Abstract
The problem of estimation of the velocity parameter in the exponential distribution geomorphological instantaneous unit hydrograph (ED-GIUH) is investigated in this study. The main difficulty in applying the ED-GIUH model is the estimation of this parameter. In the present study, the ED-GIUH model is applied to six watersheds in Indiana, U.S.A. The relationships between the velocity parameter and climatic as well as basin geomorphologic parameters are investigated. The results of the study indicate that the velocity parameter is related to effective rainfall depth, total basin area and cumulative slope; it does not depend on runoff characteristics. Therefore, the ED-GIUH model can be used for estimating discharge hydrographs from ungauged watersheds.
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References
Allam, M. N. and Balkhair, K. S.: 1987, Case study evaluation of geomorphologic instantaneous unit hydrograph, Water Resour. Manage. 1, 267–297.
Al-Wagdany A. S. and Rao, A. R.: 1994, ‘Drainage Network Simulation Using Digital Elevation Models’, in I.V. Muralikrishna (ed.), Proceedings of International Conference on Remote Sensing and GIS, Tata MaGraw-Hill, India.
Bowden, K. L. and Wallis, J. R.: 1964, Effect of stream-ordering technique on Horton's laws of drainage composition, Geol. Soc. Amer. Bull. 75, 767–774.
Broscoe, A. J.: 1959, Quantitative analysis of longitudinal stream profiles of small watersheds, Proj. NR 389–042, Tech. Rep. 18. Dept Geology, Columbia University, New York.
Chow, V. T.: 1964, Handbook of Applied Hydrology, McGraw-Hill, New York.
Chow, V. T., Maidment, D. R. and Mays, L. W.: 1988, Applied Hydrology, McGraw-Hill, New York.
Diaze-Granados, M., Bras, R. L. and Valdes, J. B.: 1986, Incorporation of channel losses in the geomorphologic IUH, in Scale Problems in Hydrology, D. Reidel, Dordrecht, Holland, pp. 217– 243.
Gupta, V. K., Waymire, E. and Wang C. T.: 1980, A representation of an instantaneous unit hydrograph from geomorphology, Water Resour. Res. 16, 855–862.
Indiana Atlas of County Drainage Maps: 1959, Indiana Joint Highway Research Project, Engineering Bulletin, Extension Service No. 37.
Kirshen, D. M. and Bras, R. L.: 1983, The linear channel and its effect on the geomorphologic IUH, J. Hydrol. 65, 175–208.
Lee, M. T., Blank, D. and Delleur, J. W.: 1972, A program for estimating runoff from Indiana watersheds, Part II. Assembly of hydrologic and geomorphologic data for small watersheds in Indiana, Tech. Rep. No. 23, Purdue University Water Resources Research Center, Lafayette, Indiana.
Pilgrim, P. H.: 1977, Isochrones of travel time and distribution of flood storage from a tracer study on a small watershed, Water Resour. Res. 15, 1409–1420.
Rinaldo, A., Marani, A. and Rigon, R.: 1991, Geomorphological dispersion, Water Resour. Res. 27(4), 513–525.
Rodriguez-Iturbe, I. and Valdes, J. B.: 1979, The geomorphologic structure of hydrologic response, Water Resour. Res. 15(6), 1409–1420.
Rodriguez-Iturbe, I., Devoto, G. and Valdes, J. B.: 1979, Discharge response analysis and hydrologic similarity: The interaction between the geomorphologic IUH and stream characteristics, Water Resour. Res. 15(6), 1435–1444.
Shreve, R. L.: 1967, Infinite topologically random channel networks, J. Geol. 75, 17–37.
Strahler, A. N.: 1957, Quantitative analysis of watershed geomorphology, Trans. Am. Geophys. Union 38, 913–920.
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Al-Wagdany, A.S., Rao, A.R. Estimation of the Velocity Parameter of the Geomorphologic Instantaneous Unit Hydrograph. Water Resources Management 11, 1–16 (1997). https://doi.org/10.1023/A:1007923906214
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DOI: https://doi.org/10.1023/A:1007923906214