WMS:Riverside County Lag Time Equation: Difference between revisions
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Revision as of 20:26, 31 May 2008
The Riverside County Flood Control and Water Conservancy District developed three different lag equations corresponding to mountainous, foothill, and valley areas near Riverside County, California (Anonymous, 1963).
- (Mountainous) 15.19
- (Foothills) 15.20
- (Valleys) 15.21
where:
TLAG - lag time in hours.
L - maximum flow length in miles.
Lca - length to the centroid in miles.
S - weighted slope along the maximum flow path length in ft/mile.
The typical characteristics of watersheds for which the Riverside County equations were used include the following:
Areas from 2 to 650 square miles.
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