A Hydrological Tank Model Assessing Historical Runoff Variation in the Hieu River Basin
The Hieu River is the largest tributary on the left bank of the Ca River, which is one of the large basins in north-central Vietnam. Here, we use cumulative anomaly tests and Pettitt tests to ascertain the turning points in annual rainfall and discharge during the time period 1962–2014. The results of our statistical analysis reveal a breaking point in 1982 for the rainfall time series and in the late 1970s and late 1990s for the discharge time series. A storage-type hydrological model is used to determine runoff processes for different periods corresponding to detecting points of rainfall and discharge. The results of our model simulation confirm that a two-tank model with monthly input data is the most appropriate tank model for the Hieu River. The difference between the hydrographs improved when we used a rain factor function. A comparison between the observed and calculated runoff revealed a drastic decrease between 1999 and 2014. The rate of discharge loss in the Lower Basin was approximately six times higher than that in the Upper Basin, a finding potentially due to reservoir construction and intensive water use for agricultural and residential purposes.
Basri, H. (2013). Development of rainfall-runoff model using tank model: Problems and challenges in province of Aceh, Indonesia. Aceh International Journal of Science and Technology, 2(1): 26–36. http://doi.org/10.13170/ aijst.2.1.574
Chikamori, H., Heng, L. and T. Daniel (Eds) (2012). Catalogue of rivers for Southeast Asia and the Pacific – Volume VI. UNESCO-IHP Regional Steering Committee for Southeast Asia and the Pacific. Retrieved from http:// unesdoc.unesco.org/images/0021/002170/217039e.pdf
Cung, N.V. (Ed.) (1979). Technical Manual for Irrigation. The Agricultural Publishing House, Ha Noi. (In Vietnamese)
ENV (Vietnam Electricity) (2001). Feasibility study for Ban La hydropower project, meteorological condition. Ha Noi, Vietnam. (In Vietnamese)
Gao, P., Mu, X.-M., Wang, F. and R. Li (2011). Changes in streamflow and sediment discharge and the response to human activities in the middle reaches of the Yellow River. Hydrological Earth System Sciences, 15: 1–10. http://doi. org/10.5194/hess-15-1-2011
Giang, P.Q., Toshiki, K., Sakata, M., Kunikane, S. and T.Q. Vinh (2014). Modelling climate change impacts on the seasonality of water resources in the upper Ca river watershed in Southeast Asia. Scientific World Journal. http://doi.org/10.1155/2014/279135
Kadarisman (1993). A comparative study of the application of two catchment models to the Babak River Basin Lombok Island – Indonesia. Memorial University of Newfoundland. Retrieved from http://research.library.mun. ca/id/eprint/5308
Kuok, K., Harun, S. and P.-C. Chiu (2011). Investigation best number of tanks for hydrological tank model for rural catchment in humid region. The Journal of the Institution of Engineers, Malaysia, 72(4): 1–11.
Liu, C. and H. Zheng (2002). Hydrological cycle changes in China`s large river basin: The Yellow River drained dry. In: M. Beniston (Ed.), Climatic Change: Implications for the Hydrological Cycle and for Water Management. Kluwer, Dordrecht.
Mondal, M.S., Kouchi, Y. and K. Okubo (2009). Sedimentation and thermal stratification during floods: A case study on Hail Haor of North-East Bangladesh. Journal of Hydrology and Meteorology, 6(1): 15–25. http://doi.org/10.3126/jhm. v6i1.5480
Nyadawa, M.O., Kobatake, S. and K. Ezaki (1996). A modified tank model and applications in some river basins in Kenya. The Japan Society of Hydrology and Water Resources, 9(6): 498–512. Retrieved from https://www. jstage.jst.go.jp/article/jjshwr1988/9/6/9_6_498/_article
Pradhan, N.R. (2001). Applicability of BTOPMC model and tank model in sub-catchments of Sun Kosi Basin, Nepal. Tribhuvan University. Retrieved from http://lib.icimod. org/record/271/files/333.91PRA.pdf
Shiklomanov, I. (1993). World fresh water resources. In: P.H.Gleick (Ed.), Water in crisis a guide to the world’s fresh water resources. Oxford University Press, New York.
Sugawara, M. (1995). Tank model. In: V.P. Singh (Ed.), Computer models of watershed hydrology. Water Resources Publications, Highlands Ranch, Colorado.
Vörösmarty, C.J., Green, P., Salisbury, J. and R.B. Lammers(2000). Global water resources: Vulnerability from climate change and population growth. Science, 289(5477): 284–288. http://doi.org/10.1126/science.289.5477.284
Wang, S., Yan, M., Yan, Y., Shi, C. and L. He (2012). Contributions of climate change and human activities to the changes in runoff increment in different sections of the Yellow River. Quaternary International, 282: 66–77. http://doi.org/10.1016/j.quaint.2012.07.011
Yao, H., Shi, C., Shao, W., Bai, J. and H. Yang (2015). Impacts of climate change and human activities on runoff and sediment load of the Xiliugou Basin in the Upper Yellow River. Advances in Meteorology, http://doi. org/10.1155/2015/481713
Zhang, L., Dawes, W.R. and G.R. Walker (2001). Response of mean annual evapotranspiration to vegetation changes at catchment scale. Water Resources, 37(3): 701–708. http:// doi.org/10.1029/2000WR900325