• Proceedings of the Korea Water Resources Association Conference
• /
• 2004.05b
• /
• pp.439-443
• /
• 2004

• Geotechnical Engineering
• /
• v.37 no.5
• /
• pp.25-36
• /
• 2021

• Geotechnical Engineering
• /
• v.37 no.6
• /
• pp.48-58
• /
• 2021

• KSCE Journal of Civil and Environmental Engineering Research
• /
• v.28 no.6B
• /
• pp.653-663
• /
• 2008

The purpose of this study is to establish a database of weather, hydrology, point source pollution management, reservoir release and tillage management for SWAT model evaluation of Anseongcheon watershed ($370.1km^2$, the upstream of Gongdo water level gauging station), and to use them for the following research of future climate and land use change impact on streamflow and stream water quality. It is expected that the database can achieve the practical analysis of current watershed hydrologic and environmental condition. The model calibration and validation were conducted using the constructed database. The model results showed that the tillage management affected the temporal shift of pollutant loads, and changed the flow pattern of pollutant transport through cultivation area. It was identified that the April and May irrigation water supply from the agricultural reservoir also affected the streamflow of downstream. The data application of pollutants treatment facilities and tillage management of cultivation area showed about 10% difference in the simulation results of stream water quality. The data establishment of agricultural reservoir operation, the tillage management of cultivated area within the watershed and the attributes inclusion of pollutants treatment facilities were proved to be important in SWAT model evaluation. The results of model setup in this study are expected for more reliable model application in the following research of future climate and land use change impact on hydrology and stream water quality of the study watershed.

• Proceedings of the Korea Water Resources Association Conference
• /
• 2006.05a
• /
• pp.1206-1210
• /
• 2006

본 연구에서는 천수방정식을 지배방정식으로 하고, 유한 체적법에 기반을 둔 FLUMEN 수치모형을 이용하여 홍수범람 모의를 수행하였다. 본 연구의 대상유역은 평택시 내에 있는 상수침수지역인 안성천과 통복천의 합류지점을 선정하였다. 대상유역에서 외수침수의 조건으로 범람이 되었을때와 도시유출(urban runoff)경계조건을 가미하여 내수침수로 인해 도시내 침수가 발생했을 시에 모의된 침수결과를 비교.검토하였다. 또한 도시유출로 인한 내수침수시에 도시내 배수펌프의 원활한 작동유무의 영향을 모의하였다. 모의된 결과를 살펴보면, 외수침수만을 고려하여 모의된 결과와 내수침수 조건을 가미한 모형의 결과는 도시내 침수면적과 침수심에서 확연한 차이가 나타남을 알 수 있었다. 또한 배수펌프의 유무에 따라 도시내의 침수심 부분에 있어서 많은 차이를 보임을 알 수 있었다. 본 모형의 결과는 향후 실제 지형에서의 홍수 피해를 예측하는 경우 하천 범람과 더불어 근래의 급격한 도시화에 따른 도시유출을 동시에 감안하여 그 피해를 최소화 할 수 있는 기초자료로 이용되어 질 수 있을 것으로 사료된다.

• 한국항공운항학회:학술대회논문집
• /
• 2005.05a
• /
• pp.124-127
• /
• 2005

• Proceedings of The Korean Society of Agricultural and Forest Meteorology Conference
• /
• 2001.06a
• /
• pp.22-25
• /
• 2001

인간의 개발활동으로 인하여 자연적인 토지피복 및 식생, 토지이용형태의 변화가 일어나고 그로 인하여 과거 1차 생산 중심의 농업지역들이 공업 및 상업이 가미된 도시지역으로 발전하면서 토양유실량의 변화를 포함한 여러 수문 환경이 변화하고, 환경문제로도 대두되고 있다.(중략)

• Journal of the Korean Association of Geographic Information Studies
• /
• v.9 no.4
• /
• pp.119-128
• /
• 2006

The purpose of this study is to prepare input data for FIA (flood inundation analysis) and FDA (flood damage assessment) through rainfall-runoff simulation by HEC-HMS model. For Jinwie watershed ($737.7km^2$), HEC-HMS was calibrated using 6 storm events. Geospatial data processors, HEC-GeoHMS is used for HEC-HMS input data. The parameters of rainfall loss rate and unit hydrograph are optimized from the observed data. The results will be used for river routing and inundation propagation analysis for various flood scenarios.

• Proceedings of the KSRS Conference
• /
• 2006.03a
• /
• pp.139-144
• /
• 2006

농촌지역 소하천 주변의 홍수범람지역을 추정하기 위하여 강우와 구름의 영향을 받지 않으며 홍수기간의 데이터 취득이 가능한 RADARSAT 영상을 이용하였다. 대상 지역인 안성천유역의 1998년 9월 홍수시기에 대해서 홍수 전, 직후 그리고 후, 세시기의 RADARSAT 영상을 사용하였다. 5m DEM을 이용하여 정사보정을 한 후 RGB 합성방법과 ratio 방법을 적용하여 성환천과 학성천 합류지점에서 침수지역을 발견하였다. 침수지역은 두개의 하천이 합류하는 지점에서 발생하였으며, 하천의 통수능력을 상실하여 범람한 것으로 분석되었다.

• The Journal of Engineering Geology
• /
• v.27 no.4
• /
• pp.383-392
• /
• 2017

Excessive abstraction of groundwater near streams for agricultural, domestic, or industrial use can significantly reduce the streamflow. Therefore, proper management of water resources must involve careful monitoring of groundwater use near streams. This study investigates the current status of groundwater intake plans in the Anseongcheon watershed, Korea, in order to understand the portion of groundwater wells according to distance from the stream and the distribution of wells near the stream. Among all the wells in the watershed, 20.5% were permitted and 31.3% were declared within 300m from the stream. In particular, among the wells located near streams, 11.4% were permitted and 88.6% were declared among the wells near streams. Therefore, the total amount of groundwater pumping rates from the declared wells is much higher than that from the permitted wells near the stream. Under current guidelines, investigations of the impact of groundwater use near a stream on streamflow depletion should only consider wells permitted by groundwater law. However, prudent management should also pay attention to declared wells, given their large number.