WMS:Riverside County Lag Time Equation: Difference between revisions
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where: | where: | ||
T<sub>LAG</sub> | T<sub>LAG</sub> = lag time in hours. | ||
L | L = maximum flow length in miles. | ||
L<sub>ca</sub> | L<sub>ca</sub> = length to the centroid in miles. | ||
S | 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: | The typical characteristics of watersheds for which the Riverside County equations were used include the following: | ||
Revision as of 20:55, 26 February 2013
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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