Template:MODLFOW Model Calibration Workflow: Difference between revisions

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{{MODFLOW Calibration Parameters Workflow}}
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Revision as of 15:40, 26 July 2017

1. Create observation data.
1. Create an observation coverage.
Create a coverage with at least one Observation Points option turned on.
1. Create new coverage from scratch.
  1. Use the New Coverage right-click command.
  2. Use the Coverage Setup dialog to create a new coverage by selecting the desired coverage properties 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 setup.
2. Create observation points or arcs.
1. Create feature points, arcs, nodes and vertices.
In the map module, create feature objects in the active coverage.
  1. Use the Create Arc GMS 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 Point Create Points Tool.svg tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs, whether digitized or incorporated from a boundary condition or a material coverage, often need to be edited after initial creation.
1. Create additional vertices on arcs.
  1. Use the Create Vertex GMS Create Vertex.svg tool to add vertices along arcs.
2. Refine the arc shape.
  1. Use the Select Vertices GMS Select Vertex Tool.svg tool and the Select Points\Nodes GMS Select Node Tool.svg tool to move/edit existing arcs and refine the shape by dragging the nodes/vertices.
  2. Use the Select Arcs GMS 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 Vertices GMS Select Vertex Tool.svg tool.
  2. Select the Feature Objects | Vertices → Nodes command to split the arc into two arcs.
2. Add a node to the arc.
  1. Use the Create Point Create Points Tool.svg tool to add a node on an arc in order to split it into two arcs.
3. Connect the end of an existing arc to the middle of the arc.
  1. Use the Select Points\Nodes GMS Select Node Tool.svg tool to drag the node of an existing arc to anywhere in the middle of another arc. This will split the second arc into two arcs.
4. Add a new connecting arc.
  1. Use the Create Arc GMS Create Arc Tool.svg tool to start or end a new arc on an existing arc to split the existing arc into two arcs.
5. Split overlapping arcs using the Clean Options dialog.
  1. Select overlapping arcs using the Select Arcs GMS 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 Points\Nodes GMS Select Node Tool.svg tool.
  2. Click on the Feature Objects | Nodes → Vertices menu command to merge the arcs.
  3. If desired, the Select Vertices GMS Select Vertex Tool.svg tool can be used to select and delete the new vertex.
5. Transform arcs.
  1. Select the arc using the Select Arcs GMS Select Arc Tool.svg tool.
  2. Use the Edit | Transform command.
  3. Use the Transform dialog to scale, translate or rotate the arc.
3. Set observation point or arc attributes.
  1. With the Select Point/Node GMS Select Node Tool.svg tool, right-click on the observation point and select the Attribute Table command.
  2. Set the observation attributes in the Attributes Table dialog.
  3. With the Select Arc GMS Select Arc Tool.svg tool, right-click on the observation arc and select the Attribute Table command.
  4. Set the observation attributes in the Attributes Table dialog.
4. Re-run MODFLOW.
  1. Save Save Macro.svg the project.
  2. Run MODFLOW Run MODFLOW Macro.svg.
2. View observation data.
Create a plot of the observed data and note calibration values by doing the following:
1. Start the plot wizard.
  1. Select the Display | Plot Wizard menu command.
2. Select available plot type.
1. Computed vs. Observed Data plots.
1. Computed vs. Observed Data.
  1. Select Display | Plot Wizard to start the Plot Wizard.
  2. Select the "Computed vs. Observed Data" option on the left and click Next.
  3. Specify plot options in step 2 of the Plot Wizard then click Finish.
  4. Review plot window.
2. Computed vs. Observed Data (Weighted).
  1. Select Display | Plot Wizard to start the Plot Wizard.
  2. Select the "Computed vs. Observed Data (Weighted)" option on the left and click Next.
  3. Specify plot options in step 2 of the Plot Wizard then click Finish.
  4. Review plot window.
2. Residual vs. Observed Data plots.
1. Residual vs. Observed Data.
  1. Select Display | Plot Wizard to start the Plot Wizard.
  2. Select the "Residual vs. Observed" option on the left and click Next.
  3. Specify plot options in step 2 of the Plot Wizard then click Finish.
  4. Review plot window.
2. Residual vs. Observed Data (Weighted).
  1. Select Display | Plot Wizard to start the Plot Wizard.
  2. Select the "Residual vs. Observed (Weighted)" option on the left and click Next.
  3. Specify plot options in step 2 of the Plot Wizard then click Finish.
  4. Review plot window.
3. Parameter Sensitivity plot.
  1. Select Display | Plot Wizard to start the Plot Wizard.
  2. Select the "Parameter Sensitivity" option on the left and click Next.
  3. Specify plot options in step 2 of the Plot Wizard then click Finish.
  4. Review plot window.
4. Error vs. Simulation plot.
  1. Select Display | Plot Wizard to start the Plot Wizard.
  2. Select the "Error vs. Simulation" option on the left and click Next.
  3. Specify plot options in step 2 of the Plot Wizard then click Finish.
  4. Review plot window.
5. Error vs. Time Step plot.
  1. Select Display | Plot Wizard to start the Plot Wizard.
  2. Select the "Error vs. Time Step" option on the left and click Next.
  3. Specify plot options in step 2 of the Plot Wizard then click Finish.
  4. Review plot window.
6. Error Summary plot.
  1. Select Display | Plot Wizard to start the Plot Wizard.
  2. Select the "Error Summary" option on the left and click Next.
  3. Specify plot options in step 2 of the Plot Wizard then click Finish.
  4. Review plot window.
7. Time Series plot.
  1. Select Display | Plot Wizard to start the Plot Wizard.
  2. Select the "Time Series" option on the left and click Next.
  3. Specify plot options in step 2 of the Plot Wizard then click Finish.
  4. Review plot window.
8. Active Dataset Time Series plot.
  1. Select a dataset in Project Explorer.
  2. Select cells in the project.
  3. Select Display | Plot Wizard to start the Plot Wizard.
  4. Select the "Active Dataset Time Series" option on the left and click Next.
  5. Specify plot options in step 2 of the Plot Wizard then click Finish.
  6. Review plot window.
9. S/S Flow vs. Time plot.
  1. Select Display | Plot Wizard to start the Plot Wizard.
  2. Select the "S/S Flow vs. Time" option on the left and click Next.
  3. Specify plot options in step 2 of the Plot Wizard then click Finish.
  4. Review plot window.
10. Flow Budget vs. Time plot.
  1. Select Display | Plot Wizard to start the Plot Wizard.
  2. Select the "Flow Budget vs. Time" option on the left and click Next.
  3. Specify plot options in step 2 of the Plot Wizard then click Finish.
  4. Review plot window.
11. Gage Package Value vs. Time plot.
  1. Select Display | Plot Wizard to start the Plot Wizard.
  2. Select the "Gage Package Value vs. Time" option on the left and click Next.
  3. Specify plot options in step 2 of the Plot Wizard then click Finish.
  4. Review plot window.
3. Change parameters.
1. Change model parameters.
Model parameters are usually adjusted in the Map model on the appropriate coverage—usually the coverage with recharge or hydraulic conductivity values.
  1. With the Select Arc GMS Select Arc Tool.svg, Select Point/Node GMS Select Node Tool.svg, or Select Polygon GMS Select Polygon Tool.svg tool, right-click on the desired feature object and select the Attribute Table command.
  2. Adjust the attributes in the Attributes Table dialog to calibrate the model.
2. Map new parameters to MODFLOW.
  1. Select the conceptual model Conceptual Model Icon.svg.
  2. Select Feature Objects | Map → MODFLOW Map to MODFLOW Macro.svg.
  3. Select the appropriate options in the Map → Model dialog.
3. Re-run MODFLOW.
  1. Save Save Macro.svg the project.
  2. Run MODFLOW Run MODFLOW Macro.svg.
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