7 7 10 An 8 Mi Watershed Has A Time Of Concentration Of 1 0 H Calculate A 10 Minute Unit Hydrograph For This Watershed 1 (11.85 KiB) Viewed 38 times
7.7.10 An 8-mi² watershed has a time of concentration of 1.0 h. Calculate a 10-minute unit hydrograph for this watershed by the SCS triangular unit hydrograph method.
Determine the direct runoff hydrograph for a 20-minute storm having 0.6 in of excess rainfall in the first 10 minutes and 0.4 in in the second 10 minutes.
7.7.10 for the SCS synthetic unit hydrograph (figure 7.7.4a) using 8 mi2 and 1.25 hr time of concentration (not the textbook 1 hr time of concentration); the first step is to create the UH, the second is to apply it to the 20-minute storm
1.0 0.8 0.6 0.4 0.2 FIGURE 7.7.4 alap 2 1/Tp (a) 3 SIN F Excess rainfall 4p (h) Direct runoff 1.67T
Join a community of subject matter experts. Register for FREE to view solutions, replies, and use search function. Request answer by replying!