JOURNAL BROWSE
Search
Advanced SearchSearch Tips
A Study on Spatial and Temporal Patterns of Water Quality in the Middle Area of the Nakdong River, Korea
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
A Study on Spatial and Temporal Patterns of Water Quality in the Middle Area of the Nakdong River, Korea
Na, Eun Hye; Park, Suyoung; Kim, Jongha; Im, Seongsoo; Kim, Kyunghyun;
  PDF(new window)
 Abstract
We investigated the spatial and temporal patterns of water quality in the Gangjung-Goryoung weir that is located in the middle area of the Nakdong river, Korea. The monitoring results indicated that there are discernible vertical differences in water quality during the pre- and post-monsoon periods (May to September). During this period, it was observed that the weak thermal stratification formed at the maximum level, and pH, Chl-a, and DO concentrations in the surface layer were higher than those in the bottom layer. This vertical difference was especially noticeable for DO concentrations: there were DO depletions at the bottom layer in late June to early August. During the summer monsoon period with heavy rainfall, there was a decline in vertical differences in water quality. From this study, it was suggested that continuous monitoring of vertical profiles could become a useful tool for identifying the spatial and temporal distributions of water quality and for developing the best management policy for water quality in the Nakdong river.
 Keywords
Algal bloom;DO depletion;Gangjung-Goryoung weir;Nakdong river;Thermal stratification;
 Language
Korean
 Cited by
 References
1.
Caissie, D., Satish, M. G., and Nassir, E. J. (2007). Predicting Water Temperatures using a Deterministic Model: Application on Miramichi River Catchment (New Brunswick, Canada), Journal of Hydrology, 336, pp. 303-315. crossref(new window)

2.
Cha, Y. C., Chung, S. W., Ryu, I. G., and Ban, Y. J. (2010). Simulations of Thermal Stratification of Soyang Reservoir using Three-dimensional Hydrodynamic Model, ELCOM, Proceedings of the 2010 Spring Co-Conference of Korean Society on Water Environment and Korean Society of Water and Wastewater, Korean Society on Water Environment and Korean Society of Water and Wastewater, pp. 513-514. [Korean Literature]

3.
Chung, S. W., Lee, H. S., Choi, J. K., and Ryu, I. G. (2009). Simulations of Thermal Stratification of Daecheong Reservoir using Three-dimensional ELCOM Model, Journal of Korean Society on Water Environment, 25(6), pp. 922-934. [Korean Literature]

4.
K-water. (2014). Real-time Information, http://www.kwater.or.kr/info/sub02/sib01/sub01/dam/hydr.do (accessed Dec, 2014).

5.
Lee, S. H., Kim, B. R., and Lee, H. W. (2014). A Study on Water Quality after Construction of the Weirs in the Middle Area in Nakdong River, Journal of Korean Society of Environmental Engineering, 36(4), pp. 258-264. [Korean Literature] crossref(new window)

6.
Martin, J. L. and McCutcheon, S. C. (1998). Hydrodynamic and Transport for Water Quality Modeling, CRC Press, Inc., New York, N. Y., pp. 343.

7.
Ministry of Construction and Transportation (MOCT). (2009). Master Plan for the 4 Major Rivers Restoration Project, Ministry of Construction and Transportation. pp. 29. [Korean Literature]

8.
Ministry of Environment (MOE). (2014). 2014 Annual Report on Water Quality Monitoring Program, 11-1480000-001223-10, Ministry of Environment. [Korean Literature]

9.
Ministry of Environment (MOE). (2015). Annual Report on Algal Blooms and Management, 11-1480000-001363-10, Ministry of Environment, pp. 29. [Korean Literature]

10.
Na, E. H. and Park, S. S. (2005). A Hydrodynamic Modeling Study to Determine the Optimum Water Intake Location in Lake Paldang, Korea, Journal of the American Water Resources Association, 41(6), pp. 1315-1332. crossref(new window)

11.
National Institute Environment Research (NIER). (2003). Rates and Constants of Water Quality Modeling in the Nakdong River System, National Institute Environment Research, pp. 137-139. [Korean Literature]

12.
Norton, W. R., King, I. P., and Orlob, G. R. (1968). A Finite Element Model for Lower Granite Reservoir, Water Quality Report: Lower Granite Lock and Dam, Snake River, WasingtonIdaho - Finite Element Hydrodynamic Model, Appendix F, 3(3), Report by Water Resources Engineers, Inc., for U. S. Army Corps of Engineers District, Walla Walla, WA.

13.
Regional Aquatics Monitoring Program (RAMP). (2012). Water and Sediment Quality in the Athabasxa River Basin, http://ramp-alberta.org/river/water+sediment+quality.aspx (accessed Dec, 2012).

14.
Robarts, R. D. and Zohary, T. (1987). Temperature Effects of Photosynthetic Respiration and Growth Rates of BloomForming Cyanobacteria, New Zealand Journal of Marine & Freshwater Research, 21, pp. 391-399. crossref(new window)

15.
Shade, A., Chiu, C. Y., and McMahon, K. D. (2010). Seasonal and Episodic Lake Mixing Stimulate Differential Planktonic Bacterial Dynamics, Microbial Ecology, 53(3), pp. 546-554.

16.
Ward, J. V. (1985). Thermal Characteristics of Runing Waters, Hydrobiologia, 125, pp. 31-46. crossref(new window)

17.
World Health Organization (WHO). Guidelines for Safe Recreational Water Environments, Volume 1: Coastal and Fresh Waters, ISBN-92-4-154580-1, World Health Organization, Geneva, Switzerland, pp. 137-139.

18.
Xia, L., Xiaohua, L., and Yuwei, C. (2011). The Effects of Temperature and Nutrient Ratios on Microcystis Blooms in Lake Taihu, China: An 11-year Investigation, Harmful Algae, 10, pp. 337-343. crossref(new window)

19.
Yu, J. J., Lee, H. K., Lee, K. L., Lyu, H. S., Whang, J. W., Shin, L. Y., and Chen, S. U. (2014). Relationship between Distribution of the Dominant Phytoplankton Species and Water Temperature in the Nakdong River, Korea, Korean Journal of Ecology and Environment, 47(4), pp. 247-257. [Korean Literature] crossref(new window)

20.
Yu, J. J., Lee, K. L., Lee, H. K., Whang, J. W., Lyu, H. S., Shin, L. Y., Park, A. R., and Chen, S. U. (2015). Relations of Nutrient Concentrations on the Seasonality of Algal Community in the Nakdong River, Korea, Journal of Korean Society on Water Environment, 31(2), pp. 110-119. [Korean Literature] crossref(new window)