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On the Determination of the Flood Discharge of Rivers and of the Back Water Caused by Contractions
The determination of the floocl discharge of rivers from data long previously obtained, is not unfrequently required of the engineer. So long as the flow is confined within the river's banks, tho ascertainment of the discharge is easy, as the sections and slopes are generally tolerably well defined, and the usual laws of the movement of rnnning water apply with reasonable approximation. But when the river passes its banks and overflows the surrounding country, all such rules generally become useless. The obstructions caused by trees, bushes, houses, fences, crops, & c., hinder the flow and cause eddie s and cross currents. The varying directions of the currents in different parts of the stream, the bodies of dead water, the return currents flowing in some cases up stream, all combine to render utterly unreliable any attempt to ascertain the discharge by computation from the cross-sections ancl surface slope.
On the Determination of the Flood Discharge of Rivers and of the Back Water Caused by Contractions
The determination of the floocl discharge of rivers from data long previously obtained, is not unfrequently required of the engineer. So long as the flow is confined within the river's banks, tho ascertainment of the discharge is easy, as the sections and slopes are generally tolerably well defined, and the usual laws of the movement of rnnning water apply with reasonable approximation. But when the river passes its banks and overflows the surrounding country, all such rules generally become useless. The obstructions caused by trees, bushes, houses, fences, crops, & c., hinder the flow and cause eddie s and cross currents. The varying directions of the currents in different parts of the stream, the bodies of dead water, the return currents flowing in some cases up stream, all combine to render utterly unreliable any attempt to ascertain the discharge by computation from the cross-sections ancl surface slope.
On the Determination of the Flood Discharge of Rivers and of the Back Water Caused by Contractions
Hutton, William R. (author)
Transactions of the American Society of Civil Engineers ; 11 ; 211-227
2021-01-01
171882-01-01 pages
Article (Journal)
Electronic Resource
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