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  1 - Regional Flood Frequency Analysis in Basin of Golestan River
  Alireza Alireza Abbas Mehrafroz
  The equiton and models presented in this research are considered toestimate peak discharge in non-hydrometric stream gauging station indrainage basin of Golestan River. Thus, following examing the allhydrometric stream- gauging stations, 3 stations have been selected wh More

  The equiton and models presented in this research are considered toestimate peak discharge in non-hydrometric stream gauging station indrainage basin of Golestan River. Thus, following examing the allhydrometric stream- gauging stations, 3 stations have been selected whichhave essential condition for regional analyses. Then between amounts ofdischarge with different return period in the mentioned station andeffective elements on flood in their upstream have been presented,relations and models using simple multiple regression method andlogarithmic, selection that can be used for obtaining the amounts ofdischarge whith different retarn period (Qti) in sub-basins not havingstation or any other place. Studing the suggested models show that amongother effective factors on flood, 3 factor of area (A), average of maximumdaily rainfall (P24), and the percentage of area covered by forest (FVA),have more meaningfull impact on amounts of peak discharge incomparative other factors, in addition, coefficient of multiple determine ofall models is about 1 and shows nearly 100% of (QTi) determined by 3above variables. Manuscript profile