WMS:OC Rational Sub-area Data: Difference between revisions
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When setting up a Orange County Rational Method simulation, data must be entered for each sub-area. | When setting up a Orange County Rational Method simulation, data must be entered for each sub-area. | ||
[[Image:WMSmain.jpg|thumb|400 px]] | |||
*'''Area:''' The sub-area area (acres or ha.) can be automatically computed when using a DEM or TIN | |||
*'''% Nonmountainous and % Mountainous:''' The percentage of the sub-area that lies below and above 2000 ft, respectively. Use the Compute % Mountainous button to calculate these values using a DEM or TIN. | |||
'''% Nonmountainous and % Mountainous:''' The percentage of the sub-area that lies below and above 2000 ft, respectively. Use the Compute % Mountainous button to calculate these values using a DEM or TIN. | |||
===Initial Sub-area=== | ===Initial Sub-area=== | ||
Revision as of 23:35, 13 February 2013
When setting up a Orange County Rational Method simulation, data must be entered for each sub-area.
- Area: The sub-area area (acres or ha.) can be automatically computed when using a DEM or TIN
- % Nonmountainous and % Mountainous: The percentage of the sub-area that lies below and above 2000 ft, respectively. Use the Compute % Mountainous button to calculate these values using a DEM or TIN.
Initial Sub-area
- Tc: The time of concentration (min)
- Intensity: The rainfall intensity (in/hr) is automatically computed based on the Tc
Losses
- ap: Pervious area percentage
- Fp: Pervious area loss rate
- Fm: Maximum area loss rate
- Calculate Fm by toggling on the Compute Fm checkbox, entering values for ap and Fp, and using the Compute Fm button or click on the Compute Fm - GIS button to use GIS data.
Related Topics
- Losses
- Initial Sub-area Time of Concentration
- Orange County Rational Equation
- Orange County Rational Method
- Reach Routing
- Creating Watershed Models
WMS – Watershed Modeling System | ||
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