WMS:Universal Rational Hydrograph

From XMS Wiki
Revision as of 23:16, 7 March 2013 by Jcreer (talk | contribs)
Jump to navigationJump to search

The Universal Rational Hydrograph uses a set of coefficients and the peak discharge to compute the hydrograph ordinates at different times. The coefficients are shown in the following table and the resulting hydrograph is displayed.

Dimensionless Time and Hydrograph Ordinates
/ /
0 0.00
1 0.21
2 0.30
3 1.00
4 0.54
5 0.39
6 0.25
7 0.18
8 0.15
9 0.14
10 0.13
11 0.00


Notice that the peak occurs at .

File:WMSImage81.gif

where:

  • = time of concentration.
  • = Flow at time , in cfs.
  • = Peak flow.

Related Topics: