WMS:GSSHA Feature Nodes: Difference between revisions

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Feature points and nodes in GSSHA have several attributes that can be modified. The ''Properties'' dialog allows modification of the various attributes of feature arcs.  
The ''Coverage Properties'' dialog is where the attributes associated with feature points/nodes on the GSSHA coverage are defined. WMS automatically assigns the correct type (generic, link break, or junction) to each point/node based on the type of feature arcs connected to the node, although the point/node type is not displayed in this dialog. It is possible to change the feature type attributes that are displayed in the table, select whether to show attributes for all features or just the selected features, and to filter the data shown in the table based on specific attribute values.  
 
WMS automatically assigns the correct type (generic, link break, or junction) to each point/node based on the type of feature arcs connected to the node, although the point/node type is not displayed in the dialog. This dialog for feature points and nodes in GSSHA lists the various attributes associated with each feature point or note.
==GSSHA Feature Node Properties==
 
===Link===
This dialog is accessed either by double-clicking on a feature point or node or by selecting the ''Feature Objects'' | '''Attributes...''' menu command while in the '''Map''' module. Most of the attributes can be changed in this dialog, or by clicking a button in this dialog to open a separate dialog. The options for feature arcs are described in the [[WMS:GSSHA Feature Arcs|GSSHA Feature Arcs]] article.
The link number is assigned by WMS to nodes that have hydraulic structures defined.
 
==''Properties'' Dialog==
{{Wide image|GsshaNodeAtts.png|1500px|The ''Properties'' dialog is where the attributes are associated with feature points and nodes. Scroll to the right to see the full dialog.|700|none|alt=The ''Coverage Properties'' dialog is where the attributes are associated with feature points and nodes.|}}


===Hydraulic Structures===
;ID
Click on the '''Hydraulic Structures''' button to define hydraulic structures which exist in the GSSHA stream network. Link-break type nodes on GSSHA stream arcs (trapezoidal or cross-section) are used for defining known points of control and modification of the stream flow by in-stream hydraulic structures such as weirs and culverts. Hydraulic structures are represented as a separate link in the stream network in GSSHA. As such, if a feature node does not exist where a hydraulic structure exists, a feature node (with the link-break type) must be placed there.
:A unique ID assigned automatically by WMS. Not user editable.


There are three main types of hydraulic structures: weirs, culverts, and implicit defined structures. Any number of weirs, culverts, and/or curves may be specified together, but with only one instance of each curve type allowed.
;Link
:The link number, assigned by WMS to nodes that have hydraulic structures defined. Not user editable.


=====Weirs=====
;{{anchor|GSSHA Hydraulic Structures}}Hydraulic structures
*Horizontal Broad-Crested
:Clicking [[File:Dot dot dot button.png|16px]] brings up the [[WMS:GSSHA Hydraulic Structures|''GSSHA Hydraulic Structures'' dialog]].
**Parameters for a Horizontal Broad-crested Weir: crest length, discharge coefficient (forward flow), discharge coefficient (reverse flow), crest low point elevation
*Infinite Sag Vertical Curve
**Parameters for a Infinite Sag Vertical Curve: left slope, right slope, discharge coefficient (forward flow), discharge coefficient (reverse flow), crest low point elevation


=====Culverts=====
;Hydrograph output
*Round
:Turning on this option outputs a hydrograph for the outlet cell location to the OTL file. GSSHA can output hydrographs at specific nodes to the *.ohl file.
**Parameters for Round Culverts: diameter, upstream invert, downstream invert, inlet loss coefficient, reverse flow inlet loss coefficient, slope, length, Manning's n value
*Oval
**Parameters for Oval Culverts: axis width, axis height, upstream invert, downstream invert, inlet loss coefficient, reverse flow inlet loss coefficient, slope, length, Manning's n value
*Rectangular
**Parameters for Rectangular Culverts: box width, box height, upstream invert, downstream invert, inlet loss coefficient, reverse flow inlet loss coefficient, slope, length, Manning's n value


=====Hydraulic Structure Curves=====
;Sediment output
A hydraulic structure can be implicitly represented by either a rating curve, rule curve, or scheduled release curve. These curves will usually be used in conjunction with a lake polygon to accurately reflect a flow control device. There may be more than one curve type present, but only one of each curve type is allowed at a node. The button for adding a curve type is dimmed out when a curve of that type has been added.
:If the ''Soil Erosion'' option is selected in the [[WMS:GSSHA Job Control|''GSSHA Job Control'' dialog]], this option can be used to tell GSSHA to output the sediment load versus time at this location to the OSL file.
*Rating curve – piece-wise set of linear stage versus discharge values
*Rule curve – step-wise set of stage versus discharge values
*Scheduled release – step-wise set of time versus discharge values
Parameters: table of values representing the curve entered in the [[WMS:XY Series Editor|XY series editor]]''


===Pipe Junction===
;Groundwater BC
Data required for modeling storm/tile drain systems is entered at pipe junction nodes.
:A drop-down of groundwater boundary conditions for modeling groundwater interaction. See [[WMS:GSSHA Groundwater|GSSHA Groundwater]] for more information.
*"Generic" – No special boundary is desired. The default option.
*"Constant Head" – Groundwater level in the cell remains constant during the simulation. Value taken from the initial values assigned.
*"Static Well" &ndash; The cell will have a source/sink term of constant rate. Makes the ''Pump rate (m<sup>3</sup>/s)" column appear.
*"Dynamic Well" &ndash; Indicates that a dynamic, temporally varying, pumping well exists in the cell.  Makes the ''Pump rate" column appear.
;Pump rate (m<sup>3</sup>/s)
:Enter a decimal daily pump rate in m<sup>3</sup>/s.  


====Super Junction Number====
;Pump rate
The super junction number is computed by WMS by using the '''GSSHA | Number Storm Drain''' menu command in the 2D Grid Module, but can also be manually edited at any time.
:Click '''Pump Rate''' to bring up the [[WMS:XY Series Editor|''XY Series Editor'' dialog]]. This allows a time varying pump rate to be entered.


====Invert Elevation====
;Overland Flow BC Type
Enter the invert elevation (m) of the pipe at this location.
:A drop-down list with the following options:
:* "Constant slope" &ndash; Select this option enable the ''Constant BC'' column.
:* "Constant stage (water surface elevation)" &ndash; Select this option enable the ''Constant BC'' column.
:* "Variable stage (water surface elevation)" &ndash; Define a WSE curve by clicking [[File:Dot dot dot button.png|16px]] in the ''Variable BC'' column to bring up the [[WMS:XY Series Editor|''XY Series Editor'' dialog]].
:* "Variable flow (cms discharge)" &ndash; Define a discharge curve by clicking [[File:Dot dot dot button.png|16px]] in the ''Variable BC'' column to bring up the [[WMS:XY Series Editor|''XY Series Editor'' dialog]].
:* "Variable flow (cfs disharge)" &ndash; Define a discharge curve by clicking [[File:Dot dot dot button.png|16px]] in the ''Variable BC'' column to bring up the [[WMS:XY Series Editor|''XY Series Editor'' dialog]].
:* "Head difference rating curve" &ndash; Define a relationship between the BC cell/receiving cell head difference and the discharge to the receiving cell by clicking [[File:Dot dot dot button.png|16px]] in the ''Variable BC'' column to bring up the [[WMS:XY Series Editor|''XY Series Editor'' dialog]].
:* "Depth rating curve" &ndash; Define a relationship between the depth in the BC cell and the discharge to the receiving cell by clicking [[File:Dot dot dot button.png|16px]] in the ''Variable BC'' column to bring up the [[WMS:XY Series Editor|''XY Series Editor'' dialog]].
:* "Receiving cell" &ndash;


====Manhole Area====
;Variable BC
Enter the manhole area (m^2).
:Clicking [[File:Dot dot dot button.png|16px]] brings up the [[WMS:XY Series Editor|''XY Series Editor'' dialog]] where the specific type of series selected in the ''Overland Flow BC Type'' column can be entered.


====Inlet Type====
;Constant BC
The inlet type is used to account for flow into or out of the pipe network.  Select ''0-9 grate inlets'' to specify the amount of flow into the pipe network. Choose ''Empty to grid cell'' or ''Empty to channel'' to indicate that flow from the pipe network will be routed either back to the grid cell or into the 1-D stream network.
:Enter a decimal number for either the constant slope or constant stage (depending on what was selected in the ''Overland Flow BC Type'' column.


===Hydrograph Output===
;Solution Results
In addition to writing the hydrograph for the outlet cell location to the *.otl file, GSSHA can output hydrographs at specific nodes to the *.ohl file. Toggle on this option to tell GSSHA to output a hydrograph at this location.
:Clicking [[File:Dot dot dot button.png|16px]] brings up the [[WMS:GSSHA Solution Data|''GSSHA Solution Data'' dialog]] in order to visualize grid or link/node datasets for this node.


===Sediment Output===
;Observations
If the ''Soil Erosion'' option is selected in the ''GSSHA Job Control'', then this option can be used to tell GSSHA to output the sediment load versus time at this location to the *.osl file.
:Clicking [[File:Dot dot dot button.png|16px]] brings up the [[WMS:GSSHA Observations|''GSSHA Observations'' dialog]] to allow comparison of observed data to results simulated by GSSHA. This can be helpful for calibrating a GSSHA model.


===Groundwater BC===
;Stream BC Type
Choose one of the following groundwater boundary conditions for modeling groundwater interaction: Generic, Constant Head, Static Well, or Dynamic Well.
:The type of stream boundary condition. A drop-down with the following options:
:*"None" &ndash; No stream boundary condition.
:*"Variable flow (discharge)" &ndash; Activates the [[File:Dot dot dot button.png|16px]] button in the ''Variable Stream BC'' column.


====Pump Rate====
;Variable Stream BC
The static well option requires a daily pump rate (m^3/day) and the dynamic well option uses a time varying pump rate entered in the [[WMS:XY Series Editor|XY series editor]] by clicking on the '''Pump Rate''' button.
:Clicking [[File:Dot dot dot button.png|16px]] brings up the [[WMS:GSSHA Input Data|''GSSHA Input Data'' dialog]]


===Solution Results===
;Overland depth output
Click on this button to visualize grid or link/node datasets for this node. See [[WMS:GSSHA Solution Results|GSSHA Solution Results]] for more information.
:Turn this option on to have point stage and depth time series information output from any cell on the overland flow plane with a defined feature point or node.


===Observations===
;Overland WSE output
Click on this button to access the ''GSSHA Observations'' dialog and compare observed data to results simulated by GSSHA. This can be helpful for calibrating a GSSHA model.
:Turn this option on to have water surface elevation time series information output from any cell on the overland flow plane with a defined feature point or node.


==Related Topics==
;Model linkage output
* [[WMS:GSSHA Feature Arcs|GSSHA Feature Arcs]]
:Turn this option on to have model linkage information output. See [[WMS:GSSHA Model Linkage|GSSHA Model Linkage]] for more information.
* [[WMS:GSSHA Groundwater|GSSHA Groundwater]]
* [[WMS:GSSHA Calibration|GSSHA Calibration]]
* [[WMS:GSSHA Observation Points|GSSHA Observation Points]]
* [[WMS:GSSHA Solution Results|GSSHA Solution Results]]


{{GSSHAMain
==GSSHA Input Data Dialog==
[[File:GSSHA Input Data dialog.png|thumb|right|The ''GSSHA Input Data'' dialog.]]
The ''GSSHA Input Data'' dialog is accessible through the [[File:Dot dot dot button.png|16px]] button in the ''Variable Stream BC'' column of the feature points/nodes [[#Properties Dialog|''Properties'' dialog]]. Clicking '''Define''' on the ''Hydrograph'' line brings up the [[WMS:XY Series Editor|''XY Series Editor'' dialog]] where specific time and flow data can be entered and saved.


|PLinks=
* [http://gsshawiki.com/index.php?title=Pre-Processing:Watershed_Delineation_and_Grid_Construction Watershed Delinieation and Grid Construction]
* [http://gsshawiki.com/index.php?title=Routing:Lake_and_channel_routing Lake and Channel Routing]


|GUMLinks=
{{GSSHA Wiki}}
* [http://gsshawiki.com/index.php?title=Surface_Water_Routing:Surface_Water_Routing Surface Water Routing]
{{WMSMain}}


}}
[[Category:GSSHA|F]]
[[Category:WMS Feature Objects|GSSHA]]
[[Category:GSSHA Dialogs|Feature]]

Latest revision as of 16:04, 25 July 2024


Feature points and nodes in GSSHA have several attributes that can be modified. The Properties dialog allows modification of the various attributes of feature arcs.

WMS automatically assigns the correct type (generic, link break, or junction) to each point/node based on the type of feature arcs connected to the node, although the point/node type is not displayed in the dialog. This dialog for feature points and nodes in GSSHA lists the various attributes associated with each feature point or note.

This dialog is accessed either by double-clicking on a feature point or node or by selecting the Feature Objects | Attributes... menu command while in the Map module. Most of the attributes can be changed in this dialog, or by clicking a button in this dialog to open a separate dialog. The options for feature arcs are described in the GSSHA Feature Arcs article.

Properties Dialog

The Coverage Properties dialog is where the attributes are associated with feature points and nodes.
The Properties dialog is where the attributes are associated with feature points and nodes. Scroll to the right to see the full dialog.
ID
A unique ID assigned automatically by WMS. Not user editable.
Link
The link number, assigned by WMS to nodes that have hydraulic structures defined. Not user editable.
Hydraulic structures
Clicking Dot dot dot button.png brings up the GSSHA Hydraulic Structures dialog.
Hydrograph output
Turning on this option outputs a hydrograph for the outlet cell location to the OTL file. GSSHA can output hydrographs at specific nodes to the *.ohl file.
Sediment output
If the Soil Erosion option is selected in the GSSHA Job Control dialog, this option can be used to tell GSSHA to output the sediment load versus time at this location to the OSL file.
Groundwater BC
A drop-down of groundwater boundary conditions for modeling groundwater interaction. See GSSHA Groundwater for more information.
  • "Generic" – No special boundary is desired. The default option.
  • "Constant Head" – Groundwater level in the cell remains constant during the simulation. Value taken from the initial values assigned.
  • "Static Well" – The cell will have a source/sink term of constant rate. Makes the Pump rate (m3/s)" column appear.
  • "Dynamic Well" – Indicates that a dynamic, temporally varying, pumping well exists in the cell. Makes the Pump rate" column appear.
Pump rate (m3/s)
Enter a decimal daily pump rate in m3/s.
Pump rate
Click Pump Rate to bring up the XY Series Editor dialog. This allows a time varying pump rate to be entered.
Overland Flow BC Type
A drop-down list with the following options:
  • "Constant slope" – Select this option enable the Constant BC column.
  • "Constant stage (water surface elevation)" – Select this option enable the Constant BC column.
  • "Variable stage (water surface elevation)" – Define a WSE curve by clicking Dot dot dot button.png in the Variable BC column to bring up the XY Series Editor dialog.
  • "Variable flow (cms discharge)" – Define a discharge curve by clicking Dot dot dot button.png in the Variable BC column to bring up the XY Series Editor dialog.
  • "Variable flow (cfs disharge)" – Define a discharge curve by clicking Dot dot dot button.png in the Variable BC column to bring up the XY Series Editor dialog.
  • "Head difference rating curve" – Define a relationship between the BC cell/receiving cell head difference and the discharge to the receiving cell by clicking Dot dot dot button.png in the Variable BC column to bring up the XY Series Editor dialog.
  • "Depth rating curve" – Define a relationship between the depth in the BC cell and the discharge to the receiving cell by clicking Dot dot dot button.png in the Variable BC column to bring up the XY Series Editor dialog.
  • "Receiving cell" –
Variable BC
Clicking Dot dot dot button.png brings up the XY Series Editor dialog where the specific type of series selected in the Overland Flow BC Type column can be entered.
Constant BC
Enter a decimal number for either the constant slope or constant stage (depending on what was selected in the Overland Flow BC Type column.
Solution Results
Clicking Dot dot dot button.png brings up the GSSHA Solution Data dialog in order to visualize grid or link/node datasets for this node.
Observations
Clicking Dot dot dot button.png brings up the GSSHA Observations dialog to allow comparison of observed data to results simulated by GSSHA. This can be helpful for calibrating a GSSHA model.
Stream BC Type
The type of stream boundary condition. A drop-down with the following options:
  • "None" – No stream boundary condition.
  • "Variable flow (discharge)" – Activates the Dot dot dot button.png button in the Variable Stream BC column.
Variable Stream BC
Clicking Dot dot dot button.png brings up the GSSHA Input Data dialog
Overland depth output
Turn this option on to have point stage and depth time series information output from any cell on the overland flow plane with a defined feature point or node.
Overland WSE output
Turn this option on to have water surface elevation time series information output from any cell on the overland flow plane with a defined feature point or node.
Model linkage output
Turn this option on to have model linkage information output. See GSSHA Model Linkage for more information.

GSSHA Input Data Dialog

The GSSHA Input Data dialog.

The GSSHA Input Data dialog is accessible through the Dot dot dot button.png button in the Variable Stream BC column of the feature points/nodes Properties dialog. Clicking Define on the Hydrograph line brings up the XY Series Editor dialog where specific time and flow data can be entered and saved.


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