Overland Flow Hydrographs for SCS Type II Rainfall
Publication: Journal of Irrigation and Drainage Engineering
Volume 111, Issue 3
Abstract
A mathematical model, which is founded on the kinematic‐wave and Green‐Ampt equations, is presented for the conjunctive overland flow‐infiltration process. Within the context of this model, it is shown that overland flow resulting from a specified time distribution of rainfall intensity can be described in terms of only three physically‐based nondimensional parameters. In cases where a less precise geometric shape is adequate, overland flow hydrographs for the 24‐hr SCS‐Type II rainfall can be approximated by triangular hydrographs. It is possible to evaluate the elements of such a triangular hydrograph in terms of the three governing physically‐based parameters of the overland flow‐infiltration process without using a computer. A dimensionless standardized triangular hydrograph is proposed that predicts the peak discharge, the time of occurrence of the peak discharge, and the volume of runoff before and after the hydrograph peak.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Akan, A. O., and Yen, B. C., “Mathematical Model of Shallow Water Flow Over Porous Media,” Jornal of the Hydraulics Division, ASCE, Vol. 107, No. HY4, Apr., 1981, pp. 479–494.
2.
Akan, A. O., and Yen, B. C., “Effect of Time Distribution of Rainfall on Overland Runoff,” Proceedings of the Third International Conference on Urban Storm Drainage, IAHR and IAWPRC, Vol. 1, Goteborg, Sweden, 1984, pp. 193–202.
3.
Brakensiek, D. L., and Rawls, W. J., “An Infiltration Based Runoff Model for a Standardized 24‐hour Rainfall,” Transactions of the American Society of Agricultural Engineers, Vol. 25, No. 6, 1982, pp. 1607–1611.
4.
Engman, E. T., “Roughness Coefficients for Routing Surface Runnoff,” Proceedings on The Conference on Frontiers in Hydraulic Engineering, ASCE, 1983, pp. 560–565.
5.
“HEC‐1 Flood Hydrograph Package User's Manual,” U.S. Army Corps of Engineers, Hydrologic Engineering Center, Davis, Calif., 1973.
6.
Huber, W. C., Heaney, J. P., Medina, M. A., Peltz, W. A., Sheikh, H., and Smith, G. F., “Stormwater Management Model User's Manual Version II,” Environmental Protection Technology Series, EPA‐670/2‐75‐017, U.S. EPA, Mar., 1975.
7.
Mein, R. G., and Larson, C. L., “Modeling the Infiltration Component of the Rainfall‐Runoff Process,” Bulletin 43, Water Resources Research Center, University of Minnesota, Minneapolis, Minn., Sept., 1971.
8.
Rawls, W. J., and Brakensiek, D. L., “A Procedure to Predict Green and Ampt Infiltration Parameters,” Proceedings of the National Conference on Advances in Infiltration, American Society of Agricultural Engineers, 1983, pp. 102–112.
9.
Woolhiser, D. A., and Liggett, J. A., “Unsteady One‐Dimensional Flow Over a Plane—The Rising Hydrograph,” Water Resources Research, Vol. 3, No. 3, June, 1967, pp. 753–771.
10.
Yen, B. C., and Akan, A. O., “Effects of Soil Properties on Overland Flow and Infiltration,” Journal of Hydraulic Research, Vol. 21, No. 2, 1983, pp. 153–173.
11.
Yen, B. C., and Chow, V. T., “Design Hyetographs for Small Drainage Structures,” Journal of the Hydraulics Division, ASCE, Vol. 106, No. HY6, June, 1980, pp. 1055–1076.
Information & Authors
Information
Published In
Copyright
Copyright © 1985 ASCE.
History
Published online: Sep 1, 1985
Published in print: Sep 1985
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.