WMS:OC Rational Job Control: Difference between revisions
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[[Image: | [[Image:OC_Reational_Job_control.png|thumb|250 px|''OC Rational Method – Job Control'' dialog]] | ||
The Job Control parameters include all of the universal data necessary to run an Orange County analysis that are not a part of a basin, reach, or reservoir. The following are the specific parameters defined as part of job control: | The ''OC Rational Method – Job Control'' parameters include all of the universal data necessary to run an Orange County analysis that are not a part of a basin, reach, or reservoir. The following are the specific parameters defined as part of job control: | ||
*'''Units''' – By default Orange County performs computations in English units, however metric unit calculations can be specified. | *'''Units''' – By default Orange County performs computations in English units, however metric unit calculations can be specified. | ||
*'''Frequency''' – Select the return period of the design storm. Non-mountainous and mountainous IDF curve values are updated based on this selection. | *'''Frequency''' – Select the return period of the design storm. Non-mountainous and mountainous IDF curve values are updated based on this selection. Enter IDF curve values for the 500-yr storm. | ||
*'''Expected Value''' – Toggle this check box on to do an expected value analysis. IDF curves and losses will be automatically updated for each sub-area if they have already been computed. | *'''Expected Value''' – Toggle this check box on to do an expected value analysis. IDF curves and losses will be automatically updated for each sub-area if they have already been computed. | ||
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IDF (intensity-duration-frquency) curves in Orange County are calculated differently depending on the location of the analysis. This section is subdivided into non-mountainous (areas below 2000 feet) and mountainous (areas above 2000 feet) regions. | IDF (intensity-duration-frquency) curves in Orange County are calculated differently depending on the location of the analysis. This section is subdivided into non-mountainous (areas below 2000 feet) and mountainous (areas above 2000 feet) regions. | ||
*'''Non-mountainous''' – The IDF curves are generated using a regression equation | *'''Non-mountainous''' – The IDF curves are generated using a regression equation ''I = atb'' where: | ||
** | ** ''I'' – Rainfall intensity (in/hr, mm/hr) | ||
** | ** ''t'' – Duration (min) | ||
** | ** ''a, b'' – Regression equation coefficients | ||
*'''Mountainous''' – The IDF curves are generated by interpolating between known intensities at specified time values. | *'''Mountainous''' – The IDF curves are generated by interpolating between known intensities at specified time values. | ||
==Related Topics== | ==Related Topics== | ||
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{{WMSMain}} | {{WMSMain}} | ||
[[Category:OC Rational| | [[Category:OC Rational|J]] | ||
[[Category:WMS Parameters|O]] | [[Category:WMS Parameters|O]] | ||
[[Category:WMS Job Control|OC Rational]] | |||
[[Category:OC Rational Dialogs|J]] | |||
[[Category:Equations|OC Rational]] | |||
Latest revision as of 15:58, 14 December 2023
The OC Rational Method – Job Control parameters include all of the universal data necessary to run an Orange County analysis that are not a part of a basin, reach, or reservoir. The following are the specific parameters defined as part of job control:
- Units – By default Orange County performs computations in English units, however metric unit calculations can be specified.
- Frequency – Select the return period of the design storm. Non-mountainous and mountainous IDF curve values are updated based on this selection. Enter IDF curve values for the 500-yr storm.
- Expected Value – Toggle this check box on to do an expected value analysis. IDF curves and losses will be automatically updated for each sub-area if they have already been computed.
IDF Curves
IDF (intensity-duration-frquency) curves in Orange County are calculated differently depending on the location of the analysis. This section is subdivided into non-mountainous (areas below 2000 feet) and mountainous (areas above 2000 feet) regions.
- Non-mountainous – The IDF curves are generated using a regression equation I = atb where:
- I – Rainfall intensity (in/hr, mm/hr)
- t – Duration (min)
- a, b – Regression equation coefficients
- Mountainous – The IDF curves are generated by interpolating between known intensities at specified time values.
Related Topics
WMS – Watershed Modeling System | ||
|---|---|---|
| Modules: | Terrain Data • Drainage • Map • Hydrologic Modeling • River • GIS • 2D Grid • 2D Scatter |  |
| Models: | CE-QUAL-W2 • GSSHA • HEC-1 • HEC-HMS • HEC-RAS • HSPF • MODRAT • NSS • OC Hydrograph • OC Rational • Rational • River Tools • Storm Drain • SMPDBK • SWMM • TR-20 • TR-55 | |
| Toolbars: | Modules • Macros • Units • Digitize • Static Tools • Dynamic Tools • Drawing • Get Data Tools | |
| Aquaveo | ||
