COMPARISON OF SELECTED METHODS FOR PREDICTION OF LOW-FLOW IN YILDIZ RIVER BASIN, TURKEY

Abstract

In this study, low-flow frequency analyzes for Yildiz River Basin in the middle of Turkey with various predict methods. The study area was identified as measurement low-flow characteristics of the Yildiz River Basin in Kizihrmak Drainage Basin. Low-flow forecast methods are used with concurrent flows measurement at a continuous stream flow-gaging Station (SGS). Yildiz River Basin SGSs depend on the State Hydraulic Works (SHW). SHW is gaged daily average flow metric Q7,10 at each index and partial sites. Correlation methods are used to daily concurrent low-flow records at four index-partial sites for estimate to low-flow characteristics of partial-record sites. Error and bias are calculated with three methods such as Q-ratio, MOVE.1, and Base Flow Correlation. The Base Flow Correlation method has the lowest error and the least amount of bias for scenarios.