Given: The 1 hour unit hydrograph of excess precipitation is described by the following data:
Time (hr) 0.0 1.0 2.0 3.0 4.0 5.0
Discharge Q (ft3/sec/in) 0 30 95 125 50 0
A storm produces the following pattern of excess precipitation:
1.7 in of excess precipitation during the first hour, followed by 0.8 in during the second hour
The solution I have says (30*0.8)+ (95*1.7)= 185.5
But shouldn't it be (30*1.7) + (95*0.8), I mean first hour Q shouldn't it correspond with first hour precipitation.
What am I missing here?
Time (hr) 0.0 1.0 2.0 3.0 4.0 5.0
Discharge Q (ft3/sec/in) 0 30 95 125 50 0
A storm produces the following pattern of excess precipitation:
1.7 in of excess precipitation during the first hour, followed by 0.8 in during the second hour
The solution I have says (30*0.8)+ (95*1.7)= 185.5
But shouldn't it be (30*1.7) + (95*0.8), I mean first hour Q shouldn't it correspond with first hour precipitation.
What am I missing here?