South Well Detention Dam
South Well Detention Dam is a gravity dam located in Graham County, Arizona, built in 1981. It carries a Low hazard potential classification.
About South Well Detention Dam
The primary purpose of South Well Detention Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Doi Blm (federal). It impounds the San Simon River.
The dam stands 24 feet tall and stretches 1,062 feet across, creates a reservoir covering 16 acres, has a maximum storage capacity of 334 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1981, the structure is 45 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. The most recent inspection on record was 07/07/2015. That was over 10 years ago.
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Location
| State | Arizona |
| County | Graham |
| River/Stream | San Simon River |
| Coordinates | 32.70955, -109.57400 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 24 ft |
| Dam Length | 1,062 ft |
| Year Completed | 1981 (45 years old) |
Storage & Hydraulics
| NID Storage | 334 acre-ft |
| Max Storage | 334 acre-ft |
| Normal Storage | 168 acre-ft |
| Surface Area | 16 acres |
| Drainage Area | 1 sq mi |
| Max Discharge | 250 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | DOI BLM |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Not Rated |
| Last Inspection | 07/07/2015 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | AZ20029 |
| Federal ID | AZ20029 |
| More Info | State Dam Safety Program |