WMS:Taylor Schwartz Lag Time Equation: Difference between revisions

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Taylor and Schwartz (1952) developed an equation for estimating Snyder unit hydrograph parameters that was used for 20 different watersheds in the northeastern region of the U.S. Their equations are as follows:
Taylor and Schwartz (1952) developed an equation for estimating Snyder unit hydrograph parameters that was used for 20 different watersheds in the northeastern region of the U.S. Their equations are as follows:


[[Image:image0119.jpg]]
:<math>C_t = \frac {0.6}{ \sqrt {S}}</math>


[[Image:image120.gif]]
:<math>T_{LAG} = C_t \ast (L \ast L_{CA})^{0.3} </math>


where:
where:


<math>C_t</math> = coefficient of watershed topography based on watershed slope.
:''C<sub>t</sub>'' = coefficient of watershed topography based on watershed slope.


<math>S</math> = weighted slope of maximum flow path in ft/ft.
:''S'' = weighted slope of maximum flow path in ft/ft.


<math>T_{LAG}</math> = watershed lag time in hours.
:''T<sub>LAG</sub>'' = watershed lag time in hours.


<math>L</math> = maximum flow length in miles.
:''L'' = maximum flow length in miles.


<math>L_{ca}</math> = length to the centroid in miles.
:''L<sub>ca</sub>'' = length to the centroid in miles.




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[[Category:Equations|Taylor]]
[[Category:WMS Basins|Taylor]]
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Latest revision as of 15:15, 29 September 2017

Taylor and Schwartz (1952) developed an equation for estimating Snyder unit hydrograph parameters that was used for 20 different watersheds in the northeastern region of the U.S. Their equations are as follows:

where:

Ct = coefficient of watershed topography based on watershed slope.
S = weighted slope of maximum flow path in ft/ft.
TLAG = watershed lag time in hours.
L = maximum flow length in miles.
Lca = length to the centroid in miles.


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