3. Split arcs.
An existing arc can be split by:
1. Converting a vertex to a node.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and right-click on a vertex along an arc.
  2. Select the Convert to Node command to split the arc into two arcs.
2. Add a node the arc.
  1. Use the Create Feature Node Create Points Tool.svg tool to add a node on an arc in order to split it into two arcs.
3. Add a new connecting arc.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to start or end a new arc on an existing arc to split the existing arc into two arcs.
4. Use the Split Arcs Tool.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Split Arc(s)... command.
  2. Use the Split Arcs Tool to divide arcs.
5. Split overlapping arcs using the Clean Options dialog.
  1. Select overlapping arcs using the Select Feature Arc SMS Select Arc Tool.svg tool.
  2. Use the Feature Objects | Clean command to bring up the Clean Options dialog.
  3. Select the Intersect selected arcs option (for selected arcs) or Intersect arcs option (for all overlapping arcs) to split the arcs.
4. Merge arcs.
Two arcs that share an end node can be merged together.
  1. Select the shared node using the Select Feature Node SMS Select Node Tool.svg tool.
  2. Right-click on the node and select the Convert to Vertex command to merge the arcs.
  3. If desired, the Select Feature Vertex SMS Select Vertex Tool.svg tool can be used to select and delete the new vertex.
5. Smooth arcs.
The variability or roughness of an arc can be reduced.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Smooth Arc(s)... command.
  2. Use the Smooth Arcs Tool to reduce the variability of the arc.
6. Prune arcs.
Concave sections of the arc can be removed.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Prune Arc(s)... command.
  2. Use the Prune Arcs dialog to remove concave sections.
3. Build polygons for material areas.
Polygons are not created automatically when arcs are enclosed. To create polygons:
  1. Use the Feature Objects | Build Polygons command.
3. Define material types and Manning’s roughness values.
1. Set material coverage properties.
  1. Right-click on the materials coverage and select the Materials Properties command.
  2. In the Materials Properties dialog, add materials to the material list and assign Manning's n values to each material. If desired, change the fill display properties (color and texture) of each material.
2. Manage multiple material coverages.
If using multiple material coverages, they can be managed by:
  1. Right-click on a materials coverage and select the Assign Materials To command.
  2. In the Assign Materials dialog, append or replace materials to the selected material coverage.
4. Assign materials to polygons in the materials coverage.
  1. Using the Select Feature Polygons SMS Select Polygon Tool.svg tool, select a polygon and use the Assign Material Properties command.
  2. In the Assign Material Properties, select the material to assign to the polygon.
7. Set up boundary conditions.
1. Create a Boundary Conditions coverage.
Create a new coverage with the SRH-2D "Boundary Conditions" type.
1. Create new coverage from scratch.
  1. Select Map Data in the Project Explorer and use the New Coverage right-click command.
  2. Use the New Coverage dialog to create a new coverage by selecting the desired coverage type, and naming the coverage.
2. Create new coverage from an existing coverage.
  1. Use the Duplicate command on an existing coverage. This will copy any feature objects on the coverage.
  2. Use the Rename command to give the coverage a new name.
  3. Change the coverage type.
2. Create and assign inflow boundary conditions.
1. Create an inflow boundary conditions arc.
1. Create feature arcs, nodes and vertices.
In the Map module, create feature objects in the active coverage.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to create arcs in the map coverage.
  2. Begin creating a new arc by clicking in the Graphics Window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
  3. Double-click or press the Enter key to terminate the arc.
  4. Use the Create Feature Node Create Points Tool.svg tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
1. Create additional vertices on arcs.
  1. Use the Create Feature Vertex SMS Create Vertex Tool.svg tool to add vertices along arcs.
2. Refine the arc shape.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and the Select Feature Node SMS Select Node Tool.svg tool to move/edit existing arcs and refine the shape by dragging the nodes/vertices.
  2. Use the Select Feature Arc SMS Select Arc Tool.svg tool to move entire arcs .
3. Split arcs.
An existing arc can be split by:
1. Converting a vertex to a node.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and right-click on a vertex along an arc.
  2. Select the Convert to Node command to split the arc into two arcs.
2. Add a node the arc.
  1. Use the Create Feature Node Create Points Tool.svg tool to add a node on an arc in order to split it into two arcs.
3. Add a new connecting arc.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to start or end a new arc on an existing arc to split the existing arc into two arcs.
4. Use the Split Arcs Tool.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Split Arc(s)... command.
  2. Use the Split Arcs Tool to divide arcs.
5. Split overlapping arcs using the Clean Options dialog.
  1. Select overlapping arcs using the Select Feature Arc SMS Select Arc Tool.svg tool.
  2. Use the Feature Objects | Clean command to bring up the Clean Options dialog.
  3. Select the Intersect selected arcs option (for selected arcs) or Intersect arcs option (for all overlapping arcs) to split the arcs.
4. Merge arcs.
Two arcs that share an end node can be merged together.
  1. Select the shared node using the Select Feature Node SMS Select Node Tool.svg tool.
  2. Right-click on the node and select the Convert to Vertex command to merge the arcs.
  3. If desired, the Select Feature Vertex SMS Select Vertex Tool.svg tool can be used to select and delete the new vertex.
5. Smooth arcs.
The variability or roughness of an arc can be reduced.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Smooth Arc(s)... command.
  2. Use the Smooth Arcs Tool to reduce the variability of the arc.
6. Prune arcs.
Concave sections of the arc can be removed.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Prune Arc(s)... command.
  2. Use the Prune Arcs dialog to remove concave sections.
2. Assign inflow boundary conditions.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Assign Linear BC... command.
  2. Specify the boundary condition type in the SRH-2D Linear BC dialog, which will typically be 'Inlet-Q' for inflow boundaries. Specify a constant or a time-varying discharge.
3. Create and assign outflow boundary conditions.
1. Create outflow boundary conditions arcs.
1. Create feature arcs, nodes and vertices.
In the Map module, create feature objects in the active coverage.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to create arcs in the map coverage.
  2. Begin creating a new arc by clicking in the Graphics Window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
  3. Double-click or press the Enter key to terminate the arc.
  4. Use the Create Feature Node Create Points Tool.svg tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
1. Create additional vertices on arcs.
  1. Use the Create Feature Vertex SMS Create Vertex Tool.svg tool to add vertices along arcs.
2. Refine the arc shape.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and the Select Feature Node SMS Select Node Tool.svg tool to move/edit existing arcs and refine the shape by dragging the nodes/vertices.
  2. Use the Select Feature Arc SMS Select Arc Tool.svg tool to move entire arcs .
3. Split arcs.
An existing arc can be split by:
1. Converting a vertex to a node.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and right-click on a vertex along an arc.
  2. Select the Convert to Node command to split the arc into two arcs.
2. Add a node the arc.
  1. Use the Create Feature Node Create Points Tool.svg tool to add a node on an arc in order to split it into two arcs.
3. Add a new connecting arc.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to start or end a new arc on an existing arc to split the existing arc into two arcs.
4. Use the Split Arcs Tool.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Split Arc(s)... command.
  2. Use the Split Arcs Tool to divide arcs.
5. Split overlapping arcs using the Clean Options dialog.
  1. Select overlapping arcs using the Select Feature Arc SMS Select Arc Tool.svg tool.
  2. Use the Feature Objects | Clean command to bring up the Clean Options dialog.
  3. Select the Intersect selected arcs option (for selected arcs) or Intersect arcs option (for all overlapping arcs) to split the arcs.
4. Merge arcs.
Two arcs that share an end node can be merged together.
  1. Select the shared node using the Select Feature Node SMS Select Node Tool.svg tool.
  2. Right-click on the node and select the Convert to Vertex command to merge the arcs.
  3. If desired, the Select Feature Vertex SMS Select Vertex Tool.svg tool can be used to select and delete the new vertex.
5. Smooth arcs.
The variability or roughness of an arc can be reduced.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Smooth Arc(s)... command.
  2. Use the Smooth Arcs Tool to reduce the variability of the arc.
6. Prune arcs.
Concave sections of the arc can be removed.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Prune Arc(s)... command.
  2. Use the Prune Arcs dialog to remove concave sections.
2. Assign outflow boundary conditions.
  1. Right-click on an outflow arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Assign Linear BC... command.
  2. Specify the boundary condition type in the SRH-2D Linear BC dialog, which will typically be 'Exit-H' for outflow boundaries. Specify a constant WSE, a time-varying WSE, or a rating curve.
4. Create and assign structures (optional).
1. Create a culvert structure.
1. Create two culvert boundary condition arcs.
Create two feature arcs representing the upstream and downstream locations of the culvert.
1. Create feature arcs, nodes and vertices.
In the Map module, create feature objects in the active coverage.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to create arcs in the map coverage.
  2. Begin creating a new arc by clicking in the Graphics Window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
  3. Double-click or press the Enter key to terminate the arc.
  4. Use the Create Feature Node Create Points Tool.svg tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
1. Create additional vertices on arcs.
  1. Use the Create Feature Vertex SMS Create Vertex Tool.svg tool to add vertices along arcs.
2. Refine the arc shape.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and the Select Feature Node SMS Select Node Tool.svg tool to move/edit existing arcs and refine the shape by dragging the nodes/vertices.
  2. Use the Select Feature Arc SMS Select Arc Tool.svg tool to move entire arcs .
3. Split arcs.
An existing arc can be split by:
1. Converting a vertex to a node.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and right-click on a vertex along an arc.
  2. Select the Convert to Node command to split the arc into two arcs.
2. Add a node the arc.
  1. Use the Create Feature Node Create Points Tool.svg tool to add a node on an arc in order to split it into two arcs.
3. Add a new connecting arc.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to start or end a new arc on an existing arc to split the existing arc into two arcs.
4. Use the Split Arcs Tool.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Split Arc(s)... command.
  2. Use the Split Arcs Tool to divide arcs.
5. Split overlapping arcs using the Clean Options dialog.
  1. Select overlapping arcs using the Select Feature Arc SMS Select Arc Tool.svg tool.
  2. Use the Feature Objects | Clean command to bring up the Clean Options dialog.
  3. Select the Intersect selected arcs option (for selected arcs) or Intersect arcs option (for all overlapping arcs) to split the arcs.
4. Merge arcs.
Two arcs that share an end node can be merged together.
  1. Select the shared node using the Select Feature Node SMS Select Node Tool.svg tool.
  2. Right-click on the node and select the Convert to Vertex command to merge the arcs.
  3. If desired, the Select Feature Vertex SMS Select Vertex Tool.svg tool can be used to select and delete the new vertex.
5. Smooth arcs.
The variability or roughness of an arc can be reduced.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Smooth Arc(s)... command.
  2. Use the Smooth Arcs Tool to reduce the variability of the arc.
6. Prune arcs.
Concave sections of the arc can be removed.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Prune Arc(s)... command.
  2. Use the Prune Arcs dialog to remove concave sections.
2. Assign HY-8 file.
  1. Right-click on the boundary conditions coverage and select the HY-8 Options... command.
  2. In the HY-8 Options dialog, specify a file with the needed HY-8 crossing definitions.
3. Assign culvert boundary conditions.
  1. Using the Select Feature Arc SMS Select Arc Tool.svg tool, select both culvert arcs.
  2. Right-click and select the Assign Linear BC... command.
  3. In the SRH-2D Linear BC dialog, assign the culvert boundary conditions specifying the upstream and downstream arcs and launching HY-8.
2. Create a gate structure.
1. Create two gate boundary condition arcs.
1. Create feature arcs, nodes and vertices.
In the Map module, create feature objects in the active coverage.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to create arcs in the map coverage.
  2. Begin creating a new arc by clicking in the Graphics Window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
  3. Double-click or press the Enter key to terminate the arc.
  4. Use the Create Feature Node Create Points Tool.svg tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
1. Create additional vertices on arcs.
  1. Use the Create Feature Vertex SMS Create Vertex Tool.svg tool to add vertices along arcs.
2. Refine the arc shape.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and the Select Feature Node SMS Select Node Tool.svg tool to move/edit existing arcs and refine the shape by dragging the nodes/vertices.
  2. Use the Select Feature Arc SMS Select Arc Tool.svg tool to move entire arcs .
3. Split arcs.
An existing arc can be split by:
1. Converting a vertex to a node.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and right-click on a vertex along an arc.
  2. Select the Convert to Node command to split the arc into two arcs.
2. Add a node the arc.
  1. Use the Create Feature Node Create Points Tool.svg tool to add a node on an arc in order to split it into two arcs.
3. Add a new connecting arc.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to start or end a new arc on an existing arc to split the existing arc into two arcs.
4. Use the Split Arcs Tool.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Split Arc(s)... command.
  2. Use the Split Arcs Tool to divide arcs.
5. Split overlapping arcs using the Clean Options dialog.
  1. Select overlapping arcs using the Select Feature Arc SMS Select Arc Tool.svg tool.
  2. Use the Feature Objects | Clean command to bring up the Clean Options dialog.
  3. Select the Intersect selected arcs option (for selected arcs) or Intersect arcs option (for all overlapping arcs) to split the arcs.
4. Merge arcs.
Two arcs that share an end node can be merged together.
  1. Select the shared node using the Select Feature Node SMS Select Node Tool.svg tool.
  2. Right-click on the node and select the Convert to Vertex command to merge the arcs.
  3. If desired, the Select Feature Vertex SMS Select Vertex Tool.svg tool can be used to select and delete the new vertex.
5. Smooth arcs.
The variability or roughness of an arc can be reduced.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Smooth Arc(s)... command.
  2. Use the Smooth Arcs Tool to reduce the variability of the arc.
6. Prune arcs.
Concave sections of the arc can be removed.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Prune Arc(s)... command.
  2. Use the Prune Arcs dialog to remove concave sections.
2. Assign gate boundary conditions.
  1. Using the Select Feature Arc SMS Select Arc Tool.svg tool, select both gate arcs.
  2. Right-click and select the Assign Linear BC... command.
  3. In the SRH-2D Linear BC dialog, assign the gate boundary conditions specifying the upstream and downstream arcs and the gate length, gate height, crest elevation, and type.
3. Modify the materials coverage.
  1. Switch to the SRH-2D materials coverage.
  2. Using the Create Feature Arc SMS Create Arc Tool.svg tool, create arcs for the enclosed area between the two structure arcs.
  3. Use the Build Polygons command to create polygons.
  4. Using the Select Feature Polygons SMS Select Polygon Tool.svg tool, select a polygon and use the Assign Material Properties command.
  5. In the Assign Material Properties, unassign the material type.
3. Create a bridge pressure flow structure.
1. Create two bridge pressure flow boundary condition arcs.
Create two feature arcs representing the upstream (beginning) and downstream (ending) locations of the pressure zone.
1. Create feature arcs, nodes and vertices.
In the Map module, create feature objects in the active coverage.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to create arcs in the map coverage.
  2. Begin creating a new arc by clicking in the Graphics Window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
  3. Double-click or press the Enter key to terminate the arc.
  4. Use the Create Feature Node Create Points Tool.svg tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
1. Create additional vertices on arcs.
  1. Use the Create Feature Vertex SMS Create Vertex Tool.svg tool to add vertices along arcs.
2. Refine the arc shape.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and the Select Feature Node SMS Select Node Tool.svg tool to move/edit existing arcs and refine the shape by dragging the nodes/vertices.
  2. Use the Select Feature Arc SMS Select Arc Tool.svg tool to move entire arcs .
3. Split arcs.
An existing arc can be split by:
1. Converting a vertex to a node.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and right-click on a vertex along an arc.
  2. Select the Convert to Node command to split the arc into two arcs.
2. Add a node the arc.
  1. Use the Create Feature Node Create Points Tool.svg tool to add a node on an arc in order to split it into two arcs.
3. Add a new connecting arc.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to start or end a new arc on an existing arc to split the existing arc into two arcs.
4. Use the Split Arcs Tool.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Split Arc(s)... command.
  2. Use the Split Arcs Tool to divide arcs.
5. Split overlapping arcs using the Clean Options dialog.
  1. Select overlapping arcs using the Select Feature Arc SMS Select Arc Tool.svg tool.
  2. Use the Feature Objects | Clean command to bring up the Clean Options dialog.
  3. Select the Intersect selected arcs option (for selected arcs) or Intersect arcs option (for all overlapping arcs) to split the arcs.
4. Merge arcs.
Two arcs that share an end node can be merged together.
  1. Select the shared node using the Select Feature Node SMS Select Node Tool.svg tool.
  2. Right-click on the node and select the Convert to Vertex command to merge the arcs.
  3. If desired, the Select Feature Vertex SMS Select Vertex Tool.svg tool can be used to select and delete the new vertex.
5. Smooth arcs.
The variability or roughness of an arc can be reduced.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Smooth Arc(s)... command.
  2. Use the Smooth Arcs Tool to reduce the variability of the arc.
6. Prune arcs.
Concave sections of the arc can be removed.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Prune Arc(s)... command.
  2. Use the Prune Arcs dialog to remove concave sections.
2. Assign bridge pressure flow boundary conditions.
  1. Using the Select Feature Arc SMS Select Arc Tool.svg tool, select both bridge pressure flow arcs.
  2. Right-click and select the Assign Linear BC... command.
  3. In the SRH-2D Linear BC dialog, assign the bridge pressure flow boundary conditions specifying the upstream and downstream arcs and the ceiling elevation and Manning roughness coefficient.
4. Create a weir structure.
1. Create two weir boundary condition arcs.
1. Create feature arcs, nodes and vertices.
In the Map module, create feature objects in the active coverage.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to create arcs in the map coverage.
  2. Begin creating a new arc by clicking in the Graphics Window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
  3. Double-click or press the Enter key to terminate the arc.
  4. Use the Create Feature Node Create Points Tool.svg tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
1. Create additional vertices on arcs.
  1. Use the Create Feature Vertex SMS Create Vertex Tool.svg tool to add vertices along arcs.
2. Refine the arc shape.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and the Select Feature Node SMS Select Node Tool.svg tool to move/edit existing arcs and refine the shape by dragging the nodes/vertices.
  2. Use the Select Feature Arc SMS Select Arc Tool.svg tool to move entire arcs .
3. Split arcs.
An existing arc can be split by:
1. Converting a vertex to a node.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and right-click on a vertex along an arc.
  2. Select the Convert to Node command to split the arc into two arcs.
2. Add a node the arc.
  1. Use the Create Feature Node Create Points Tool.svg tool to add a node on an arc in order to split it into two arcs.
3. Add a new connecting arc.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to start or end a new arc on an existing arc to split the existing arc into two arcs.
4. Use the Split Arcs Tool.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Split Arc(s)... command.
  2. Use the Split Arcs Tool to divide arcs.
5. Split overlapping arcs using the Clean Options dialog.
  1. Select overlapping arcs using the Select Feature Arc SMS Select Arc Tool.svg tool.
  2. Use the Feature Objects | Clean command to bring up the Clean Options dialog.
  3. Select the Intersect selected arcs option (for selected arcs) or Intersect arcs option (for all overlapping arcs) to split the arcs.
4. Merge arcs.
Two arcs that share an end node can be merged together.
  1. Select the shared node using the Select Feature Node SMS Select Node Tool.svg tool.
  2. Right-click on the node and select the Convert to Vertex command to merge the arcs.
  3. If desired, the Select Feature Vertex SMS Select Vertex Tool.svg tool can be used to select and delete the new vertex.
5. Smooth arcs.
The variability or roughness of an arc can be reduced.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Smooth Arc(s)... command.
  2. Use the Smooth Arcs Tool to reduce the variability of the arc.
6. Prune arcs.
Concave sections of the arc can be removed.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Prune Arc(s)... command.
  2. Use the Prune Arcs dialog to remove concave sections.
2. Assign weir boundary conditions.
  1. Using the Select Feature Arc SMS Select Arc Tool.svg tool, select both weir arcs.
  2. Right-click and select the Assign Linear BC... command.
  3. In the SRH-2D Linear BC dialog, assign the weir boundary conditions specifying the upstream and downstream arcs and the weir length, crest elevation, and type.
3. Modify the materials coverage.
  1. Switch to the SRH-2D materials coverage.
  2. Using the Create Feature Arc SMS Create Arc Tool.svg tool, create arcs for the enclosed area between the two structure arcs.
  3. Use the Build Polygons command to create polygons.
  4. Using the Select Feature Polygons SMS Select Polygon Tool.svg tool, select a polygon and use the Assign Material Properties command.
  5. In the Assign Material Properties, unassign the material type.
5. Create an internal sink structure.
1. Create an internal sink boundary condition arc.
1. Create feature arcs, nodes and vertices.
In the Map module, create feature objects in the active coverage.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to create arcs in the map coverage.
  2. Begin creating a new arc by clicking in the Graphics Window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
  3. Double-click or press the Enter key to terminate the arc.
  4. Use the Create Feature Node Create Points Tool.svg tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
1. Create additional vertices on arcs.
  1. Use the Create Feature Vertex SMS Create Vertex Tool.svg tool to add vertices along arcs.
2. Refine the arc shape.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and the Select Feature Node SMS Select Node Tool.svg tool to move/edit existing arcs and refine the shape by dragging the nodes/vertices.
  2. Use the Select Feature Arc SMS Select Arc Tool.svg tool to move entire arcs .
3. Split arcs.
An existing arc can be split by:
1. Converting a vertex to a node.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and right-click on a vertex along an arc.
  2. Select the Convert to Node command to split the arc into two arcs.
2. Add a node the arc.
  1. Use the Create Feature Node Create Points Tool.svg tool to add a node on an arc in order to split it into two arcs.
3. Add a new connecting arc.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to start or end a new arc on an existing arc to split the existing arc into two arcs.
4. Use the Split Arcs Tool.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Split Arc(s)... command.
  2. Use the Split Arcs Tool to divide arcs.
5. Split overlapping arcs using the Clean Options dialog.
  1. Select overlapping arcs using the Select Feature Arc SMS Select Arc Tool.svg tool.
  2. Use the Feature Objects | Clean command to bring up the Clean Options dialog.
  3. Select the Intersect selected arcs option (for selected arcs) or Intersect arcs option (for all overlapping arcs) to split the arcs.
4. Merge arcs.
Two arcs that share an end node can be merged together.
  1. Select the shared node using the Select Feature Node SMS Select Node Tool.svg tool.
  2. Right-click on the node and select the Convert to Vertex command to merge the arcs.
  3. If desired, the Select Feature Vertex SMS Select Vertex Tool.svg tool can be used to select and delete the new vertex.
5. Smooth arcs.
The variability or roughness of an arc can be reduced.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Smooth Arc(s)... command.
  2. Use the Smooth Arcs Tool to reduce the variability of the arc.
6. Prune arcs.
Concave sections of the arc can be removed.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Prune Arc(s)... command.
  2. Use the Prune Arcs dialog to remove concave sections.
2. Assign internal sink boundary conditions.
  1. Using the Select Feature Arc SMS Select Arc Tool.svg tool, select the internal sink arc.
  2. Right-click and select the Assign Linear BC... command.
  3. In the SRH-2D Linear BC dialog, assign the internal sink boundary conditions specifying the sink flow type. Enter a negative value to represent a source rather than a sink.
6. Create a link structure.
1. Create two link boundary condition arcs.
Create two feature arcs representing inflow and outflow locations of the link. Often these connect otherwise disconnected portions of a mesh.
1. Create feature arcs, nodes and vertices.
In the Map module, create feature objects in the active coverage.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to create arcs in the map coverage.
  2. Begin creating a new arc by clicking in the Graphics Window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
  3. Double-click or press the Enter key to terminate the arc.
  4. Use the Create Feature Node Create Points Tool.svg tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
1. Create additional vertices on arcs.
  1. Use the Create Feature Vertex SMS Create Vertex Tool.svg tool to add vertices along arcs.
2. Refine the arc shape.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and the Select Feature Node SMS Select Node Tool.svg tool to move/edit existing arcs and refine the shape by dragging the nodes/vertices.
  2. Use the Select Feature Arc SMS Select Arc Tool.svg tool to move entire arcs .
3. Split arcs.
An existing arc can be split by:
1. Converting a vertex to a node.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and right-click on a vertex along an arc.
  2. Select the Convert to Node command to split the arc into two arcs.
2. Add a node the arc.
  1. Use the Create Feature Node Create Points Tool.svg tool to add a node on an arc in order to split it into two arcs.
3. Add a new connecting arc.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to start or end a new arc on an existing arc to split the existing arc into two arcs.
4. Use the Split Arcs Tool.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Split Arc(s)... command.
  2. Use the Split Arcs Tool to divide arcs.
5. Split overlapping arcs using the Clean Options dialog.
  1. Select overlapping arcs using the Select Feature Arc SMS Select Arc Tool.svg tool.
  2. Use the Feature Objects | Clean command to bring up the Clean Options dialog.
  3. Select the Intersect selected arcs option (for selected arcs) or Intersect arcs option (for all overlapping arcs) to split the arcs.
4. Merge arcs.
Two arcs that share an end node can be merged together.
  1. Select the shared node using the Select Feature Node SMS Select Node Tool.svg tool.
  2. Right-click on the node and select the Convert to Vertex command to merge the arcs.
  3. If desired, the Select Feature Vertex SMS Select Vertex Tool.svg tool can be used to select and delete the new vertex.
5. Smooth arcs.
The variability or roughness of an arc can be reduced.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Smooth Arc(s)... command.
  2. Use the Smooth Arcs Tool to reduce the variability of the arc.
6. Prune arcs.
Concave sections of the arc can be removed.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Prune Arc(s)... command.
  2. Use the Prune Arcs dialog to remove concave sections.
2. Assign link boundary conditions.
  1. Using the Select Feature Arc SMS Select Arc Tool.svg tool, select both link arcs.
  2. Right-click and select the Assign Linear BC... command.
  3. In the SRH-2D Linear BC dialog, assign the link boundary conditions specifying the inflow and outflow arcs along with the inflow type and link lag method.
5. Create and assign wall boundary conditions (optional).
1. Create a wall boundary conditions arc.
1. Create feature arcs, nodes and vertices.
In the Map module, create feature objects in the active coverage.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to create arcs in the map coverage.
  2. Begin creating a new arc by clicking in the Graphics Window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
  3. Double-click or press the Enter key to terminate the arc.
  4. Use the Create Feature Node Create Points Tool.svg tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
1. Create additional vertices on arcs.
  1. Use the Create Feature Vertex SMS Create Vertex Tool.svg tool to add vertices along arcs.
2. Refine the arc shape.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and the Select Feature Node SMS Select Node Tool.svg tool to move/edit existing arcs and refine the shape by dragging the nodes/vertices.
  2. Use the Select Feature Arc SMS Select Arc Tool.svg tool to move entire arcs .
3. Split arcs.
An existing arc can be split by:
1. Converting a vertex to a node.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and right-click on a vertex along an arc.
  2. Select the Convert to Node command to split the arc into two arcs.
2. Add a node the arc.
  1. Use the Create Feature Node Create Points Tool.svg tool to add a node on an arc in order to split it into two arcs.
3. Add a new connecting arc.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to start or end a new arc on an existing arc to split the existing arc into two arcs.
4. Use the Split Arcs Tool.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Split Arc(s)... command.
  2. Use the Split Arcs Tool to divide arcs.
5. Split overlapping arcs using the Clean Options dialog.
  1. Select overlapping arcs using the Select Feature Arc SMS Select Arc Tool.svg tool.
  2. Use the Feature Objects | Clean command to bring up the Clean Options dialog.
  3. Select the Intersect selected arcs option (for selected arcs) or Intersect arcs option (for all overlapping arcs) to split the arcs.
4. Merge arcs.
Two arcs that share an end node can be merged together.
  1. Select the shared node using the Select Feature Node SMS Select Node Tool.svg tool.
  2. Right-click on the node and select the Convert to Vertex command to merge the arcs.
  3. If desired, the Select Feature Vertex SMS Select Vertex Tool.svg tool can be used to select and delete the new vertex.
5. Smooth arcs.
The variability or roughness of an arc can be reduced.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Smooth Arc(s)... command.
  2. Use the Smooth Arcs Tool to reduce the variability of the arc.
6. Prune arcs.
Concave sections of the arc can be removed.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Prune Arc(s)... command.
  2. Use the Prune Arcs dialog to remove concave sections.
2. Assign wall boundary conditions.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Assign Linear BC... command.
  2. In the SRH-2D Linear BC dialog, assign the wall parameters with or without extra roughness.
8. Set monitoring lines and points.
1. Create a Monitor coverage.
Create a new coverage with the SRH-2D "Monitor" type.
1. Create new coverage from scratch.
  1. Select Map Data in the Project Explorer and use the New Coverage right-click command.
  2. Use the New Coverage dialog to create a new coverage by selecting the desired coverage type, and naming the coverage.
2. Create new coverage from an existing coverage.
  1. Use the Duplicate command on an existing coverage. This will copy any feature objects on the coverage.
  2. Use the Rename command to give the coverage a new name.
  3. Change the coverage type.
2. Create monitor-line boundary condition arcs and points.
1. Create feature arcs, nodes and vertices.
In the Map module, create feature objects in the active coverage.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to create arcs in the map coverage.
  2. Begin creating a new arc by clicking in the Graphics Window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
  3. Double-click or press the Enter key to terminate the arc.
  4. Use the Create Feature Node Create Points Tool.svg tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
1. Create additional vertices on arcs.
  1. Use the Create Feature Vertex SMS Create Vertex Tool.svg tool to add vertices along arcs.
2. Refine the arc shape.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and the Select Feature Node SMS Select Node Tool.svg tool to move/edit existing arcs and refine the shape by dragging the nodes/vertices.
  2. Use the Select Feature Arc SMS Select Arc Tool.svg tool to move entire arcs .
3. Split arcs.
An existing arc can be split by:
1. Converting a vertex to a node.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and right-click on a vertex along an arc.
  2. Select the Convert to Node command to split the arc into two arcs.
2. Add a node the arc.
  1. Use the Create Feature Node Create Points Tool.svg tool to add a node on an arc in order to split it into two arcs.
3. Add a new connecting arc.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to start or end a new arc on an existing arc to split the existing arc into two arcs.
4. Use the Split Arcs Tool.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Split Arc(s)... command.
  2. Use the Split Arcs Tool to divide arcs.
5. Split overlapping arcs using the Clean Options dialog.
  1. Select overlapping arcs using the Select Feature Arc SMS Select Arc Tool.svg tool.
  2. Use the Feature Objects | Clean command to bring up the Clean Options dialog.
  3. Select the Intersect selected arcs option (for selected arcs) or Intersect arcs option (for all overlapping arcs) to split the arcs.
4. Merge arcs.
Two arcs that share an end node can be merged together.
  1. Select the shared node using the Select Feature Node SMS Select Node Tool.svg tool.
  2. Right-click on the node and select the Convert to Vertex command to merge the arcs.
  3. If desired, the Select Feature Vertex SMS Select Vertex Tool.svg tool can be used to select and delete the new vertex.
5. Smooth arcs.
The variability or roughness of an arc can be reduced.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Smooth Arc(s)... command.
  2. Use the Smooth Arcs Tool to reduce the variability of the arc.
6. Prune arcs.
Concave sections of the arc can be removed.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Prune Arc(s)... command.
  2. Use the Prune Arcs dialog to remove concave sections.
9. SRH-2D simulation setup.
1. Create a new SRH-2D simulation.
After creating the components of a simulation, create a new SRH-2D simulation.
  1. Right-click in the Project Explorer and select the New Simulations | SRH-2D command.
2. Add SRH-2D simulation components.
To link components to the simulation, do one of the following.
  1. Right-click on the component and select the simulation name from the Link To submenu.
  2. In the Project Explorer, click and drag items under the simulation object.
3. Set SRH-2D model parameters.
  1. Right-click on the simulation and select the Model Control command.
  2. Set the model parameters in the SRH-2D Model Control dialog.
4. Check the model.
  1. Right-click on the simulation and select the Model Check command.
  2. If the Model Checker dialog appears, resolve issues.
5. Run the SRH-2D simulation.
  1. Right-click on the SRH-2D simulation and select Save, Export, and Launch SRH to run the simulation.
10. Review results.
1. Load solution files.
The solution file should load after running SRH-2D assuming the Load Solution option was checked in the model wrapper before exiting the model run. If loading the solution file separately from the model run, do the following:
  1. Open the *_XMDF.h5 output file generated from the model run.
2. Review results datasets and data visualization.
1. Manually review dataset solutions.
  1. In the Project Explorer, click on solution dataset created from the simulation run and view results in the Graphics Window.
  2. Click through the time steps for each dataset to see changes over time in the Graphics Window.
2. Create a film loop visualization.
  1. Select a solution dataset and use the Data | Film Loop menu command.
  2. Use the Film Loop Setup wizard to specify the animation parameters.
  3. Save and view the animation file.
3. Use an observation profile plot.
1. Create an observation coverage.
Create a new coverage with the "Observation" type.
  1. Select Map Data in the Project Explorer and use the New Coverage right-click command.
  2. Use the New Coverage dialog to create a new coverage by selecting the desired coverage type, and naming the coverage.
2. Create observation arcs in the observation coverage.
1. Create feature arcs, nodes and vertices.
In the Map module, create feature objects in the active coverage.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to create arcs in the map coverage.
  2. Begin creating a new arc by clicking in the Graphics Window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
  3. Double-click or press the Enter key to terminate the arc.
  4. Use the Create Feature Node Create Points Tool.svg tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
1. Create additional vertices on arcs.
  1. Use the Create Feature Vertex SMS Create Vertex Tool.svg tool to add vertices along arcs.
2. Refine the arc shape.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and the Select Feature Node SMS Select Node Tool.svg tool to move/edit existing arcs and refine the shape by dragging the nodes/vertices.
  2. Use the Select Feature Arc SMS Select Arc Tool.svg tool to move entire arcs .
3. Split arcs.
An existing arc can be split by:
1. Converting a vertex to a node.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and right-click on a vertex along an arc.
  2. Select the Convert to Node command to split the arc into two arcs.
2. Add a node the arc.
  1. Use the Create Feature Node Create Points Tool.svg tool to add a node on an arc in order to split it into two arcs.
3. Add a new connecting arc.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to start or end a new arc on an existing arc to split the existing arc into two arcs.
4. Use the Split Arcs Tool.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Split Arc(s)... command.
  2. Use the Split Arcs Tool to divide arcs.
5. Split overlapping arcs using the Clean Options dialog.
  1. Select overlapping arcs using the Select Feature Arc SMS Select Arc Tool.svg tool.
  2. Use the Feature Objects | Clean command to bring up the Clean Options dialog.
  3. Select the Intersect selected arcs option (for selected arcs) or Intersect arcs option (for all overlapping arcs) to split the arcs.
4. Merge arcs.
Two arcs that share an end node can be merged together.
  1. Select the shared node using the Select Feature Node SMS Select Node Tool.svg tool.
  2. Right-click on the node and select the Convert to Vertex command to merge the arcs.
  3. If desired, the Select Feature Vertex SMS Select Vertex Tool.svg tool can be used to select and delete the new vertex.
5. Smooth arcs.
The variability or roughness of an arc can be reduced.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Smooth Arc(s)... command.
  2. Use the Smooth Arcs Tool to reduce the variability of the arc.
6. Prune arcs.
Concave sections of the arc can be removed.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Prune Arc(s)... command.
  2. Use the Prune Arcs dialog to remove concave sections.
3. Create an observation plot.
  1. Select Display | Plot Wizard to start the Plot Wizard.
  2. Select the "Observation Profile" option on the left and click Next.
  3. Select arcs, datasets, and time steps to be plotted.
  4. Review plot window.
4. Create and compare datasets.
  1. Select the Data | Dataset Toolbox menu command.
  2. In the Dataset Toolbox, compare datasets by subtracting the alternate dataset from the base dataset.
  3. New dataset can be generated in the Dataset Toolbox using the Data Calculator.
5. Create a functional surface view.
1. Turn on functional surface display options.
  1. Select the Display Options Display Options Macro.svg macro.
  2. In the Display Options dialog, under the 2D Mesh tab, turn on the Functional Surface option and click the Options button next to it.
  3. Set options in the Functional Surface Options dialog.
2. View the functional surface.
  1. Use the Rotate Rotate Tool.svg tool to view the functional surface.
6. Turn on vector display options.
  1. Select the Display Options Display Options Macro.svg macro.
  2. In the Display Options dialog, turn on the Vectors option under the 2D Mesh tab.
  3. Select the Vectors tab and set vector display options.
7. Use a Plot Data coverage.
A Plot Data coverage is used to show the location of a bridge or culvert on an observation profile plot.
1. Create a Plot Data coverage.
Create a new coverage with the "Plot Data" type.
  1. Select Map Data in the Project Explorer and use the New Coverage right-click command.
  2. Use the New Coverage dialog to create a new coverage by selecting the desired coverage type, and naming the coverage.
2. Create polygons in the Plot Data coverage to represent the bridge or culvert.
1. Create enclosed arcs for polygons.
1. Create feature arcs, nodes and vertices.
In the Map module, create feature objects in the active coverage.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to create arcs in the map coverage.
  2. Begin creating a new arc by clicking in the Graphics Window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
  3. Double-click or press the Enter key to terminate the arc.
  4. Use the Create Feature Node Create Points Tool.svg tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs often need to be edited after initial creation.
1. Create additional vertices on arcs.
  1. Use the Create Feature Vertex SMS Create Vertex Tool.svg tool to add vertices along arcs.
2. Refine the arc shape.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and the Select Feature Node SMS Select Node Tool.svg tool to move/edit existing arcs and refine the shape by dragging the nodes/vertices.
  2. Use the Select Feature Arc SMS Select Arc Tool.svg tool to move entire arcs .
3. Split arcs.
An existing arc can be split by:
1. Converting a vertex to a node.
  1. Use the Select Feature Vertex SMS Select Vertex Tool.svg tool and right-click on a vertex along an arc.
  2. Select the Convert to Node command to split the arc into two arcs.
2. Add a node the arc.
  1. Use the Create Feature Node Create Points Tool.svg tool to add a node on an arc in order to split it into two arcs.
3. Add a new connecting arc.
  1. Use the Create Feature Arc SMS Create Arc Tool.svg tool to start or end a new arc on an existing arc to split the existing arc into two arcs.
4. Use the Split Arcs Tool.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Split Arc(s)... command.
  2. Use the Split Arcs Tool to divide arcs.
5. Split overlapping arcs using the Clean Options dialog.
  1. Select overlapping arcs using the Select Feature Arc SMS Select Arc Tool.svg tool.
  2. Use the Feature Objects | Clean command to bring up the Clean Options dialog.
  3. Select the Intersect selected arcs option (for selected arcs) or Intersect arcs option (for all overlapping arcs) to split the arcs.
4. Merge arcs.
Two arcs that share an end node can be merged together.
  1. Select the shared node using the Select Feature Node SMS Select Node Tool.svg tool.
  2. Right-click on the node and select the Convert to Vertex command to merge the arcs.
  3. If desired, the Select Feature Vertex SMS Select Vertex Tool.svg tool can be used to select and delete the new vertex.
5. Smooth arcs.
The variability or roughness of an arc can be reduced.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Smooth Arc(s)... command.
  2. Use the Smooth Arcs Tool to reduce the variability of the arc.
6. Prune arcs.
Concave sections of the arc can be removed.
  1. Right-click on an arc using the Select Feature Arc SMS Select Arc Tool.svg tool and select the Prune Arc(s)... command.
  2. Use the Prune Arcs dialog to remove concave sections.
2. Build polygons.
Polygons are not created automatically when arcs are enclosed. To create polygons:
  1. Use the Feature Objects | Build Polygons command.
3. Assign plot data attributes.
  1. Using the Select Feature Polygon SMS Select Polygon Tool.svg tool, right-click on polygons and select the Attributes command.
  2. Enter attributes in the Plot Data dialog.
4. Create an observation plot using the Plot Data coverage.
  1. Select Display | Plot Wizard to start the Plot Wizard.
  2. Select the "Observation Profile" option on the left and click Next.
  3. Select arcs, plot data coverage, datasets, and time steps to be plotted.
  4. Review plot window.