AZ10310 - Horseshoe Dam


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Horseshoe Dam


	Statistics

General

Region (Map) ................. Lower Colorado
State (Map) ...................... Arizona

County .............................. Maricopa

Project: .............................. Salt River
Dam type: ......................... Earthfill

Location: .......................... 58 mi NE of Phoenix

Watercourse: ................... Verde River

Reservoir: ......................... HorseShoe

Construction Date: ..........1944-1946

National ID Number ....... AZ10310

Hydrologic Unit Code ......

Dimensions

Crest Elevation of Dam: .................... 2055.0 ft
Structural Height of Dam: ................... 194.0 ft
Crest Length: ...................................... 1140.0 ft
Top of Joint Use: ................................. NA
Top of Active Conservation: ........... 2026.0 ft
Top of Inactive Conservation: ......... NA
Spillway Crest: .................................... 2000.0 ft
Top of Dead Storage: ........................ 1915.0 ft
Streambed at Dam Axis : ................... 1895.0 ft

Hydraulics

Normal Water Surface Elev: ........... 2026.0 ft
Hydraulic Height: ............................ 142.0 ft
Service Spillway Type:

Uncontrolled Crest .............................No

Morning-Glory ....................................... No
Crest Length ....................................... NA
Gated .................................................. Yes

Capacity at Elev: 2035.5 ft, 250,000 cfs

Auxiliary Spillway ..................................... No

Capacity at Elev. .............................. 0 cfs

Outlet Works Capacity at
Elevation 2026.0 ft., .................. 2,200 cfs

Hydrology

Drainage Area: ........................... 5630.0 sq mi

Hydrometeorological Report HMR 49
Flood Type: .............................Winter General

Storm Duration: ...................................... 72 hrs

Probable Maximum Flood (PMF) Report:

Peak Inflow: ................................. 562,000 cfs

Inflow Volume: ................... 2,410,000 acre-ft

Flow Duration: .................................. 15 days

PMF Routing MWS Elev.: .................... N/A

Initial Routing Elev: ........................ 2026.0 ft

Study Date: .......................... December 1988

Power Generation

Power Generation at Dam Site - None

Bureau of Reclamation Power Program

Narration

Geology

Horseshoe Dam is located in a narrow constriction of the Verde River. The valley walls are relatively steep, rising from river level at approximately 45 degrees. Rock at the dam and appurtenances consist of alternating beds of volcanics which include basalt, tuff, ash and tuffaceous conglomerate. The beds dip on the order of 20 to 30 degrees to the southwest. Alluvium within the valley at the site had a maximum depth of 50 feet. Portions of the volcanic beds are relatively highly jointed. The joints are generally tight; however, in some areas, especially at the right abutment, the joints were open to nominal depths.

Links

| Recreation |

| Dams Located by State | USBR Arizona Dams | Lower Colorado Region Dams |

| Owner: Bureau of Reclamation, Phoenix Area Office,
PO Box 81169, Phoenix, AZ 85069-1169, (602) 216-3999

| Operator: Salt River Project Agricultural Improvement & Power District,
PO Box 52025, Phoeniz, AZ 85072-2025, (602) 236-5900