Engineering, 22.12.2021 16:40 coontcakes

9.4. An unconfined aquifer with a specific yield of 0.20 is used as a water supply for the ir- rigation of farm land. The recharge area of the aquifer is the same area as the irri- gated area. The recharge is limited to 76 mm (3.0 in.) per year. The saturated thick- ness of the aquifer is 15.2 m (50ft). How many years will the water supply last if 254 mm (10.0 in.) of water per year is pumped from the aquifer for irrigation

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9.4. An unconfined aquifer with a specific yield of 0.20 is used as a water supply for the ir- rigat...

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