Assessment of Apprehensive Area of Non-Point Source Pollution Using Watershed Model Application in Juam Dam Watershed

Yi, Hye-Suk; Choi, Kwang soon; Chong, Suna; Lee, Seung-Jae; Yi, Hye-Suk; Choi, Kwang soon; Chong, Suna; Lee, Seung-Jae

doi:2015.37.10.551

The Korean text of this paper can be translated into multiple languages on the website of http://jksee.or.kr through Google Translator.

J Korean Soc Environ Eng > Volume 37(10); 2015 > Article

Original Paper

J Korean Soc Environ Eng 2015;37(10): 551-557. doi: https://doi.org/10.4491/KSEE.2015.37.10.551

주암댐 유역 비점오염부하량 우심지역 평가를 통한 오염물질 저감시설 최적 설치지점 선정 연구

이혜숙¹, 최광순¹, 정선아¹, 이승재²

¹한국수자원공사 K-water연구원
²한국수자원공사 댐･유역관리처

Assessment of Apprehensive Area of Non-Point Source Pollution Using Watershed Model Application in Juam Dam Watershed

Hye-Suk Yi¹, Kwang soon Choi¹, Suna Chong¹, Seung-Jae Lee²

¹K-water, K-water Institute
²K-water, Dam & Watershed Maintenance Department

Corresponding author

Hye-Suk Yi ,Tel: 042-870-7454, Fax: 042-870-7499, Email: yihs@kwater.or.kr

Received: September 24, 2015; Revised: October 6, 2015; Accepted: October 13, 2015. Published online: October 31, 2015.

ABSTRACT

This study analyzes potentially hazardous sub-watersheds from non-point source pollution areas using an HSPF model. The watershed of the Juam dam reservoir was divided into 29 sub-watersheds, and the flow, BOD, TN and TP concentration for the Juam dam watershed were evaluated from 2009 to 2012 using a watershed model, with a warming period from 2009 to 2010. The results of the watershed model agreed well with the flow and water quality field measurements. The calculated average non-point source loadings were BOD of 8.8 and 9.1 kg/day/km² in 2011 and 2012, respectively; TN of 9.7 and 10.1 kg/day/km² in 2011 and 2012, respectively; and TP of 0.30 and 0.33 kg/day/km² in 2011 and 2012, respectively. The non-point source loading of the Bonghwa stream watershed was calculated, and predominantly assessed upstream of the Boseong river. Additionally, the Miryeok, Jangpyeong, Yuleo, Guam, Seokgyo, Mundeok, Incheon, and Bongnae stream watersheds, with extensive agricultural areas, were assessed to be potentially hazardous areas in terms of non-point source management. In this study, HSPF model was applied in order to aid in the selection of non-point source reduction facilities for the Juam dam watershed, where they were evaluated as to whether they would be applicable for non-point source management.

Key Words: Juam Dam Watershed, HSPF Model, Non-Point Source, Non-Point Source Reduction, Watershed Management