A groundwater basin with a surface area of 125 km2 has the following average ann

Posted: January 25th, 2023

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A groundwater basin with a surface area of 125 km2 has the following average annual measurements:
Precipitation (60.6 cm)
Evapotranspiration (46.3 cm)
Overland flow (3.4 cm)
Baseflow (10.6 cm)
There is no streamflow into the groundwater basin, and no groundwater flow either into or out of the basin.
a) Prepare a water budget for the groundwater basin, listing inputs such as recharge on one side and outputs on the other side. Report the inputs and outputs in units of billion gal/yr and acre-ft/yr.
b) Do the inputs balance the outputs?
c) If we included pumping wells at a total extraction rate of 20 MGD (million gallons per day), would this have a large effect on the water balance? Which component of the water balance do you think would be most affected?

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