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Mathematical Problems in Engineering
Volume 2014 (2014), Article ID 659262, 9 pages
http://dx.doi.org/10.1155/2014/659262
Research Article

Real-Time Analysis and Forecasting of Multisite River Flow Using a Distributed Hydrological Model

Department of Civil Engineering, Kyungpook National University, Daegu 702701, Republic of Korea

Received 8 July 2014; Accepted 18 August 2014; Published 18 December 2014

Academic Editor: Yoshinori Hayafuji

Copyright © 2014 Mingdong Sun and Gwangseob Kim. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A spatial distributed hydrological forecasting system was developed to promote the analysis of river flow dynamic state in a large basin. The research presented the real-time analysis and forecasting of multisite river flow in the Nakdong River Basin using a distributed hydrological model with radar rainfall forecast data. A real-time calibration algorithm of hydrological distributed model was proposed to investigate the particular relationship between the water storage and basin discharge. Demonstrate the approach of simulating multisite river flow using a distributed hydrological model couple with real-time calibration and forecasting of multisite river flow with radar rainfall forecasts data. The hydrographs and results exhibit that calibrated flow simulations are very approximate to the flow observation at all sites and the accuracy of forecasting flow is gradually decreased with lead times extending from 1 hr to 3 hrs. The flow forecasts are lower than the flow observation which is likely caused by the low estimation of radar rainfall forecasts. The research has well demonstrated that the distributed hydrological model is readily applicable for multisite real-time river flow analysis and forecasting in a large basin.