Drought Index Calculation for Irrigation Reservoirs

관개용 저수지의 한발지수산정

  • Published : 1995.12.01

Abstract

Drought index calculation based on the principal hydrological parameters, such as rainfall and reservoir storage, can estimate the duration and intensity of drought in irrigation reservoirs. It is difficult to build up a drought criteria since the conditions change variously by the reliability of rainfall. Because of the increasing water demands, it is urgent to prepare a generalized positive countermeasure to overcome drought. Water demands can at calculated but the estimation of drought characteristics, and the effective water management method can be established. The purpose of this study is to obtain a drought index and build up a data-base on the reservoir basins for establishing the fundamental hydrological data-base. This Index can observe the behavior of the WSI(Water Supply Index) and the component indices. The results summarized through this study are as follows. 1. WSI value of zero does not correspond to 100% in average due to the skewness in the probability distributions. 2. WSI is not a linear index; that is, given change in terms of water volume or percentage of average does not result in a proportional change on the WSI scale. 3. WSI is not always between the reservoir and the rainfall index in magnitude. This is only true if the component indices are of opposite sign. If they are of the same sign, the SWSI will often have a mangitude greater than either of the component indices. This is easily understood, because the concurrence of extreme values of the same sign for the two components is rarer than the occurrence of extreme values for either of the two components individually.

Keywords

References

  1. Water Sesour. Bulletin v.21 no.1 The palmer drought severity index as a measure of hydrologic drought Alley,W.M.
  2. Proc. Engrg. Hydro. Agriculture Responesto Hydrologic Drought, Colorado state University 3. Chang T.J. 1987 Drought analysis in the Ohio River Basin Biwell,V.J.
  3. Journal of Gkophysical research v.64 no.10 Water Deficits and Irrigation Requirements in the Southern United States C.H.M.van Bavel.
  4. 7th Conf. Appl. climatology Proc. American Meterological Society Drought monitoring in the western United States using a Surface Water Supply Index Doesken,N.J.;T.B.McKee;D.Garen
  5. Climatology Report Number 91-3 Development of a Surface Water Supply Index for the western United States Doesken,N.J.;T.B.McKee;J.Kleist
  6. Water Resources Research v.16 no.2 On the Definition of Droughts Dracup,J.A.;K.S.Lee;E.G.Paulson,J.R.
  7. J. Water Resour. Plng. Mgmt. v.118 no.6 Improved techniques in regression-based streamflow volume forcasting Garen,D.C.
  8. Drought Analysis and Soil Moisture Prediction v.109 no.2 Graeme M. Smart.
  9. Public Health Serivice W.P. 00457~01 Statistical Forecast of Drought National Science Foundation Gumble,E.J.
  10. Water Resour. Res. v.11 no.2 A stochastic analysis of extreme droughts Gupta,C.K.;Duckstein,L.
  11. The Colorado drought response plan. state of Colorado Lamm,R.D.
  12. Research Paper No. 45 Meteorological drought Palmer,W.C.
  13. 소유역의 한발지표 정립 v.1 no.2 김선주;여운식;이광야
  14. 한국농공학회지 v.13 no.1 한발기에 있어서 용수관리 방법이 수도생육과 그 수량에 미치는 영향에 관한 연구 김시원
  15. 한발은 있어도 한해는 없다 농업진흥
  16. 농업수자원 종합시스템 개발 농림수산부
  17. 수리시설물 관리의 문제점 및 개선방안연구 농림수산부
  18. 저수관리시스템개발 농림수산부
  19. 수자원 개발과 보존 대책 선우중호
  20. 대한토목학회지 v.27 no.3 한발과 홍수방지를 위한 항구대책 유태용
  21. 한국농공학회지 한발에 대비한 지하수개발의 제언 이천복
  22. 한국수문학회지 v.22 no.1 Nagative Runs 이론에 의한 한발의 연구동향 정상만
  23. 수자원장기종합계획보고서 한국수자원공사
  24. 한국농공학회지 월 강우자료에 의한 한발측정 황은;최덕구