3pt Perform a hydrologic budget on a 250 acre lake to determ

(3pt) Perform a hydrologic budget on a 250 acre lake to determine the expected evaporation? . Inflow is 1500 cfs . Outflow is 1450 cfs . Infiltration is 2 inch/month . Precipitation is 8.5 inches/month . Net increase in Storage is 0.4 ft/day. 2. Note: Assume that 1 month has 30 days.

Solution

Solution:-

Given

Area of lake = 250 Acre = 250 * 43560 =10.89 *10⁶ feet²

Inflow = 1500 cfs = 1500*86500/(10.89*10⁶) = 11.9 feet/day

Outflow = 1450 cfs = 1450 *86500/(10.89*10⁶) = 11.5 feet/day

Infiltration = 2 inch/month

Infiltration = 0.005 feet/day

Precipitation = 8.5 inch/month = 0.0236 feet/day

Change in storage (?S) = 0.4 ft/day

We know that

Evaporation(E ) = precipitation + inflow + infiltration – outflow + change in storage

E = 0.0236 + 11.9 + 0.005 – 11.5 + 0.4 = 0.828 feet/day

Evaporation(E ) = 0.828 feet/day   Answer