uc_composite_CN: Composite CN (Curve Number) with Unconnected Impervious Area

In iemisc: Irucka Embry's Miscellaneous Functions

Composite CN (Curve Number) with Unconnected Impervious Area

Description

This function computes the composite CN (Curve Number) for unconnected impervious areas and total impervious areas less than 30 percent.

Usage

uc_composite_CN(pervious_CN, impervious, R)

Arguments

pervious_CN	numeric vector containing the pervious runoff curve number
impervious	numeric vector containing the percent imperviousness
R	numeric vector containing the ratio of unconnected impervious area to total impervious area

Value

the Composite Runoff Curve Number as a single numeric vector, in the range [0, 100]

Author(s)

Irucka Embry

References

United States Department of Agriculture Natural Resources Conservation Service Conservation Engineering Division, "Urban Hydrology for Small Watersheds Technical Release 55 (TR-55)", June 1986, pages 2-11 - 2-16, https://directives.sc.egov.usda.gov/OpenNonWebContent.aspx?content=22162.wba

Examples

# Please refer to iemiscdata: Weighted CN Calculations Using the Composite CN
# vignette in the iemiscdata package

iemisc documentation built on Sept. 25, 2023, 5:09 p.m.