yes, dams can flood lands .
not many of them
We construct dams to make sure water doesn't flood states and cities.
because there cool like that
they put up various dams.
The three gorges dams.
some raw backs of building Flood-Control Dams are it is EXTREMELY expensive, and takes many months to years to build. It also disrupts a river system.
By building dams - for example, the construction of the Aswan Dam in the 1960's meant that from 1970 the annual flood was controlled.
Yes, it did until several dams were built to control it.
They had on the main rivers some dams that did help a bit but not enough
Building dams can flood land and affect fish and wildlife
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.