Detention Pond A
Detention Pond A is an earth dam located in Solano County, California, built in 1989. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Detention Pond A
The primary purpose of Detention Pond A 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 City Of Dixon (local government). It impounds the Offstream.
The dam stands 15 feet tall and stretches 3,700 feet across, creates a reservoir covering 87 acres, has a maximum storage capacity of 737 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1989, the structure is 37 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 12/01/2025.
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Location
| State | California |
| County | Solano |
| River/Stream | Offstream |
| Coordinates | 38.42400, -121.83390 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Height | 15 ft |
| Dam Length | 3,700 ft |
| Year Completed | 1989 (37 years old) |
Storage & Hydraulics
| NID Storage | 737 acre-ft |
| Max Storage | 737 acre-ft |
| Surface Area | 87 acres |
| Drainage Area | 2 sq mi |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | City of Dixon |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 12/01/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CA01476 |
| Federal ID | CA01476 |
| More Info | State Dam Safety Program |