improving the existing flood control dam and reservoir,
and strengthening levees can protect Sacramento from the worst floods reasonably imaginable, at far less cost. It is no wonder that the Army is not recommending the dam. The Environmental Protection Agency and the Fish and Wildlife Service actively oppose it.
Flood control-A reservoir can be used to control the amount of water flowing in a river after heavy rain
or snow fall. The water level in the reservoir is kept low during the wetter periods of the year. When
heavy rain occurs, it is gated by the dam and held in the reservoir like a collecting tank. When the
reservoir gets too full, the floodwater can be passed downstream over a spillway.