Page Information
The Santa Barbara Urban Hydrograph method is described in this document from the Washington State Department of Ecology (section 2.3.3), with the input attributes described below.
| Note |
|---|
| This method may not be available for your region. For more information, refer to the Regionalisation topic. |
Pervious Curve Number - The runoff curve number for the pervious fraction of the Catchment, as described in National Engineering Handbook - Section 4 (NEH-4) Chapter 9. Typical values vary from 20 for areas with high infiltration and interception capacities to 98 for impervious areas. It is a dimensionless number depending on hydrologic soil group, cover type, treatment, hydrological condition, and antecedent moisture conditions. This number has a valid range from 0 to 100 with typical values from 60 to 90 and 98 for impervious surfaces.
...