Angostura Diversion Dam


The Middle Rio Grande Project was authorized by the Congress to improve and stabilize the economy of the Middle Rio Grande Valley by rehabilitation of the Middle Rio Grande Conservancy District facilities and by controlling sedimentation and flooding in the Rio Grande. The Bureau of Reclamation and the Corps of Engineers jointly planned the comprehensive development of the project. Reclamation undertook the rehabilitation of El Vado Dam, rehabilitation of project irrigation and drainage works, and channel maintenance. The Corps of Engineers was assigned the construction of flood control reservoirs and levees for flood protection.

There are three diversion dams, all of which have been rehabilitated. Angostura Diversion Dam, serving the Albuquerque Division, consists of a concrete weir section 17 feet high and 800 feet long; Isleta Diversion Dam, serving the Belen Division, is a reinforced concrete structure 21 feet high and 674 feet long with 30 radial gates; and San Acacia Diversion Dam, serving the Socorro Division, is 17 feet high and 700 feet long with 29 radial gates. Lands in the Cochiti Division, previously served by the Cochiti Diversion Dam, now receive their supply directly from Cochiti Dam, a Corps of Engineers flood control dam. Cochiti Diversion Dam was inundated by the construction of Cochiti Dam.

RegionFacilities in Upper Colorado | Upper Colorado Home Page
StateNew Mexico
ProjectMiddle Rio Grande
Dam Typeconcrete wall weir structure
Location5 miles northeast of Bernalillo, NM
Original Construction1934 and rehabilitated in 1958
Modified Construction
National ID Number
Hydrologic Unit Code

Structural Height17 ft
Hydraulic Height (Normal Operating Depth at Dam)4.5 ft
Top Parapet (Elevation)
Spillway Crest Elevation
Crest Elevation5083.0 ft
Crest Length800 ft
Crest Width
Base Width
Volume of Dam Construction Materials1500 cu yd
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 Elevation
Spillway Type
Auxiliary Spillway
Spillway Capacity at Elevation
Auxiliary Spillway Capacity at Elevation
Uncontrolled Spillway Capacity at Elevation
Outlet Works Capacity at Elevation
Diversion Capacity at Elevation 650 cfs
Drainage Area
Hydrometeorological Report (HMR)
Probable Maximum Flood (PMF) Report

Contact Information
OrganizationMiddle Rio Grande Conservancy District
Address1931 2nd Street, PO Box 581
CityAlbuquerque, NM 87103
Phone (Office)505 247-0234
OrganizationMiddle Rio Grande Conservancy District
Address1931 2nd Street, PO Box 581
CityAlbuquerque, NM 87103
Phone (Office)505 247-0234

Last updated: May 26, 2009