Econ. Environ. Geol. 2004; 37(5): 499-508

Published online October 31, 2004

© THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY

A Study on Groundwater Flow Modeling in the Fluvial Aquifer Adjacent to the Nakdong River, Book-Myeon Area, Changwon City

Se-Yeong Hamm1*, Jae-Yeol Cheong1, Hyoung-Su Kim2, Jeong-Sang Hahn3 and Su-Hee Ryu1

1Dept. of Geology, Pusan National University, Pusan 609-735, Korea
2Korea Institute of Water and Environment, Korea Water Resources Corporation, Daejeon 306-711, Korea
3Dept. of Earth System Sciences, Yonsei University, Seoul 120-749, Korea

Correspondence to :

Se-Yeong Hamm

hsy@pusan.ac.kr

Received: June 8, 2004; Accepted: September 9, 2004

Abstract

Changwon City first constructed riverbank filtration plants in Book-Myeon and Daesan-Myeon in Korea in the year 2001. This study evaluated hydrogeological characteristics and groundwater flow simulation between the Nakdong River and the fluvial aquifers adjacent to the river in Book-Myeon, Changwon City. The groundwater simulation calculated the influx rate from the Nakdong River and the fluvial aquifers to pumping wells through the riverbank filtration system. The groundwater flow model utilized drilling, grain size analysis, pumping test, groundwater level measurements, river water discharge and rainfall data. Hydraulic heads calculated by the steady-state
model closely matched measured heads in pumping and observation wells. According to the transient flow model, using a total pumping amount of 14,000 m3/day, the flux into the pumping wells from the Nakdong River accounts for 8,390 m3/day (60%), 590 m3/day (4%) is from the aquifer in the rectilinear direction to the Nakdong River, and 5,020 m3/day (36%) is from the aquifer in the parallel direction to the Nakdong River. The particle tracking analysis shows that a particle from the Nakdong River moves toward the pumping wells at a rate of about 1.85 m/day and a particle from the aquifer moves toward the pumping wells at a rate of about 0.75 m/day. This study contributes to surface water/groundwater management modeling, and helps in understanding, how seasonal change affects pumping rates, water quality, and natural recharge.

Keywords hydrogeology, riverbank filtration, groundwater flow modeling, Nakdong River, Book-Myeon

Article

Econ. Environ. Geol. 2004; 37(5): 499-508

Published online October 31, 2004

Copyright © THE KOREAN SOCIETY OF ECONOMIC AND ENVIRONMENTAL GEOLOGY.

A Study on Groundwater Flow Modeling in the Fluvial Aquifer Adjacent to the Nakdong River, Book-Myeon Area, Changwon City

Se-Yeong Hamm1*, Jae-Yeol Cheong1, Hyoung-Su Kim2, Jeong-Sang Hahn3 and Su-Hee Ryu1

1Dept. of Geology, Pusan National University, Pusan 609-735, Korea
2Korea Institute of Water and Environment, Korea Water Resources Corporation, Daejeon 306-711, Korea
3Dept. of Earth System Sciences, Yonsei University, Seoul 120-749, Korea

Correspondence to:

Se-Yeong Hamm

hsy@pusan.ac.kr

Received: June 8, 2004; Accepted: September 9, 2004

Abstract

Changwon City first constructed riverbank filtration plants in Book-Myeon and Daesan-Myeon in Korea in the year 2001. This study evaluated hydrogeological characteristics and groundwater flow simulation between the Nakdong River and the fluvial aquifers adjacent to the river in Book-Myeon, Changwon City. The groundwater simulation calculated the influx rate from the Nakdong River and the fluvial aquifers to pumping wells through the riverbank filtration system. The groundwater flow model utilized drilling, grain size analysis, pumping test, groundwater level measurements, river water discharge and rainfall data. Hydraulic heads calculated by the steady-state
model closely matched measured heads in pumping and observation wells. According to the transient flow model, using a total pumping amount of 14,000 m3/day, the flux into the pumping wells from the Nakdong River accounts for 8,390 m3/day (60%), 590 m3/day (4%) is from the aquifer in the rectilinear direction to the Nakdong River, and 5,020 m3/day (36%) is from the aquifer in the parallel direction to the Nakdong River. The particle tracking analysis shows that a particle from the Nakdong River moves toward the pumping wells at a rate of about 1.85 m/day and a particle from the aquifer moves toward the pumping wells at a rate of about 0.75 m/day. This study contributes to surface water/groundwater management modeling, and helps in understanding, how seasonal change affects pumping rates, water quality, and natural recharge.

Keywords hydrogeology, riverbank filtration, groundwater flow modeling, Nakdong River, Book-Myeon

    KSEEG
    Jun 30, 2024 Vol.57 No.3, pp. 281~352

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