Large Basin Runoff Forecasting on Small Computers

by Thomas E. Croley, II, US Dep of Commerce, NOAA, Great, Lakes Environmental Research Lab, Ann Arbor, MI, USA,
Holly C. Hartmann, US Dep of Commerce, NOAA, Great, Lakes Environmental Research Lab, Ann Arbor, MI, USA,



Document Type: Proceeding Paper

Part of: Hydraulics and Hydrology in the Small Computer Age

Abstract: The Great Lakes Environmental Research Laboratory (GLERL) developed a semiautomatic software package for making deterministic outlooks of basin moisture storage conditions, basin runoff, net lake supplies, and lake levels six full months into the future for large lakes. The package was designed especially for use on small computers with a standard FORTRAN-77 compiler, 5 MB of disk storage, and a minimum of CPU and memory resources. The package incorporates the GLERL Large Basin Runoff Model (LBRM) applied to each of the 20 to 40 subbasins about a lake and combined to represent the entire basin. The near real-time data reduction system uses new algorithms to efficiently determine daily areal averages of meteorologic variables over each of the subbasins.

Subject Headings: Lakes | Basins | Runoff | Computer software | Data processing | Environmental issues | Moisture | Water storage

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