Optimal Stream Gauge Network Design Using Entropy Theory and Importance of Stream Gauge Stations

Stream gauge stations are facilities for measuring stream water levels and flow rates, and their main purpose is to produce the data required to analyze hydrological phenomena. However, there are no specific criteria for selecting the locations and installation densities of stream gauge stations, wh...

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Bibliographic Details
Published in:Entropy (Basel, Switzerland) Switzerland), 2019-10, Vol.21 (10), p.991
Main Authors: Joo, Hongjun, Lee, Jiho, Jun, Hwandon, Kim, Kyungtak, Hong, Seungjin, Kim, Jungwook, Kim, Hung Soo
Format: Article
Language:English
Subjects:
Correlation analysis
Creeks & streams
Discharge measurement
Entropy
euclidean distance
Euclidean geometry
Flood control
Flow velocity
Gauges
Geographic information systems
Hydrology
Information theory
Mathematical analysis
Network design
Parameter estimation
Principal components analysis
Rainfall
Random variables
Regression analysis
Runoff
station rating
Stations
stream gauge network
Water levels
Water quality
Water use
Watersheds
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Summary:Stream gauge stations are facilities for measuring stream water levels and flow rates, and their main purpose is to produce the data required to analyze hydrological phenomena. However, there are no specific criteria for selecting the locations and installation densities of stream gauge stations, which results in numerous problems, including regional imbalances and overlapping. To address these issues, a stream gauge network was constructed in this study considering both the transinformation of entropy (objective function 1) and the importance of each stream gauge station (objective function 2). To account for both factors, the optimal combinations that satisfied the two objective functions were determined using the Euclidean distance. Based on the rainfall runoff analysis results, unit hydrographs reflecting stream connectivity were derived and applied to entropy theory. The importance of each stream gauge station was calculated considering its purposes, such as flood control, water use, and environment. When this method was applied to the Namgang Dam Basin, it was found out that eight out of 12 stream gauge stations were required. The combination of the selected stations reflected both the transinformation of entropy and the importance of each station.
ISSN:1099-4300
1099-4300
DOI:10.3390/e21100991