Question

20 cusecs of water added to vertical wall reservoir having surface area of 800 Acres. How many hours will it take to raise water level by 1 ft?

Answer 1

484 hours

Step-by-step explanation:

The given quantity of water will be added in a time period equal to the quantity divided by the rate.

(800 ac·ft)(43560 ft²/ac)/(20 ft³/s × 3600 s/h) = 484 h

It will take 484 hours to raise the water level by 1 ft.

__

Additional comment

We have assumed the given rate is a net rate of water influx. Evaporation from 800 acres may amount to about 1.3 ft³/s, or 6.6% of the inflow rate. It could be more than 3 times that amount, depending on the climate conditions at the reservoir's location.