Model a Trapezoidal Pond in WWHM 2012
This article will quickly walk you through how to model a detention pond in the software the Western Washington Hydrology Model 2012. If you haven’t yet, please download a free copy of WWHM 2012 here.
Begin by opening up the software by double clicking on the WWHM 2012 icon.
Notice the opening screen will now appear. You should be able to see the WWHM 2012 map options.
2. Select a location on the map. You can change the county selected by clicking on the drop down menu and select the county and raingage where your project is located.
3. Add a basin element to the pre-developed scenario. Input 3 acres of “C, Forest, Flat” (Till Soil) to the landuse category.
4. Connect this basin element to Point of Compliance (POC 1) and run the model by selecting “Run Scenario”.
5. Now go to the mitigated scenario.
6. Add another landuse basin element. Enter 3 acres of “Roads/Flat” area to the basin.
7. Connect a trapezoidal pond element to the basin element. Connect the pond element to point of compliance 1.
8. The use can either a) manually enter dimensions into the pond element form, or use the auto-pond algorithm to automatically size the facility for the most optimal dimensions.
9. Select “Auto Pond”, to optimally size the facility. Move the slider all the way to the right for the most thorough construction. Select “Create Pond”.
10. Click “Ok” after autopond has completed running.
11. Click “Accept pond” and now view your facility in the element form. The trapezoidal pond element has been optimally sized for your project situation.
Interested in learning more? Take a look at our free, and paid WWHM 2012 courses that give you instruction on all aspects of the model. You can find the courses by clicking the button down below.
