Hoover Dam

Overview

Hoover Dam and Lake Mead, spanning the Arizona-Nevada state line, are located in the Black Canyon of the Colorado River about 35 miles southeast of Las Vegas, Nevada. It is a concrete thick-arch structure, 726.4 feet high and 1,244 feet long.  The dam contains 3.25 million cubic yards of concrete; total concrete in the dam and appurtenant works is 4.4 million cubic yards. 


General
RegionFacilities in Lower Colorado | Lower Colorado Home Page
StateNevada and Arizona
CountyClark (NV), Mohave (AZ)
ProjectBoulder Canyon
Dam TypeConcrete thick arch
ReservoirLake Mead
WatercourseColorado River
Location 35 miles southeast of Las Vegas, Nevada
Latitude36.0163
Longitude-114.7372
Net Generation3,254,593,045 kWh
Original Construction1931-1936
Modified Construction
National ID NumberNV10122
Hydrologic Unit Code

Dimensions
Structural Height726.4 ft
Hydraulic Height (Normal Operating Depth at Dam)576 ft
Top Parapet (Elevation)1236.0 ft
Spillway Crest Elevation1205.4 ft
Crest Elevation1232.0 ft
Crest Length1,244 ft
Crest Width45 ft
Base Width660 ft
Volume of Dam Construction Materials4,400,000 cu-yds
Streambed at Dam Axis 640 ft
Top of Exclusive Flood Control Pool (Elevation) 1229 ft
Top of Joint Use Pool (Elevation) 1219.6
Top of Active Conservation Pool (Elevation)
Top of Inactive Conservation Pool (Elevation) 1050 ft
Top of Dead Storage Pool (Elevation) 895 ft

Hydraulics & Hydrology
Total Water Storage at Elevation28,945,000 acre-ft at 1221.4
Maximum Water Surface Elevation1232 ft
Normal Water Surface Elevation
Spillway Type Concrete lined, side channel, gate controlled overflow weir
Spillway Capacity at Elevation 270,000 cfs at 1232 ft
Auxiliary Spillway
Auxiliary Spillway Capacity at Elevation
Uncontrolled Spillway Capacity at Elevation
Outlet Works Capacity at Elevation 52,200 cfs at 1219.6 ft
Diversion Capacity at Elevation
Drainage Area167,800 sq mi
Hydrometeorological Report (HMR)
Probable Maximum Flood (PMF) Report1980 PMF August general storm with 100-year snowmelt

Contact Information
Owner
OrganizationLower Colorado Dams Office
AddressPO Box 60400
CityBoulder City, NV 89006-0400
Phone702 494-2302
Fax702 494-2297
Operator
OrganizationLower Colorado Dams Office
AddressPO Box 60400
CityBoulder City, NV 89006-0400
Phone702 494-2302
Fax702 494-2297


Last updated: Jan 04, 2012