Question

Calculate and plot the 1-hr Snyder/gamma unit hydrograph for a 60 mi2 basin that has a total basin length of 10.9 mi and a length to the basin centroid of 6.5 mi. Assume Ct = 2.15 and Cp = 0.62.

Repeat problem 1 but change the basin area to 120 mi2 . On the same graph, plot the new unit hydrograph with the unit hydrograph from problem 1. How do the unit hydrographs differ? Why is this difference observed?

Answer 1