River Temperature Variation with Freezing and Storage

by Charles C.S. Song, (M.ASCE), Assoc. Prof.; Dept. of Civ. and Mineral Engrg., St. Anthony Falls Hydr. Lab., Univ. of Minnesota, Minneapolis, Minn.,
Kim Sau Leung, Research Asst.; St. Anthony Falls Hydr. Lab., Univ. of Minnesota, Minneapolis, Minn.,


Serial Information: Journal of the Environmental Engineering Division, 1978, Vol. 104, Issue 5, Pg. 879-888


Document Type: Journal Paper

Abstract: Water temperature in the northern part of the United States is significantly affected by the freezing phenomenon. Because of the freezing constraint on the variability of water temperature, there is a good correlation between the mean value and the fluctuating component. The probability density curve of water temperature variation develops a sharp peak near the freezing point. A stochastic model using two independent variables, air temperature variation and the mean daily water temperature, is developed. It is also shown that the water temperature variability tends to decrease as a dimensionless reservoir storage capacity decreases.

Subject Headings: Temperature effects | Freezing | Water storage | Water temperature | Rivers and streams | Air temperature | Probability | Density currents | Correlation | North America | United States

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