Linked from
The 11 pages that link to Hoover Dam, each with the reason it gives.
Colorado RiverBroader topic: It regulates flows and stores water for users downstream.
ArizonaRelated: Its water and electricity projects transformed the region around western Arizona.
Lake MeadRelated: Its construction impounded the Colorado River to form the reservoir.
Acre-footRelated: Its reservoir and water releases are described using acre-foot measurements.