Olga Detention Dam
Olga Detention Dam is a gravity dam located in Cochise County, Arizona, built in 1940. It carries a Low hazard potential classification and has a poor condition assessment.
About Olga Detention Dam
The primary purpose of Olga 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 near Solomon, Az.
The dam stands 25 feet tall and stretches 1,300 feet across, creates a reservoir covering 23 acres, has a maximum storage capacity of 151 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1940, the structure is well-established, with more than 75 years of service.
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. Its condition is rated poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. The most recent inspection on record was 06/05/2007. That was over 18 years ago.
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Location
| State | Arizona |
| County | Cochise |
| Nearest City | Solomon, Az |
| River/Stream | San Simon River |
| Coordinates | 32.36092, -109.33657 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 25 ft |
| Dam Length | 1,300 ft |
| Year Completed | 1940 (86 years old) |
Storage & Hydraulics
| NID Storage | 151 acre-ft |
| Max Storage | 151 acre-ft |
| Normal Storage | 90 acre-ft |
| Surface Area | 23 acres |
| Drainage Area | 2 sq mi |
| Max Discharge | 300 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | DOI BLM |
| Owner Type | Federal |
| Hazard Classification | Low |
| Condition Assessment | Poor |
| Last Inspection | 06/05/2007 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | AZ20017 |
| Federal ID | AZ20017 |
| More Info | State Dam Safety Program |