Improvement of Water Supply Capability of the Nakdong River Basin Dams with Weirs

Title & Authors
Improvement of Water Supply Capability of the Nakdong River Basin Dams with Weirs
Jang, Cheol-Ho; Kim, Young-Oh;

Abstract
This study sought to reevaluate the water supply capacities of the Nakdong river dams, and identify measures to remedy any shortages using weirs, focusing on 5 multipurpose dams and 8 weirs. The reevaluation of the dams was performed by the HEC-5 program using the original design criteria and inflow data recorded for each dam. The results show that the capacities of the 3 dams has decreased to 73~87%. Three simulations were performed to determine the effect of coordinating the dams and weirs. The first simulation was based on individual operation of the dams; the second on coordinated operation of the dams; and the third on coordinated operation of the dams and weirs. To obtain a water supply reliability of 95%, the annual water shortage was calculated for a 20-year period (1992~2011). In addition, long-term runoff simulation data used in the national river basin investigation by the Ministry of Land, Infrastructure and Transportation were used with the dam discharge data, because long-term inflow data for the weirs were not available. The simulations were performed by the HEC-ResSim program, with the reservoir network divided into 2 groups based on the Waegwan water station. The results show that water supply capacity for the 3 simulations to be $\small{2424Mm^3/yr}$, $\small{2612Mm^3/yr}$ and $\small{2734Mm^3/yr}$, respectively. This indicates that coordinated operation of the dams and weirs could provide an additional water supply of $\small{122Mm^3/yr}$.
Keywords
Coordinated operations;Dam reevaluation;The nakdong river;Water supply capacity;Weirs;
Language
Korean
Cited by
References
1.
Alexander, G. N. (1962). "The use of the gamma distribution in estimating regulated output from storages." Civil Engineering Transactions, The Institution of Engineers, Australia, Vol. 4, No. 1, pp. 29-34.

2.
Chae, S. I., Kim, J. H. and Kim, S. K. (2012). "A study on evaluation of water supply capacity with coordinated weirs and multi-reservoir operating model." Journal of Korea Water Resources Association, Vol. 45, No. 8, pp. 839-851 (in Korean).

3.
Cheong, T. S., Kang, S. W., Ko, I. H. and Hwang, M. H. (2007). "Development and validation of KModSim for the decision support system in geum river basin." Journal of KSCE, Vol. 27, No. 3B, pp. 319-329 (in Korean).

4.
David, R. M. (1993). Handbook of Hydrology, McGraw-Hill.

5.
Gong, J. T., Kim, J. H. and Kim, S. K. (2013). "A study on the fundamental comparison of simulation and optimization approaches for water resources systems planning and management." Journal of Korea Water Resources, Vol. 46, No. 4, pp. 373-387 (in Korean).

6.
Hashimoto, T., Stcdinger, J. R. and Loucks, D. P. (1982). "Reliability, resiliency, and vulnerability criteria for water resource system performance evaluation." Water Resources Research, Vol. 18.

7.
Johnson, W. K., Wurbs, R. A. and Beegle, J. E. (1990). "Opportunity for reservoir-storage reallocation." Journal of Water Resources Planning and Management, Vol. 116, No. 4, pp. 550-566.

8.
Korea Development Institute (KDI) (2011). Prefeasibility investigation of clean water supply project for Kyongbuk.Daegu, KDI (in Korean).

9.
Korea Water Resources Association (KWRA) (2011). Standards of dam design, KWRA (in Korean).

10.
K-water (2013). Handbook of dam operation, K-water (in Korean).

11.
Labadie, J. W. (2004). "Optimal operation of multi reservoir systems: State-of-the-Art Review." Journal of Water Resources Planning and Management, ASCE, Vol. 130, No. 2, pp. 93-111.

12.
Lee, D. H., Choi, C. W., Yu, M. S. and Yi, J. E. (2012). "Reevaluation of multi-purpose reservoir yield." Journal of Korea Water Resources Association, Vol. 45, No. 4, pp. 361-371 (in Korean).

13.
Lund and Guzman (1999). "Some derived operating rules for reservoirs in series or in parallel." Journal of Water Resources Planning and Management, Vol. 125, No. 3, pp. 143-153.

14.
McMahon, T. A. and Mein, R. G. (1986). River and Reservoir Yield, Water Resources Publications, USA.

15.
Ministry of Construction and Traffic (MOCT) (1998). Reevaluation of exsisting dams - Nakdong river, K-water (in Korean).

16.
Ministry of Construction and Traffic (MOCT), K-water (2010). Reevaluation of exisisting dams and optimum allocation of the capacity, K-water (in Korean).

17.
Ministry of Construction and Traffic (MOCT), K-water (2011). The National River Basin Investigation 2011, K-water (in Korean).

18.
Ministry of Land, Transport and Maritime Affairs (MLTMA), K-water (2013). Sourcebook of the 21st World Water Day, K-water (in Korean).

19.
Nate, B., Katherine, M. and Jay, L. (2012). "Re-operation of major reservoirs for flood and environmental management." World Environmental and Water Resources Congress, ASCE 2012, pp. 2388-2394.

20.
Ripple, W. (1883). "The capacity of storage reservoirs for water supply." Proceedings Institution of Civil Engineers, Vol. 71, pp. 270-278.

21.
US. Army Corps of Engineers (1998). HEC-5, Simulation of Flood Control and Conservation Systems, User's Manual, USACE.

22.
US. Army Corps of Engineers (2007). HEC-ResSim, Reservoir System Simulation, User's Manual, USACE.

23.
US. Army Corps of Engineers (2010). Yellowtail Dam Reallocation Study, USACE.

24.
Waitt, F. W. F. (1945). "Studies of droughts in the sydney catchment areas." Journal of The Institution of Engineers, Australia, Vol. 17, No. 4-5, pp. 90-97.

25.
Yoon, G. H. (2011). Development of downstream control function rule for parallel reservoirs with HEC-ResSim, Master's Thesis, Kyungpook University (in Korean).