Temperature/Sediment Model for a Shallow Lake

by H. G. Stefan, Prof.; Dept. of Civ. and Mineral Engrg., St. Anthony Falls Hydr. Lab., Univ. of Minnesota, Minneapolis, Minn. 55455,
S. Dhamotharan, (M.ASCE), Manager; Hydrological Analysis, Morrison-Knudsen Co., Boise, Idaho 83729,
F. R. Schiebe, (M.ASCE), Research Hydr. Engr.; U.S. Dept. of Agri., Sci. and Education Administration, Southern Plains Watershed and Water Quality Lab., Durant, Okla. 74701,

Serial Information: Journal of the Environmental Engineering Division, 1982, Vol. 108, Issue 4, Pg. 750-765

Document Type: Journal Paper


The effects of turbid water inflow into a shallow reservoir (Lake Chicot, Ark.) are described, analyzed, and modeled. Relationships between turbidity, solar radiation reflection and solar radiation attenuation in the water are given for a reservoir with suspended sediment (clay) content up to 1,000 ppm. The stratification dynamics and the formation of underflows and overflows are illustrated using field data. A dynamic computer model (RESQUAL) for the prediction of stratification and water quality in a shallow reservoir is developed and described. Dynamic effects are simulated on a daily timescale and include mixing by wind and convection, inflow, and outflow. Predicted and measured distributions of temperature and suspended sediments are compared.

Subject Headings: Hydrologic models | Solar radiation | Suspended sediment | Reservoirs | Computer models | Temperature effects | Shallow water | Lakes

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