Accession Number : ADA300030

Title :   A Continuum Model for Streamflow Synthesis.

Descriptive Note : Final rept. 1 Nov 89-12 May 95,

Corporate Author : SOUTHERN UNIV BATON ROUGE LA

Personal Author(s) : Joseph, Erat S. ; Singh, Vijay P.

PDF Url : ADA300030

Report Date : 21 AUG 1995

Pagination or Media Count : 18

Abstract : In this study, three related areas were investigated with the objective of developing a continuum model for streamflow synthesis. The areas spanned surface runoff to subsurface unsaturated flow to flood-wave propagation to comparative assessment of different dynamic wave representations of the shallow water-wave theory. The surface runoff was modeled using discrete linear models for overland flow, and physically-based Muskingum methods for channel flow. Also developed was a theory of errors for a comparative evaluation of the kinematic, diffusion, and dynamic wave representations of the shallow water-wave theory. The unsaturated flow was modeled using a systems-based model for infiltration and soil moisture, and the kinematic-wave theory for movement of soil moisture. The infiltration model was a general one encompassing the popular models of Horton, Kostiakov, Overton, Green and Ampt, and Philip as special cases. The models developed in the project were verified using field data. In most cases, simplified models were found to be adequate.

Descriptors :   *MATHEMATICAL MODELS, *STREAMFLOW ANALYSIS, KINEMATICS, SPATIAL DISTRIBUTION, WATER WAVES, COMPARISON, HYDROLOGY, SHALLOW WATER, GROUND WATER, INFILTRATION(FLUIDS), APPROXIMATION(MATHEMATICS), ERROR ANALYSIS, SURFACE WATERS, PARTIAL DIFFERENTIAL EQUATIONS, WATERSHEDS, SOIL DYNAMICS, HYDRAULICS, VEGETATION, MOISTURE, HYDROGRAPHY, FLOODING, CIVIL ENGINEERING, CHANNEL FLOW, SUBSURFACE, RUNOFF, STEADY FLOW, BASE FLOW.

Subject Categories : Hydrology, Limnology and Potamology
      Civil Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE