| Title |
Evaluation and Comparison of Four Streamflow Record Extension Techniques for Namgang Dam Basin |
| Authors |
김경훈 ( Gyeong Hoon Kim ) ; 정강영 ( Kang Young Jung ) ; 윤종수 ( Jong Su Yoon ) ; 천세억 ( Se Uk Cheon ) |
| DOI |
https://doi.org/10.15681/KSWE.2014.30.1.060 |
| Keywords |
MOVE.1; MOVE.2; REG; RPN; Streamflow record extension technique; TMDLs |
| Abstract |
In this study, four methods for calculation of continuous daily flow was suggested using short-term or partial recording station of stream flow including missing data. Using these methods, standard flows at the outlet of unit/small basins for the management of total maximum daily loads (TMDLs) in Nam gang dam basin were estimated from full-period flow duration curve (FDC). Four methods of extension are described, and their properties are explored. The methods are regression (REG), regression plus noise (RPN), and maintenance of variance extension types 1 and 2 (MOVE.1, MOVE.2). In these methods, the continuous daily flow was calculated using extension equation based on correlation analysis, after conducting the correlation analysis between historic record of stream flow and long-term recording station (a base station). Finally the best optimal method was selected as the MOVE.2, and the standard flows in the abundant, ordinary, low and drought flow estimated from FDC was evaluated using MOVE.2 in unit/small basins. |