A 2000 mi² drainage basin receives 20 in/year rainfall. The evapotranspiration (ET) loss for the area is 15 inches for the year. Assume that the change in storage and seepage to groundwater for the system are essentially zero. Estimate the average discharge (ft³/sec) of the river at the basin outlet. (1mi = 5280 feet, 1 ft = 12 inches, 1 year = 365 days)

A 2000 mi² drainage basin receives 20 in/year rainfall. The evapotranspiration (ET) loss for the area is 15 inches for the year. Assume that the change in storage and seepage to groundwater for the system are essentially zero. Estimate the average discharge (ft³/sec) of the river at the basin outlet. (1mi = 5280 feet, 1 ft = 12 inches, 1 year = 365 days)

Structural Analysis

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ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Unit Hydrograph

Hydrology is the science which deals with the study of water on the earth’s surface. The word Hydrograph is derived from the word hydro which means water. Hydrograph is basically a graph in which the discharge is plotted against the time interval at a specific point in a river or other channel. In a hydrograph, the discharge is plotted along the y-axis and time interval is plotted along the x-axis. Hydrograph is used to estimate the runoff. The variations in discharges with the change in time is shown by a hydrograph. It was revealed that the total discharge at an outlet increases with time by a kinematic wave model.

Question

A 2000 mi² drainage basin receives 20 in/year rainfall. The evapotranspiration (ET) loss for the
area is 15 inches for the year. Assume that the change in storage and seepage to groundwater for
the system are essentially zero. Estimate the average discharge (ft³/sec) of the river at the basin
outlet. (1mi = 5280 feet, 1 ft = 12 inches, 1 year = 365 days)

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