Laguna Diversion Dam


Laguna Dam, an original feature of the Yuma Project, is located on the Colorado River 13 miles northeast of Yuma, Arizona, and about 5 miles downstream from Imperial Dam. The original purpose of this dam was to divert Colorado River water to the project area. Since 1948, irrigation water for the project has been diverted at Imperial Dam. Laguna Dam now serves as a regulating structure for sluicing flows and for downstream toe protection for Imperial Dam. It has a structural height of 43 feet and contains 486,800 cubic yards of material.

RegionFacilities in Lower Colorado | Lower Colorado Home Page
StateArizona and California
CountyYuma, Ariz and Imperial, Calif
Dam TypeRockfill weir, concrete surfaced
WatercourseColorado River
LocationOn the Colorado River, 13 miles northeast of Yuma, Arizona
Original Construction1905
Modified Construction 1923-1924
National ID NumberAZ10315
Hydrologic Unit Code

Structural Height43 ft
Hydraulic Height (Normal Operating Depth at Dam)10 ft
Top Parapet (Elevation)
Spillway Crest Elevation151.3 ft
Crest Elevation151.0 ft
Crest Length4,780 ft
Crest Width
Base Width
Volume of Dam Construction Materials486,800 cu-yds
Streambed at Dam Axis
Top of Exclusive Flood Control Pool (Elevation)
Top of Joint Use Pool (Elevation)
Top of Active Conservation Pool (Elevation)
Top of Inactive Conservation Pool (Elevation)
Top of Dead Storage Pool (Elevation)

Hydraulics & Hydrology
Total Water Storage at Elevation
Maximum Water Surface Elevation
Normal Water Surface Elevation151.3 ft
Spillway Type
Auxiliary SpillwayNo
Spillway Capacity at Elevation
Auxiliary Spillway Capacity at Elevation
Uncontrolled Spillway Capacity at Elevation
Outlet Works Capacity at Elevation
Diversion Capacity at Elevation Diversion outlets closed June 23, 1948
Drainage Area
Hydrometeorological Report (HMR)
Probable Maximum Flood (PMF) Report

Contact Information
TitleArea Office Manager
OrganizationYuma Area Office
Address7301 Calle Agua Salada
CityYuma, AZ 85364
Phone (Office)928 343-8100
OrganizationImperial Irrigation District
AddressPO Box 937
CityImperial, CA 92251
Phone (Office)760 482-9600

Last updated: Jun 29, 2009