Development of a Cell-based model to derive direct runoff hydrographs for ungauged mountainous basins
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A model to derive direct runoff hydrograph for an ungauged basin using the physical properties of the basin is presented. The basin is divided into grid cells and canal elements. Overland flow is generated from each grid cell of the basin by application of continuous effective rainfall of 1 mm/hr to the basin. The flow generated is routed through downstream grid cells and the canal elements using the kinematic wave approach. The travel time for direct runoff from each grid cell to the basin outlet is calculated and the S-curve is derived for the basin. The S-curve is used to derive the unit hydrograph of a given duration for the basin.
The model, referred as Cell-basin model was applied to the Upper Kotmale Basin in Sri Lanka and the model predictions of direct runoff hydrographs for rainfall events agreed with the observations to a reasonable accuracy. Comparison of the unit hydrographs obtained from the model and from the conventional Snyder’s synthetic unit hydrograph using regionalized parameters assuming the basin as an ungauged basin, with the unit hydrograph derived from the observations showed that the model predicted unit hydrograph was more suitable than that obtained by Snyder’s method for Sri Lankan up country basins. Thus, the present model is a useful tool to obtain direct runoff hydrograph for ungauged basins.
KeywordsUngauged basin GIS unit hydrograph mountainous basin direct runoff hydrograph model cell-based model cell-basin model
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- Ao Tianq, Junichi Yoshitani, Kuniyoshi Takeuchi, Kazuhiko Fukami, Tadashi Mutsuura and Hiroshi Ishidaira. 2003. Toward the Application of the Physically Based Distributed Hydrological Model BTOPMC to Ungauged Basins. Proc. of the Kick-off workshop on IAHS Decade of Prediction in Ungauged Basins (PUB). University of Brasilia, Brazil. 〈URL:http://www.cig.ensmp.fr/:_iahs/PUBs/Brasilia-Papers/Ao.pdf〉Google Scholar
- Callede J. 2003. PUB, Exception or Generality?. Proc. of the Kick-off workshop on IAHS Decade of Prediction in Ungauged Basins (PUB). University of Brasilia, Brazil. 〈URL:http://www.cig.ensmp.fr/:_iahs/PUBs/Brasilia-Papers/called.pdf〉Google Scholar
- Carlbro International. 2005. Evalution of availability of water resources, Nuwara Eliya district group water supply project. National Water Supply and Dainage Board, Sri Lanka, Pp.26.Google Scholar
- Chow V. T., Maidment, D. R., and Mays, L. W. 1988. Applied Hydrology, McGrew-Hill Book Company, New York: Pp 155–162.Google Scholar
- Connecticut, 2001. ConnDOT Drainage Manual. State of Connecticut, Department of Transportation, Pp.7-4-8–7-4-9.Google Scholar
- Dharmasena G. T. 1998. Hydrology of Small Catchments. Hydrology Division, Department of Irrigation, Sri Lanka, Pp.22–23.Google Scholar
- Dominic Mazvimavi. 2003. Estimation of Flow Characteristics of Ungauged Catchments: Case Study in Zimbabwe. PhD thesis, Wageningen University, Netherlands.Google Scholar
- Gangodagamage C., Biradar C. M., Islam A., and Thenkabail P. S. 2004. Shuttle radar topology mission (SRTM) data for Sri Lanka: Potential contributions in river basin research. Proc. of the First National Symposium on Geo-informatics. University of Peradeniya, Sri Lanka. Pp 19–30.Google Scholar
- Hapuarachchige P. H, Anthony S. Kiem, Kuniyoshi Takeuchi, Ao Tianqi, Jun Magome, and Maichun Zhou. 2004. Applicability of the BTOPMC Model for Predictions in Ungauged Basins. Proc. of the International Conference on Sustainable Water Resources Management in Changing Environment of the Monsoon Region, Colombo, Sri Lanka. Pp.378–388.Google Scholar
- Hunukumbura J.M.P.B. 2006. Setting up of an experimental basin and development of a cell-based model to derive direct runoff hydrographs for ungauged basins, MPhil thesis, Dept. of Civil Engineering, University of Peradeniya, Sri Lanka. Pp.135.Google Scholar
- Hunukumbura P.B. and S. B. Weerakoon. 2006. Direct Runoff Hydrograph for Ungauged Basin, HS11-Predictions in Ungauged Basins, Proc. 3 rd Asia Oceania Geoscience Meeting, Singapore. Pp.101–111.Google Scholar
- Jenson S. K., and Domingue J. O. 1988. Extracting Topographic Structure from Digital Elevation Data for Geographic Information System Analysis. Photogrammetric Engineering and Remote Sensing 54(11) 1593–1600.Google Scholar
- Mapa R. B., Somasiri S., and Nagarajah S. 1999. Soils of the Wet Zone of Sri Lanka. Soil Science Society of Sri Lanka,.Special Publication No 1: Pp.14–160.Google Scholar
- Nurunnisa Usul and Musa Yilmaz 2002. Estimation of Instantaneous Unit Hydrograph with Clark’s Technique in GIS. Proc. of the 22 nd Annual ESRI International User Conference. Pp. 42–60.Google Scholar
- Sivapalan M., Takeuchi K., Franks S. W., Gupta V. K., Karambiri H., Lakshmi V., Liang X., Mcdonnell J. J., Mendiondo E. M., O’connell P. E., Oki T., Pomeroy J. W., Schertzer D., Uhlenbrook S. and Zehe E., 2003. IAHS decade on predictions in ungauged basins (PUB), 2003–2012: Shaping an exciting future for the hydrological sciences, Journal of Hydrological Sciences 48(6): 857–880.CrossRefGoogle Scholar
- Shadrack, M. 2002. Estimation of Stream Flow of Ungauged Catchments for River Basin Management. Proc. of the 3 rd WaterNet/Warfsa Symposium’ Water Demand Management for Sustainable Development. Dar es Salaam. Pp. 125–132.Google Scholar
- USDA 1986. Urban Hydrology for Small Watersheds-TR-55. Natural Resources Conservation Service, Conservation, Engineering Division, United States Department of Agriculture, USA.Google Scholar