Simulation of Ground-Water Flow in Steep Basin with Shallow Surface Soil
Publication: Journal of Hydraulic Engineering
Volume 126, Issue 9
Abstract
A coupled ground-water/channel flow distributed model has been developed for continuous simulation in a 123-km2 basin. The aim was to analyze the streamflow generation processes in natural vegetated environments. Finite-difference schemes have been used to solve conservation equations of the 2D saturated subsurface flow and the 1D kinematic surface flow. Because of the high hydraulic conductivity of the surface soil, only the saturation excess mechanism of runoff production has been considered. Parameter sensitivity analysis showed the overriding influence of soil storage capacity and conductivity. A grid discretization >100 m produces a hydraulic conductivity greater than physically meaningful, which considerably increases as the space-grid step increases. Results indicate that the model can satisfactorily simulate the water-flow behavior of the catchment after fitting the three parameters of surface hydraulic conductivity, effective porosity, and evapotranspiration losses. These are done after calculating the conductivity as a function of the height of the water table. The simulation efficiency has varied from 87% in the first 5-year calibration period to 85.8% in the subsequent 5-year validation period.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Abbott, M. B. (1992). Computational hydrualics, Ashgate Publishing Co., Brookfield, Vt.
2.
Bathurst, J. C. ( 1993). “Flow resistance through the channel network.” Channel network hydrology, K. Beven and M. J. Kirkby, eds., Wiley, New York, 69–98.
3.
Betson, R. S. (1964). “What is watershed runoff?” J. Geophys. Res., 69(8), 1541–1552.
4.
Beven, K., and Wood, F. ( 1993). “Flow routing and the hydrological response of channel network.” Channel network hydrology, K. Beven and M. J. Kirkby, eds., Wiley, New York, 99–128.
5.
Bras, R. L. (1990). Hydrology: An introduction to hydrologic science, Addison-Wesley, New York.
6.
Chow, V. T., Maidment, D. R., and Mays, L. W. ( 1988). “Surface water.” Chapter 5, Applied hydrology, McGraw-Hill, New York.
7.
Dunne, T. ( 1978). “Field studies of hillslope flow processes.” Hillslope hydrology, M. J. Kirkby, ed., Wiley, New York, 227–293.
8.
Dunne, T., and Black, R. D. (1970). “An experimental investigation of runoff production in permeable soils.” Water Resour. Res., 6(2), 478–490.
9.
Franchini, M., and Pacciani, M. (1991). “Comparative analysis of several conceptual rainfall-runoff models.” J. Hydro., Amsterdam, 122, 161–219.
10.
Fread, D. L. ( 1993). “Flow routing.” Chapter 10, Handbook of hydrology, D. R. Maidment, ed., McGraw-Hill, New York.
11.
Grayson, R. B., Moore, I. D., and McMahon, T. A. (1992). “Physically based hydrologic modeling 1. A terrain-based model for investigative purposes.” Water Resour. Res., 28(10), 2639–2658.
12.
Lee, M. T., and Delleur, J. W. (1976). “A variable source area model of the rainfall-runoff process based on the watershed stream network.” Water Resour. Res., 12(5), 1029–1036.
13.
McDonnel, J. J. (1990). “A rationale for old water discharge through macropores in a steep, humid catchment.” Water Resour. Res., 26(11), 2821–2832.
14.
Montgomery, D. R., and Dietrich, W. E. (1995). “Hydrologic processes in a low-gradient source area.” Water Resour. Res., 31(1), 1–10.
15.
Moore, I. D., and Burch, G. J. (1986). “Sediment transport capacity of sheet and rill flow: Application of unit stream power theory.” Water Resour. Res., 22(8), 1350–1360.
16.
Moore, I. D., and Grayson, R. B. (1991). “Terrain-based catchment partitioning and runoff prediction using vector elevation data.” Water Resour. Res., 27(6), 1177–1191.
17.
Mosley, M. P. (1979). “Streamflow generation in a forested watershed, New Zealand.” Water Resour. Res., 15(4), 795–806.
18.
Niedda, M. ( 1996). “Use of network algorithms in spatially distributed models for the study of river basin response.” IAHS, Publ.No. 235, International Association of Hydrological Sciences, Wallingford, U.K., 207–214.
19.
Niedda, M., and Sechi, G. M. (1996). “Mixed optimization technique for large-scale water-resource systems.”J. Water Resour. Plng. and Mgmt., ASCE, 122(6), 387–393.
20.
Paniconi, C., and Wood, E. F. (1993). “A detailed model for simulation of catchment scale subsurface hydrologic processes.” Water Resour. Res., 29(6), 1601–1620.
21.
Pearce, A. J. (1990). “Streamflow generation processes: An austral view.” Water Resour. Res., 26(12), 3037–3047.
22.
Pilgrim, D. H. (1976). “Travel times and nonlinearity of flood runoff from tracer measurements on a small watershed.” Water Resour. Res., 12(3), 487–496.
23.
Ragan, R. M. ( 1967). “An experimental investigation of partial area contributions.” Hydrological aspects of the utilization of water, IAHSPubl. No. 76, International Association of Hydrological Sciences, Wallingford, U.K., 241–251.
24.
Rao, A. R., and Al-Wagdany, A. (1995). “Effects of climatic change in Wabash river basin.”J. Irrig. and Drain. Engrg., ASCE, 121(2), 207–215.
25.
Rawls, W. J., Ahuja, L. R., Brakensiek, D. L., and Shirmohammadi, A. ( 1993). “Infiltration and soil water movement.” Handbook of hydrology, Chapter 5, D. R. Maidment, ed., McGraw-Hill, New York.
26.
Weiyan, T. (1992). Shallow water hydrodynamics, Elsevier Oceanography Series, Amsterdam.
Information & Authors
Information
Published In
History
Received: Nov 17, 1998
Published online: Sep 1, 2000
Published in print: Sep 2000
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.