Consider two reservoirs, A and B, connected in series with reservoir A situated upstream of reservoir B. The surface area of A is half of B. The area of B is 40 km². Both reservoirs A and B are subject to a total rainfall of 50 cm and evaporation of 30 cm on an annual basis. To preserve the ecological environment in the riparian zone along the water course, reservoir A is required to release a constant flow of 0.1 m³/s to reservoir B, whereas reservoir B releases 0.3 m³/s to its downstream channel. At the present time, the other than the in-stream flow requirement, there is no man-made structure withdrawing water from reservoir B. A small town of 50,000 is located near reservoir B. The per-capita water consumption is 400 liters per day. The town is contemplating to use reservoir B as a water supply reservoir. Solve for the followings: (a) Determine the annual water storage change of water in each of the two reservoirs if water is to be delivered from reservoir B to satisfy the water consumption stipulated above. (b) To maintain per-capita consumption as stipulated above, for how long reservoir B can supply water to the town? (c) If the annual water storage change in reservoir B cannot be negative, how much of the per-capita water consumption has to be adjusted?
Consider two reservoirs, A and B, connected in series with reservoir A situated upstream of reservoir B. The surface area of A is half of B. The area of B is 40 km². Both reservoirs A and B are subject to a total rainfall of 50 cm and evaporation of 30 cm on an annual basis. To preserve the ecological environment in the riparian zone along the water course, reservoir A is required to release a constant flow of 0.1 m³/s to reservoir B, whereas reservoir B releases 0.3 m³/s to its downstream channel. At the present time, the other than the in-stream flow requirement, there is no man-made structure withdrawing water from reservoir B. A small town of 50,000 is located near reservoir B. The per-capita water consumption is 400 liters per day. The town is contemplating to use reservoir B as a water supply reservoir. Solve for the followings: (a) Determine the annual water storage change of water in each of the two reservoirs if water is to be delivered from reservoir B to satisfy the water consumption stipulated above. (b) To maintain per-capita consumption as stipulated above, for how long reservoir B can supply water to the town? (c) If the annual water storage change in reservoir B cannot be negative, how much of the per-capita water consumption has to be adjusted?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:Consider two reservoirs, A and B, connected in series with reservoir A situated upstream of
reservoir B. The surface area of A is half of B. The area of B is 40 km². Both reservoirs A and B
are subject to a total rainfall of 50 cm and evaporation of 30 cm on an annual basis. To preserve
the ecological environment in the riparian zone along the water course, reservoir A is required to
release a constant flow of 0.1 m³/s to reservoir B, whereas reservoir B releases 0.3 m³/s to its
downstream channel. At the present time, the other than the in-stream flow requirement, there is
no man-made structure withdrawing water from reservoir B. A small town of 50,000 is located
near reservoir B. The per-capita water consumption is 400 liters per day. The town is
contemplating to use reservoir B as a water supply reservoir. Solve for the followings:
(a) Determine the annual water storage change of water in each of the two reservoirs if water
is to be delivered from reservoir B to satisfy the water consumption stipulated above.
(b) To maintain per-capita consumption as stipulated above, for how long reservoir B can
supply water to the town?
(c) If the annual water storage change in reservoir B cannot be negative, how much of the
per-capita water consumption has to be adjusted?
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