There are six dams on the Colorado river.
There are six dams on the Colorado River. I have listed them in another answer, and posted that answer as a related link.
none There are probably about 29 dams.
There are 11 dams which currently impound water and/or produce hydroelectric power on the Missouri River. These are: Canyon Ferry, Holter, Black Eagle, Rainbow, Ryan, and Fort Peck Dams in Montana;...
Hoover Dam.