SOIL EROSION MODELING USING RUSLE AND GIS ON THE IMHA WATERSHED

  • Kim, Hyeon-Sik (Graduate Student, Dept. of Civil Engineering, Engrg. Res. Ctr., Colorado State Univ.) ;
  • Julien Pierre Y. (Dept. of Civil Engineering, Engrg. Res. Ctr., Colorado State Univ.)
  • Published : 2006.01.01

Abstract

The Imha watershed is vulnerable to severe erosion due to the topographical characteristics such as mountainous steep slopes. Sediment inflow from upland area has also deteriorated the water quality and caused negative effects on the aquatic ecosystem of the Imha reservoir. The Imha reservoir was affected by sediment-laden density currents during the typhoon 'Maemi' in 2003. The RUSLE model was combined with GIS techniques to analyze the mean annual erosion losses and the soil losses caused by typhoon 'Maemi'. The model is used to evaluate the spatial distribution of soil loss rates under different land uses. The mean annual soil loss rate and soil losses caused by typhoon 'Maemi' were predicted as 3,450 tons/km2/year and 2,920 ton/km2/'Maemi', respectively. The sediment delivery ratio was determined to be about 25% from the mean annual soil loss rate and the surveyed sediment deposits in the Imha reservoir in 1997. The trap efficiency of the Imha reservoir was calculated using the methods of Julien, Brown, Brune, and Churchill and ranges from 96% to 99%.

Keywords

References

  1. Beasley, D.B. (1989), 'ANSWERS: a model for watershed planning.' Transactions of the ASAE, 23(4), pp. 938-944
  2. Boyce, R.C. (1975). 'Sediment routing with sediment delivery ratios'. In present and prospective technology for predicting sediment yields and sources, ARS-S-40, USDA-ARS
  3. Hickey, R., Smith, A., and Jankowski, P. (1994). 'Slope length calculations from a DEM within ARC/INFO GRID'. Computers, Environment, and Urban Systems, Vol. 18, No, 5, 365-380p https://doi.org/10.1016/0198-9715(94)90017-5
  4. Julien, P. Y. (1998). 'Erosion and sedimentation'. Cambridge University Press, Cambridge, New York. pp. 280
  5. Kim, H.S. (2006). 'Soil erosion modeling using RUSLE and GIS on the Imha watershed, South Korea', Master. thesis, Department of Civil Engineering, Colorado State University. pp. 55-57
  6. K.M.A (2003). Korea Meteorological Administration, http://www.kma.go.kr
  7. KOWACO (1997). 'Deposits survey report of Imha reservoir.' Korea Water Resources Corporation. Daejeon, South Korea
  8. KOWACO (2004). '임하댐 탁수저감방안 수립보고서', Korea Water Resources Corporation. Daejeon, South Korea. Pp. 68-95
  9. McCool, D.K., Brown, L.C. and Foster, G.R., (1987). 'Revised slope steepness factor for the Universal Soil Loss Equation'. Transactions of the American Society of Agricultural Engineers, 30: pp. 1387-1396
  10. McCool, D.K., Foster, G.R., and Weesies, G.A. (1997). 'Slope length and steepness factors (LS)', Chapter 4, pp. 101-141 in Renard et al. (1997)
  11. Mitasova, H., Hofierka, J., Zlocha, M., and Iverson, R. (1996) 'Modeling topographic potential for erosion and deposition using GIS.' Int.J. geographical information systems, 10(5), pp. 629-641
  12. MOCT and KOWACO. (2005). 'The Nakdong River Basin survey project. ', Volume( I )
  13. Molnar, D.K., and Julien, P.Y. (1998) 'Estimation of upland erosion using GIS.' Computers & Geosciences, 24(2) pp. 183-192 https://doi.org/10.1016/S0098-3004(97)00100-3
  14. NIAST, (2003) 'Determination of C factor based on Lysimeter experiments'. The National Institute of Agricultural Science and Technology, South Korea
  15. Renard, K.G., Foster, G.R., Weesies, G.A., McCool, D.K., and Yoder D.C. (1997). 'Predicting soil erosion by water: A guide to conservation planning with the Revised Universal Soil Loss Equation (RUSLE).' Agriculture Handbook No. 703. U.S. Department of Agriculture, Agricultural Research Service, Washington, District of Columbia, USA
  16. Renfro, G.W. (1975). 'Use of erosion equations and sediment delivery ratios for predicting sediment yield. In Present and Prospective technology for predicting sediment yields and sources, Agricultural Resources Services, ARS-S-40, pp. 33-45. US Dept. Agric., Washington, D.C.
  17. Roehl, J.W. (1962). 'Sediment yield as a function on upstream erosion. In Universal Soil Loss Equation: Past, Present and Future. SSSA Special Publication #8, Soil Science Society of America, Madison, Wisc
  18. Schwab, G.O., Frevert, R.K., Edminster, T.W., and Barnes, K.K. (1981). 'Soil Water Conservation Engineering (3rd ed.)', Wiley, New York
  19. Shin, G.J. (1999). 'The analysis of soil erosion analysis in watershed using GIS', Ph.D. Dissertation, Department of Civil Engineering, Gang-won National University
  20. T.R.C (2003). Typhoon Research Center, http://www.typhoon.or.kr
  21. Van Remortel, R., Hamilton, M., and Hickey, R. (2001). 'Estimating the LS factor for RUSLE through iterative slope length processing of DEM elevation data.' Cartography 30 (1), pp 27-35
  22. Vanoni, V.A. (1975). 'Sedimentation Engineering.' Manuals and reports on engineering practice-No. 54,. American Society of Civil Engineers, New York
  23. Weesies, G.A. (1998). 'Predicting soil erosion by water: A guide to conservation planning with the Revised Universal Soil Loss Equation (RUSLE).' Agriculture Handbook No. 703. Washington, District of Columbia, USA
  24. Williams, J.R. (1975). 'Sediment yield prediction with universal equation using runoff energy factor.' Agricultural Research Service report ARS-S-40. U.S. Department of Agriculture
  25. Williams, J.R. (1977). 'Sediment delivery ratios determined with sediment and runoff models. In: Erosion and solid matter transport in inland waters'. IAHS-AISH publication No. 122. pp168-179
  26. Wischmeier, W.H., Smith, D.D., and Uhland, R.E. (1958) 'Evaluation of factors in the soil loss equation'. Agric. Eng. 39: pp 458-462, 474
  27. Wischmeier, W.H. and Smith, D.D. (1965) 'Predicting rainfall erosion losses from cropland east of the Rocky Mountains: Guide for selection of practices for soil and water conservation.' U.S. Department of Agriculture Handbook No. 537