EGU General Assembly 2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.

Hydro-geomorphic dataset of catchments across the Tibetan Plateau

yuhan guo1, hongxing zheng2, yuting yang1, and yanfang sang3
yuhan guo et al.
  • 1Tsinghua University, State Key Laboratory of Hydroscience and Engineering, Department of Hydraulic Engineering, China (
  • 2CSIRO Land and Water, Canberra, ACT 2601, Australia
  • 3Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing, 100101, China

The Tibetan Plateau is known as the water tower of Asia, supplying water to almost 2 billion people. As a result of the unique high-elevation terrain and atmospheric circulation, this region is severely affected by floods each year. Due to global warming in recent years, the Tibetan Plateau is experiencing more extreme precipitation events, and flood disasters are more likely to occur. However, compared with other regions in China, the Tibetan Plateau is still in its early stage when it comes to flood risk assessment and prediction because of the complex topographic conditions and a lack of gauging stations. At the same time, the unclear flood occurrence mechanism and the various flood types under monsoons and upper-level westerly winds in this region lead to strong uncertainty in the storm flood simulation.

To provide support for regional-scale hydrological simulation and improve the flood risk assessment information, we produce a hydro-geomorphic unit hydrograph dataset that characterizes the rainfall and runoff response relationship in 11069 catchments across the Tibetan Plateau. More specifically, the main geomorphological features of 11069 catchments are extracted first. Then, the WFIUHs are derived from DEM and other remote sensing data combined with the empirical physical formula. Finally, the performance of the WFIUHs in hydrological simulation is assessed in several gauging catchments in this region.

How to cite: guo, Y., zheng, H., yang, Y., and sang, Y.: Hydro-geomorphic dataset of catchments across the Tibetan Plateau, EGU General Assembly 2023, Vienna, Austria, 24–28 Apr 2023, EGU23-12003,, 2023.