Question

After a 2 hour storm, a station downstream from a 45 mi2 drainage watershed records a...

After a 2 hour storm, a station downstream from a 45 mi2 drainage watershed records a peak discharge of 9400 cfs and a total runoff of 3300 acre-ft.

(a) what is the unit hydrograph peak discharge?

(b) what would be the peak runoff and design flood volume if a 2 hour storm dropped 2.5 inch net precipitation?

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The net precipitation (runoff) in a three-hour period was 0.6 inches. The direct runoff hydrograph that...
The net precipitation (runoff) in a three-hour period was 0.6 inches. The direct runoff hydrograph that resulted from this precipitation was in the form of a triangle with a time base of 21 hours and with a peak flow of 200 cfs that occurred 9 hours from the beginning of the runoff. (a) Sketch the direct runoff hydrograph. Be sure to label axes. (b) Determine the runoff volume (ft3) (c) Determine the drainage area (acres) (d) Sketch the unit hydrograph...
Rain fell over a 1490-acre watershed at a constant rate of 2.75 inches/hour from 9 to...
Rain fell over a 1490-acre watershed at a constant rate of 2.75 inches/hour from 9 to 11 AM. Stream flow data recorded each hour are reported below. Note that the stream flow declines in dry periods to a relatively constant lower limit of 100 cfs (ft3/s). (a) Separate the base flow from the hydrograph. (b) When did direct (i.e., storm) runoff begin and end? (c) Find Pe,, the depth of excess precipitation, in inches. (d) Derive the 2-hour unit hydrograph....
Part I. Indicate whether true or false (T or F). ____ Storm water detention ponds typically...
Part I. Indicate whether true or false (T or F). ____ Storm water detention ponds typically are designed to regulate the outflow peak rate at or below a single target value, such as the pre-development (pre-land use change) peak runoff rate for a specified return period event. Detention storage alters the peak but not the volume of the outflow hydrograph. _____ Typical rating curves for weirs are concave upward. Typical rating curves for orifices are concave downward. ____ A sediment...