16 Questions
What is the primary function of a dam?
To prevent the flow of water and accumulate it in a reservoir
What happens to sediments when a river is stilled behind a dam?
They settle at the bottom of the reservoir
What is the term for the proportion of a river's total sediment load captured by a dam?
Trap efficiency
What is the consequence of dams interrupting the sediment transport through rivers systems?
Sediment accumulation within the reservoir
What type of sediment is virtually certain to be trapped by dams?
Gravel
What is the typical trap efficiency of dams for gravel?
100%
What can be transported as either bed load or suspended load, depending on turbulence of the flow?
Sand
What is the term for the process of sediment accumulation within a reservoir?
Reservoir sedimentation
Why do most river systems around the world show decreased sediment loads?
Due to trapping by upstream dams
What is the result of decreased sediment loads in rivers?
Increased channel erosion
What is the primary focus of studying hydrologic data in dam construction?
To estimate the amount of water the dam will collect
What is an environmental impact of sediment accumulation in dams?
Reduced water quality
What is a key consideration in site selection for dam construction?
Geotechnical suitability of the foundation
What is measured at gauge stations in dam construction?
Surface runoff and flood flows
What is studied in the context of dam construction to understand the structural stability of the foundation?
Stratigraphy and rock formations
What is a key aspect of the political and economic considerations in dam construction?
Cost-benefit analysis of dam construction
Learn about the fundamental principles of dam construction, including site selection, materials, and hydrologic data analysis. Understand the importance of precipitation, surface runoff, discharge measurements, and evaporation in dam construction. Explore the geotechnical criteria for foundation suitability and more.
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