The city that relies on this river as a water source utilizes it at a per capita

Question

The city that relies on this river as a water source utilizes it at a per capita rate of 175 gallons/day. If the city has a population of 400,000 people, calculate the amount of water drawn from the river tor domestic use (in mgd) and the river flowrate downstream of the water treatment plant intake (in cfs). A bit downstream of the water treatment plant intake structure, the river flows through a vertical walled corridor similar to downtown Reno. This corridor reach is 0.75 miles long, 40 feet wide, and the water in this river section is 4.8 feet deep. Calculate the average velocity of in units of feet per second (fps), miles per hour (mph), and meters per second (m/s).

Explanation / Answer

70 mgd

108.3060045557 cfs

1596 m3/sec is flow rate.

40 ft = 12.19 meter

4.8 feet = 1.46 meter

area = 17.8 m2

speed in m/s = 89.6 m/s

300 feet/s

199 mph

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