What is the net change of the water storage

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Reference no: EM133675747

Questions

1. If during a week a pool with area 60.0 m2 loses 2.35 in. of water to evaporation; with 29 mm of rainfall, what is the net change of the water storage in the pool during this week?

The parking lot of Bawadi Mall has an area of 128 ac. It is partially landscaped to provide some areas of grass. Assume that an average of 63% of the water that falls on the parking lot will flow into a nearby drainage ditch, and the rest either evaporates or soaks into unpaved areas. If as summer thunderstorm drops 3.23 cm of rain, how many cubic feet of water will flow into the drainage ditch?

2. At a water elevation of 6391 ft, a Lake has a volume of 2,939,000 ac-ft, and a surface area of 48,100 ac. Annual inputs to the lake include 8.0 in. of direct precipitation, runoff from gauged streams of 150,000 ac-ft per year, and ungauged runoff and groundwater inflow of 37,000 ac-ft per year. Evaporation is 45 in. per year.

A. Make a water budget showing inputs, in ac-ft per year and outputs in ac-ft per year. Does the input balance the output?

B. Will the average lake level rise or fall from the 6391-ft elevation over the long term?

C. What would be the lake surface area when the inputs balance the outputs? (Assume that the volume of gauged and ungauged runoff and ground-water inflows remain constant with a change in lake surface area.)

D. What is the residence time for water in the Lake when the water surface is at 6391 ft?

Reference no: EM133675747

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