A watershed has the following characteristics:
A=2600 ac
L=5 mile
y=4%
The channel is lined with concrete
The watershed is a residential area with ¼-ac lots. The soil is categorized as soil group B. Assume that the average watershed slope is the same as the channel slope. Determine the UH for the area for a storm duration of 1 hr using the SCS triangular UH method.