Hydropower projects alter the sediment flow in rivers by capturing the sediments in the reservoirs created by the dams, sediments including sand, gravel, and boulders are also extracted locally to meet the demand for construction materials. The combined impact of these two pressures on the river sediments can be devastating for the river ecosystems. The webinar will sensitize the participants to importance of riverbed sediments in the river ecosystems, impacts on sediment flow caused by hydropower projects, extraction of sediments for commercial purposes on aquatic ecosystems, assessment of market and social aspects of sediment mining, and evaluation of supply demand balance of various grades of sediments to determine environmentally and socially sustainable extraction levels. A case study of a sediment mining plan recently prepared for a hydropower project will also be provided.
About the Presenters:
Dr. Lois Koehnken
Sediment Specialist
Dr. Cate Brown
Fresh Water Ecologist
Vaqar Zakaria
Managing Director
Hagler Bailly Pakistan
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