Writeshop kicks off Koshi Basin Programme research study


The Koshi Basin Programme conducted a two-day writeshop on the state and trends of land use land cover change, hydro-geomorphology, erosion, and sedimentation in the Koshi River basin to initiate a three-year comprehensive research study in China, India, and Nepal. 

The collaborative and interdisciplinary research will improve the knowledge base on the hydro-geomorphic development of rivers, sediment transport, bed level change, influence of infrastructure development on river dynamics, and changes in flood levels. Leading experts from China, India, and Nepal extensively discussed the complexity and challenges of tackling research to address the following questions:

  • What are the main causes of erosion in the high and middle mountains of the Koshi basin?
  • What are the quantitative contributions of isolated large and gradual events to erosion processes?
  • What are the roles of natural (geology, topography, and climate) and anthropogenic factors (land use and land cover, infrastructure) in the erosion process? What are the past temporal dynamics and what is likely to happen in the future?
  • What are the sediment dynamics, including sediment transport and deposition, in the high and middle-mountains? How do sediment dynamics impact the present and potential infrastructure in high and middle mountains of the basin?
  • What is the quantum of sediment brought to the plains of the basin? What are its linkages to river dynamics and related hazards?
  • How is sedimentation and associated processes in the plains related to natural and anthropogenic processes in the high and middle mountains of the basin?
  • Are there viable sustainable options to manage excess sedimentation and reduce the risk of flooding? What are possible policy recommendations?

The writeshop enabled participants to frame a scientifically robust approach and method to produce data and results. Participants also laid out a tentative work plan and outlined the resources required.