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Water 2016, 8(4), 111; doi:10.3390/w8040111

The Impact of Impervious Surface on Water Quality and Its Threshold in Korea

1
Institute of Green Bio Science and Technology, Seoul National University, Gangwon 25354, Korea
2
Water Quality Assessment Research Division, National Institute of Environmental Research, Incheon 22689, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Andreas N. Angelakis
Received: 1 February 2016 / Revised: 16 March 2016 / Accepted: 17 March 2016 / Published: 23 March 2016
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Abstract

The change in the impervious-pervious balance has significantly altered the stream water quality, and thus the threshold of the impervious surface area in the watershed has been an active research topic for many years. The objective of this study is to verify the correlation between impervious surfaces and water quality and to determine the threshold of the percentage of the impervious surface area (PISA) for diagnosing the severity of future stream water quality problems in the watershed as well as regulating the PISA in Korea. Statistical results indicated that the PISA is a suitable indicator of water quality at the watershed scale and can illustrate the water quality problems caused by the impervious surface. In addition, the results from this study suggest that controlling the PISA within about 10% in watersheds is a fundamental strategy to mitigate the degradation of water quality. View Full-Text
Keywords: Han River Basin; impervious surface area; receiver-operating characteristic analysis; urbanization; Youden index Han River Basin; impervious surface area; receiver-operating characteristic analysis; urbanization; Youden index
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. (CC BY 4.0).

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MDPI and ACS Style

Kim, H.; Jeong, H.; Jeon, J.; Bae, S. The Impact of Impervious Surface on Water Quality and Its Threshold in Korea. Water 2016, 8, 111.

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