Title: | The effect of reduced flow on downstream water systems due to the Kumgangsan Dam under dry conditions |
Authors: | Lee, G., H.W. Lee, Y.S. Lee, J.H. Choi, J.E. Yang, K.J. Lim and J. Kim |
Year: | 2019 |
Journal: | Water |
Volume (Issue): | 11 |
Pages: | 4 |
Article ID: | 739 |
DOI: | 10.3390/w11040739 |
URL (non-DOI journals): | |
Model: | SWAT |
Broad Application Category: | hydrologic only |
Primary Application Category: | reservoirs, ponds, lakes and/or other impoundment effects |
Secondary Application Category: | hydrologic assessment |
Watershed Description: | Euiam Dam drainage area, a tributary of the North Han River located in southeast North Korea and northeast South Korea. |
Calibration Summary: | |
Validation Summary: | |
General Comments: | |
Abstract: | Water resource disputes for Transboundary Rivers are frequent and critical issues among
countries. The Kumgangsan Dam was constructed (in North Korea) in the Transboundary River
(North Han river) that affects the water resources downstream (in South Korea) of the dam.
The amount of water resource (e.g., streamflow, discharge) downstream of the Kumgangsan dam has
decreased after the dam construction which might cause decreased hydroelectric power and water
pollution in the downstream dams, especially during the dry season. Thus, this study analyzed the
changes in the inflow into the Euiam Lake (North Han River) by the construction of the Kumgangsan
Dam through hydrological modeling and examined the discharge of Chuncheon Dam (inflow into
Euiam Lake) considering the flow control in the Kumgangsan Dam under the dry condition scenario.
In addition, the changes of base flow during different seasons were analyzed because the majority of
streamflow is contributed by the base flow during dry and drought seasons. As shown in the results,
it was found that the discharge from the Kumgangsan Dam has a wide effect on the downstream
dams located in South Korea. The inflow of downstream dams was significantly influenced by the
discharge of the upstream dam, and the base flow was also affected by the decreased discharge
of dams. Based on these findings, upstream dam managements should be carefully considered to
maintain the water resource and aquatic ecosystem for the downstream dam watershed. Furthermore,
the results of this study can be used as the preliminary information when discussing the problems of
water allocation and flood prevention with North Korea. |
Language: | English |
Keywords: | Kumgangsan Dam, Transboundary River, inflow and discharge, base flow, dry condition |