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How to retain silt content in dam and canal because it is very big problem for my point of view. due to silt life of dam structure reduce very rapidly. Whats your suggestion please 

because i want to research in that topic

In my opinion, the best way is to reduce the amount of silt entering the water system from the source by implementing ordinances and standards that require sediment erosion control on sites that are at a high risk of soil erosion. In other words, fix the problems upstream. Once it is already in the stream, letting it settle in a dam pond is probably better than passing it down the line. As capacity is reduced in the pond or canal, dredging is necessary.

Mubsher: here are some references I can suggest. If you are not familiar with them – have a look. I am sure they will help you in your research.

• GL Morris and J Fan 2010. Reservoir Sedimentation Handbook – Design and Management of Dams, Reservoirs and Watersheds for Sustainable Use. McGraw-Hill.

• Colorado State University 2019. Reservoir Sediment Management: Building a Legacy of Sustainable Water Storage Reservoirs. National Reservoir Sedimentation and Sustainability Team White Paper.

• USBR (United States Bureau of Reclamation) 1982. Reservoir Sedimentation – Technical Guideline.

• USBR/USGS ---. Reservoirs: Sedimentation, Monitoring, and Management, Vol 1. United States Geological Survey (USGS).

• Obialor CA et al, 2019. Reservoir Sedimentation: Causes, Effects and Mitigation. International Jr of Advanced Research, 5(10), 92-109.

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Dr Dilip K Barua, PhD

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