SELECTED EFFECTS OF SUBURBAN DEVELOPMENT ON RUNOFF IN SOUTH- COASTAL CALIFORNIA
The Stanford Watershed Model was used to simulate the effects of suburban development on the runoff from five drainage basins in the south-coastal area of California, a region with a semiarid climate and an average annual precipitation of 15 inches (381 millimetres). The drainage basins ranged in size from 3.72 to 83.4 square miles (9.64 to 216 square kilometres). Using the model, synthetic records of runoff for each basin were generated to represent various degrees of suburban development. Examination of the synthetic records indicated that suburban development has the following effects on runoff: 1. Average annual runoff from a drainage basin with an effective impervious area of 10 percent of the drainage area is approximately 2 inches (51 millimetres). The average annual runoff from a fully developed basin with an effective impervious area of 30 percent is approximately 4 inches (102 millmetres). 2. Suburban development can increase the magnitude of peak discharge with a recurrence interval of 2 years by a factor of three to six. 3. Peak discharges that have recurrence intervals greater than a limiting value ranging from 50 to 200 years or more are little affected by suburban development.
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Supplemental Notes:
- Proceedings of the National Symposium on Urban Hydrology and Sediment Control, July 28-31, 1975.
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Corporate Authors:
University of Kentucky, Lexington
Department of Civil Engineering
176 Raymond Building
Lexington, KY United States 40506-0281 -
Authors:
- Durbin, T J
- Conference:
- Publication Date: 1975-11
Media Info
- Features: Figures; References; Tables;
- Pagination: p. 209-217
Subject/Index Terms
- TRT Terms: Drainage basins; Peak discharge; Rainfall; Runoff; Simulation; Suburbs; Watersheds
- Subject Areas: Highways; Hydraulics and Hydrology;
Filing Info
- Accession Number: 00135900
- Record Type: Publication
- Report/Paper Numbers: UKY BU109
- Files: TRIS
- Created Date: Oct 26 1976 12:00AM