Impoundment and Temperature Effects on Waste Assimilation

by Peter A. Krenkel,
Edward L. Thackston,
Frank L. Parker,

Serial Information: Journal of the Sanitary Engineering Division, 1969, Vol. 95, Issue 1, Pg. 37-64

Document Type: Journal Paper


The waste assimilative capacity of streams can be greatly affected by changes in temperature and hydraulic regime caused by impoundment. The increase in depth and decrease in mixing reduce atmospheric oxygenation but provide a more favorable environment for photosynthetic oxygenation. While surface layers remain well aerated, benthal demands and sedimentation of organic material may deoxygenate the lower waters. This effect is accentuated by thermal stratification. The effect of impoundment on all phases of the oxygen balance is considered. References and case studies show that the net effect can be a greatly reduced capacity for waste assimilation.

Subject Headings: Oxygen | Water storage | Temperature effects | Waste management | Case studies | Rivers and streams | Hydraulics | Wells (water)

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