Rational Hydrograph Method for Small Urban Watersheds
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Volume 6, Issue 4
Abstract
In this study, the rational method is expanded into the rational hydrograph method in which the time of concentration is considered as the system memory and the contributing rainfall depth to the present runoff rate is defined as the accumulated precipitation over the past up to the time of concentration. In doing so, the complete runoff hydrograph can be generated under a continuous nonuniform hyetograph. When the continuous hyetograph is uniform in time, the rational hydrograph method is reduced to the rational method. Using the moving average formulas developed in this study, the event-averaged time of concentration and runoff coefficient can be derived by the least-square method. A new formula for estimating the time of concentration was derived from 25 rainfall/runoff events observed in four urban watersheds. This approach was tested by laboratory observations, and rainfall/runoff events recorded from small watersheds in states of Maryland and Colorado.
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References
1.
Chow, V. T. ( 1964). Handbook of applied hydrology, McGraw-Hill, New York.
2.
Guo, J. C. Y. ( 1998). “Overland flow on a pervious surface.” Int. J. Water, 23(2), 91–95.
3.
Guo, J. C. Y. ( 2000a). “A semivirtual watershed model by neural networks.” J. Comp.-Aided Civ. and Infrastruct. Engrg., 15, 439–444.
4.
Guo, J. C. Y. ( 2000b). “Storm hydrographs from small urban catchments.” Int. J. Water, 3(Sept.).
5.
HEC-1 flood hydrograph package. (1985). Hydrologic Engineering Center, U.S. Army Corps of Engineers, Davis, Calif.
6.
Kirpich, Z. P. ( 1940). “Time of concentration for small agricultural watersheds.” Civ. Engrg., ASCE, 10(6), 362.
7.
Kuichling, E. ( 1889). “The relation between rainfall and the discharge of sewers in populous districts.” Trans., ASCE, 20, 1–56.
8.
McCuen, R. ( 1982). A guide to hydrologic analysis using SCS methods, Prentice-Hall, Englewood Cliffs, N.J.
9.
McCuen, R. H., Wong, S. L., and Rawls, W. J. (1984). “Estimating urban time of concentration.”J. Hydr. Engrg., ASCE, 110(7), 887–904.
10.
McPherson, M. B. ( 1968). Urban water resources research, ASCE Task Committee, ASCE Urban Hydrology Research Council, New York.
11.
Morgali, J. R. (1970). “Laminar and turbulent overland flow hydrographs.”J. Hydr. Engrg., ASCE, 96(2), 441–360.
12.
Urban storm water design criteria manual, Vol. 1, Colorado Urban Hydrograph Procedures, Urban Drainage and Flood Control District, Denver.
13.
USGS Open File Rep. 82-873, U.S. Geological Survey, Lakewood, Colo.
14.
Schaake, J. C. ( 1965). “Synthesis of the inlet hydrograph.” Tech. Rep. No. 3, John Hopkins Storm Drainage Research Project, Baltimore, Md.
15.
Singh, V. P. ( 1982). Hydrologic systems: Rainfall-runoff modeling, Vol. I, Prentice-Hall, Englewood Cliffs, N.J.
16.
Singh, V. P., and Cruise, J. F. ( 1992). “Analysis of the rational formula using a system approach.” Catchment runoff and rational formula, B. C. Yen, ed., Water Resources Publication, Littleton, Colo., 39–51.
17.
Song, Z., and James, L. D. ( 1992). “An objective test for hydrologic scale.” Water Resour. Bull., 28(5), 833–844.
18.
Wooding, R. A. ( 1965). “A hydraulic model for a catchment-stream problem.” J. Hydro., Amsterdam Issue #3, 254–267.
19.
Yen, B. C., and Chow, V. T. ( 1974). “Experimental investigation of watershed surface runoff.” Hydr. Engrg. Ser. No. 29, Dept. of Civ. Engrg., Univ. of Illinois at Urbana-Champaign, Ill.
20.
Yu, Y. S., and McNown, R. K. (1965). “Runoff from impervious surfaces.”J. Hydr. Res., 2(1), 3–24.
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Published In
Journal of Hydrologic Engineering
Volume 6 • Issue 4 • August 2001
Pages: 352 - 356
History
Received: Apr 20, 1998
Published online: Aug 1, 2001
Published in print: Aug 2001
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