not many of them
yes, dams can flood lands .
Yes, it did until several dams were built to control it.
The three gorges dams.
Hydroelectric power and water reservoirs as well as flood control.
Some drawbacks of building flood-control dams include altering natural river ecosystems, disrupting fish migration patterns, and causing downstream erosion due to decreased sediment flow. Additionally, dams can displace communities and impact water quality and availability downstream.
0 at least 15 including the diversions
Flood control, hydroelectric power generation, municipal reservoirs and recreation.
Yes it can
Flood control
No, a floodplain is the low-lying area along a river or stream that is prone to flooding. Flood control refers to measures taken to prevent or reduce the impact of flooding, such as building levees or dams or implementing land use regulations in flood-prone areas.
Dams erase beautiful stretches of river people may enjoy for fly fishing or other activities. Dams also make it more difficult for fish to migrate to their spawning grounds up river. These losses must be balanced against the benefits dams provide--water for irrigation, flood control, other recreational activities, and electricity.
flood control dams and channels prevent flooding.