General

• Region (Map) : ...................Upper Colorado
• State (Map) ........................ New Mexico
• County ................................ Sierra
• Project: ................................ Rio Grande
• Dam type: ........................... Earthfill
• Location: ..............................S Elephant Butte Res.
• Watercourse: ..................... Rio Grande
• Reservoir: ........................... Caballo
• Construction Date: ............1936-1938
• National ID Number .......... NM00131
• Hydrologic Unit Code ......

Dimensions

• Crest Elevation of Dam: .....................4190.00 ft
• Structural Height of Dam: ..................    96.00 ft
• Crest Length: .......................................4558.00 ft
• Top of Joint Use: .................................          NA
• Top of Active Conservation: ........... 4172.44 ft
• Top of Inactive Conservation: ......... 4104.00 ft
• Spillway Crest: .................................... 4161.00 ft
• Top of Dead Storage: ........................ 4104.00 ft
• Streambed at Dam Axis : ................... 4104.00 ft

Hydraulics

• Normal Water Surface Elev: .............4172.44 ft
• Hydraulic Height: ................................. 78.00 ft
• Service Spillway Type:
•    Uncontrolled  Crest    ................................ No
•    Morning-Glory ........................................... No
•    Crest Length    ........................................... NA
•    Gated      ...................................................... No
•    Capacity at Elev:  4182.0  ft,           33,200 cfs
• Auxiliary Spillway ......................................... No
•     Capacity at Elev.   .................................. 0 cfs
• Outlet Works Capacity at
•     Elevation  4182.0 ft.,  ....................... 5,000 cfs 

Hydrology

• Drainage Area: ...............................1300.0 sq mi
• Hydrometeorological Report               HMR 55
• Flood Type: ...............................Winter General
• Storm Duration: ........................................ 72 hrs
• Probable Maximum Flood (PMF) Report:
•   Peak Inflow: .....................................109,800 cfs
•   Inflow Volume: ......................... 686,000 acre-ft
•   Flow Duration: ......................................15 days
•   PMF Routing MWS Elev.: .............. 4172.44 ft
•   Initial Routing Elev: ..........................4215.73 ft
•   Study Date: ...................................... April 1997