Report on River Bank Protection Study, Wapello, Iowa, 1975

(1975) Report on River Bank Protection Study, Wapello, Iowa, 1975. Natural Resources, Department of


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The study included investigation of seepage forces due to internal flowing groundwater. Seepage forces were initially considered to be a 1ikely cause of bank failure, but were found to be insignificant in causing a slide near Jackson Street which occurred during our study. The medium sand layer found beneath the clay zone may be exposed at one particularly deep point of the river channel. This layer had piezometric gradients of about .002, insufficient to cause quicksand conditions as water escapes vertically through the sand into the river. However, more adverse seepage pressures could be present under more extreme climatic and river level fluctuations. This possibility has been considered in preliminary design of the recommended project.

Item Type: Departmental Report
Keywords: Iowa Conservation Commission, River Bank, River Protection
Subjects: Natural resources and environment
Natural resources and environment > Ecology
Natural resources and environment > Water resources
ID Code: 48603
Deposited By: Margaret Barr
Deposited On: 16 Apr 2024 21:01
Last Modified: 16 Apr 2024 21:01