Reach 11 Detention Dike 1
Reach 11 Detention Dike 1 is an earth dam located in Maricopa County, Arizona, built in 1977. It carries a High hazard potential classification.
About Reach 11 Detention Dike 1
Reach 11 Detention Dike 1 is a dam in Maricopa, Arizona. The dam is owned by Bureau Of Reclamation (federal). It impounds the None.
The dam stands 35 feet tall and stretches 18,739 feet across, has a maximum storage capacity of 19,500 acre-feet, and collects water from a drainage area of 34 square miles. Completed in 1977, the structure is 49 years old.
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 03/31/2021.
At 35 feet, this dam is taller than 82% of dams nationwide.
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 |
| River/Stream | None |
| Coordinates | 33.65412, -111.96854 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 35 ft |
| Dam Length | 18,739 ft |
| Year Completed | 1977 (49 years old) |
Storage & Hydraulics
| NID Storage | 19,500 acre-ft |
| Max Storage | 19,500 acre-ft |
| Normal Storage | 19,500 acre-ft |
| Drainage Area | 34 sq mi |
| Spillway Type | Controlled |
Ownership & Safety
| Owner | BUREAU OF RECLAMATION |
| Owner Type | Federal |
| Hazard Classification | High |
| Condition Assessment | Not Available |
| Last Inspection | 03/31/2021 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | AZ82914 |
| Federal ID | AZ82914 |
| More Info | State Dam Safety Program |