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Proceedings of the International Association of Hydrological Sciences An open-access publication for refereed proceedings in hydrology
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Volume 368
Proc. IAHS, 368, 343–349, 2015
https://doi.org/10.5194/piahs-368-343-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Proc. IAHS, 368, 343–349, 2015
https://doi.org/10.5194/piahs-368-343-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

  07 May 2015

07 May 2015

Estimating water availability across the Upper Salween and Mekong river basins

S. Liu1, W. Ding1,3, C. Liu1, L. Liu1,3, S. Bajracharya2, A. Shrestha2, and N. Shrestha Pradhan2 S. Liu et al.
  • 1Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Beijing, 100101, China
  • 2ICIMOD, Nepal
  • 3University of Chinese Academy of Sciences, China

Keywords: Upper Salween, Mekong River, PUB, disaggregating, HIMS Model

Abstract. According to Liu et al. (2014), borrowing, substituting and generating (BSG) are the main methods people used to acquire the discharge at ungauged stations. Two of the substitution (modelling and disaggregation) methods in combination with the borrowing idea are compared for simulating discharge for the Upper Salween and Mekong River Basin (USMRB). It is seen that with a simple borrowing/ disaggregating method, the Nash-Sutcliffe Efficiency (NSE) can reach 0.82. The similarity in the seasonal variation pattern is a more important requirement to identify if the two stations are to be considered as having hydrological similarity. From the experience obtained for the USMRB, an upstream station with shorter geographical distance may be more in hydrological similarity than a station in the far downstream. The NSE is quite low when borrowing occurs within the low altitude downstream region. The efficiency will be decreased when we borrow information from several stations which may be not in hydrological similarity.

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