Adjustment of Peak Discharge Rates for Urbanization

by David L. Gundlach, (A.M.ASCE),

Serial Information: Journal of the Irrigation and Drainage Division, 1978, Vol. 104, Issue 3, Pg. 325-329

Document Type: Journal Paper


Various investigators have shown that changes from rural to urban conditions within a watershed, in general, significantly affect flood flows. Record annual peak discharge rates (or peak discharge rates above a given base) for a basin that has been undergoing a change in land-use conditions represent a nonstationary time series. The series. Must be adjusted to a specific land-use condition (typically present conditions) prior to performing a statistical frequency analysis. It is the aim of this not to present a procedure utilizing a single event rainfall-runoff model for transforming recorded peak discharges at a gaging station to a consistent set that reflects existing land-use conditions.

Subject Headings: Land use | Water discharge | Urban areas | Rural areas | Municipal water | Watersheds | Floods | Water flow

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