Estimating Flow Conditions for River Models

by William J. Grenney, (M.ASCE), Asst. Prof. of Civ. and Environmental Engrg.; Utah State Univ., Logan, Utah,
David S. Bowles, (A.M.ASCE), Grad. Research Asst.; Utah Water Research Lab., Utah State Univ., Logan, Utah,

Serial Information: Journal of the Environmental Engineering Division, 1976, Vol. 102, Issue 4, Pg. 693-707

Document Type: Journal Paper


River water quality models are important management tools for assessing the impact of point and diffuse pollution loads on the chemical and biological characteristics of the water at various points in a river network. In a river basin, the magnitude of the flow at any point and time is a dominant characteristic affecting pollutant concentrations. Flows from headwaters, surface and subsurface lateral inflow, point loads, and diversions, are input as boundary conditions to water quality models so that the flow at any location on the river network can be computed. This paper describes a man-in-the-loop computer model developed to utilize available historical streamflow data and user judgement to estimate flow boundary conditions for a water quality model. Applications of the model include the efficient allocation of irrigation water, and performing mass balances on any conservative substance, such as salinity.

Subject Headings: Water quality | Water pollution | Computer models | Water flow | Salt water | Water conservation | River flow | Streamflow

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