Horseshoe Dam
Horseshoe Dam is a rockfill dam located in Maricopa County, Arizona, built in 1946. It carries a High hazard potential classification.
About Horseshoe Dam
The primary purpose of Horseshoe Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Bureau Of Reclamation (federal). It impounds the Verde River near Fort Mcdowell.
The dam stands 202 feet tall and stretches 1,140 feet across, creates a reservoir covering 3,656 acres, has a maximum storage capacity of 214,372 acre-feet, and collects water from a drainage area of 5,644 square miles. Completed in 1946, the structure is well-established, with more than 75 years of service.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. An emergency action plan is in place for this dam. The most recent inspection on record was 05/26/2021.
At 202 feet, this dam is taller than 99% of all dams in the United States.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Arizona dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | Arizona |
| County | Maricopa |
| Nearest City | Fort Mcdowell |
| River/Stream | Verde River |
| Coordinates | 33.98370, -111.71120 |
Physical Characteristics
| Dam Type | Rockfill |
| NID Height | 202 ft |
| Dam Height | 202 ft |
| Dam Length | 1,140 ft |
| Year Completed | 1946 (80 years old) |
Storage & Hydraulics
| NID Storage | 214,372 acre-ft |
| Max Storage | 214,372 acre-ft |
| Normal Storage | 131,427 acre-ft |
| Surface Area | 3,656 acres |
| Drainage Area | 5,644 sq mi |
| Max Discharge | 156,000 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Irrigation |
| Owner | BUREAU OF RECLAMATION |
| Owner Type | Federal |
| Hazard Classification | High |
| Condition Assessment | Not Available |
| Last Inspection | 05/26/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | AZ10310 |
| Federal ID | AZ10310 |
| More Info | State Dam Safety Program |