Journal of The Korean Society of Agricultural Engineers (한국농공학회논문집)

The Korean Society of Agricultural Engineers (한국농공학회)
권호 표지
DOI QR코드

DOI QR Code

Estimation of Runoff Curve Number for Ungaged Watershed using SWAT Model

SWAT을 이용한 미계측 유역의 유출곡선지수 산정

  • Published : 2009.11.30
Download PDF
⟨ Previous Next ⟩

Abstract

This study is to suggest the SWAT model as inputs for the estimation of CN (Curve number) if we do not have hourly rainfall and runoff data in the ungaged watershed. The daily CNs were estimated by using SWAT model for Chungju dam watershed and the CNs by hourly rainfall and runoff data in the same period with daily CN estimation were also estimated. Then the daily and hourly CNs were compared each other. The CNs by SWAT model were larger than the actual CNs. 7.4% larger in AMC-I, 1.2% in AMC-II, and 6.3% in AMC-III respectively. If we consider various uncertainties in the estimation of CN, the error of 6.8% could be acceptable for the application in the field.

Keywords

References

  1. Arnold, J.G., Allen, P.M., and Bernhardt, G. 1993, "A comprehensive surface-groundwater flow model.", Journal of Hydrology 142: 47-69 https://doi.org/10.1016/0022-1694(93)90004-S
  2. Bae, D.H., B.J. Lee, and I.W. Jeong, 2003, Runoff Curve Number Estimation for Cover and Treatment Classification of Satellite Image(Ⅰ)-CN Estimation-, Journal of KWRA, 36(6): 985-997 (in Korean) https://doi.org/10.3741/JKWRA.2003.36.6.985
  3. Choi, J.Y., Engel, B.A. and Chung, H. W., 2002, "Daily streamflow modelling and assessment based on the curve-number technique." Hydrological Processes 16: 3131-3150 https://doi.org/10.1002/hyp.1092
  4. Kim, K.T., 1998, Analysis of Runoff Response Using GIS, Ph.D. diss., Inha University (in Korean)
  5. Kim, N.W., B.J. Lee and J. E. Lee, 2007, "Analysis of the characteristics of low-flow behavior based on spatial simulated flows.", KSCE Journal of Civil Engineering 27(4B): 431-440 (in Korean)
  6. Kim, N.W., and Lee, J. 2008, "Temporally weighted average curve number method for daily runoff simulation." Hydrological Processes, 22(25): 4936-4948 https://doi.org/10.1002/hyp.7116
  7. Lee, J.W., 2009, Estimation of Runoff Curve Number for Ungaged Watersheds, Ph.D. diss., Inha University (in Korean)
  8. Lim, K.J., 2007, SWAT slope computation module, http://www.envsys.co.kr/~swat/
  9. Ministry of Science and Technology, 2007, Analysis and modeling for surface water hydrological components, Korea Institute of Construction Technology (in Korean)
  10. Mishra, S.K., Pandey, R.P., and Jain, M.K., 2008, "A Rain Duration and Modified AMC-dependent SCS-CN Procedure for Long Duration Rainfall-runoff Events." Water resources management, 22(7): 861-876 https://doi.org/10.1007/s11269-007-9196-6
  11. Oh, K. D., Jun, B. H., Han, H. G., Jung, S.W., Cho, Y.H. and Park, S.Y., 2005, Curve Number for a Forested Mountainous Catchment, Journal of KWRA 38(8): 605-616 (in Korean) https://doi.org/10.3741/JKWRA.2005.38.8.605
  12. Park, C.H. C.S. Yoo, and J.H. Kim, 2005, Revised AMC for Application of SCS Method: 1. Review of SCS Method and Problems in Its Application. Journal of KWRA, 38(1): 955-962 (in Korean) https://doi.org/10.3741/JKWRA.2005.38.11.955
  13. Yoo, C.S. C.H. Park and J. H. Kim, 2005, Revised AMC for Application of SCS Method: 2. Revised AMC. Journal of KWRA, 38(11): 963-972 (in Korean) https://doi.org/10.3741/JKWRA.2005.38.11.955
  14. Yoon, T. H,. 1991, Validity of Runoff Curve Number Method for Estimating of Effective Rainfall. Science of Water, 24(2): 97-108 (in Korean)
  15. U.S. Department of Agriculture, Soil Conservation Service, 1972, SCS-National Engineering Handbook, Section 4: Hydrology, 548 pp.5.