WMS:TR-55 Basin Data: Difference between revisions
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* [[WMS:TR-55 Time of Concentration|Time of Concentration.]] | * [[WMS:TR-55 Time of Concentration|Time of Concentration.]] | ||
* [[WMS:TR-55 Curve Number|SCS (NRCS) Curve Number.]] | * [[WMS:TR-55 Curve Number|SCS (NRCS) Curve Number.]] | ||
===Rainfall=== | |||
====24-hour rainfall depth and an appropriate time distribution curve==== | |||
Both the total rainfall and a dimensionless mass distribution must be specified to define precipitation for a basin. The total rainfall is entered in the rainfall edit field, and the distribution type is specified by selecting one of the standard NRCS (SCS) rainfall distribution types from the drop down list. The TR-55 reference manual shows a map (Appendix B-2 of the TR-55 reference[ftp://ftp.wcc.nrcs.usda.gov/wntsc/H&H/other/TR55documentation.pdf]) of distribution types for the US. | |||
Optionally, the effects of water bodies can be determined by entering the percent of the watershed covered by [[WMS:TR-55 Pond/Swamp Factor|lakes/ponds]]. | Optionally, the effects of water bodies can be determined by entering the percent of the watershed covered by [[WMS:TR-55 Pond/Swamp Factor|lakes/ponds]]. | ||
Revision as of 16:35, 22 February 2013
The following information must be determined and appropriate values entered for each sub-basin.
Rainfall
24-hour rainfall depth and an appropriate time distribution curve
Both the total rainfall and a dimensionless mass distribution must be specified to define precipitation for a basin. The total rainfall is entered in the rainfall edit field, and the distribution type is specified by selecting one of the standard NRCS (SCS) rainfall distribution types from the drop down list. The TR-55 reference manual shows a map (Appendix B-2 of the TR-55 reference[1]) of distribution types for the US.
Optionally, the effects of water bodies can be determined by entering the percent of the watershed covered by lakes/ponds.
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