What is Hoover Dam?
{{Infobox dam | name = Hoover Dam | name_official = Hoover Dam | image = Ansel Adams - National Archives 79-AAB-01.jpg | image_size = 250px | image_caption = Hoover Dam by [[Ansel Adams]], 1941 | location = [[Clark County, Nevada]] / [[Mohave County, Arizona]], U.S. | purpose = Power, flood control, water storage, regulation, recreation | status = Operational | construction_began = 1931 | opening = {{Start date and age|1936|p=yes|br=yes}} | demolished = | cost = $49 million (1931 budget)<br />(${{format price|{{Inflation|US-GDP|49000000|1931}}}} in {{Inflation-year|US-GDP}} dollars{{Inflation-fn|US-GDP}}) | owner = United States Government | operator = [[U.S. Bureau of Reclamation]] | dam_type = Concrete gravity-arch | dam_crosses = [[Colorado River]] | dam_length = {{convert|abbr=on|1,244|ft|m}} | dam_elevation_crest = {{convert|abbr=on|1,232|ft|m}} | dam_width_crest = {{convert|abbr=on|45|ft|m}} | dam_width_base = {{convert|abbr=on|660|ft|m}} | dam_volume = {{convert|abbr=on|3,250,000|cuyd|m3}} | spillway_type = 2 controlled Drum-Gate, Side channel | spillway_capacity = {{convert|abbr=on|400,000|ft3/s|m3/s}} | res_name = [[Lake Mead]] | res_capacity_total = {{convert|abbr=on|28537000|acre.ft|km3}} | res_capacity_active = {{convert|abbr=on|15853000|acre.ft|km3}} | res_capacity_inactive= {{convert|abbr=on|10024000|acre.ft|km3}} | res_catchment = {{convert|abbr=on|167800|sqmi|km2}} | res_surface = {{convert|abbr=on|247|sqmi|km2}} | res_max_length = {{convert|abbr=on|112|mi|km}} | res_max_width = | res_max_depth = {{convert|abbr=on|590|ft|m}} | res_elevation = {{convert|abbr=on|1,219|ft|m}} | plant_operator = U.S. Bureau of Reclamation <!-- | penstocks = 4 --> | plant_commission = 1936–1960 <!-- map stuff omitted -