Lake Chabot
Lake Chabot is an earth dam located in Solano County, California, built in 1870. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Lake Chabot
Lake Chabot is a dam in Solano, California. The dam is owned by City Of Vallejo (local government). It impounds the Blue Rock Sprgs Crk near City Of Vallejo.
The dam stands 47 feet tall and stretches 395 feet across, creates a reservoir covering 61 acres, has a maximum storage capacity of 504 acre-feet, and collects water from a drainage area of 6 square miles. Completed in 1870, the structure is one of the older dams in the region, with over a century and a half 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. 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 09/30/2025.
At 47 feet, this dam is taller than 92% 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 California 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 | California |
| County | Solano |
| Nearest City | City Of Vallejo |
| River/Stream | Blue Rock Sprgs Crk |
| Coordinates | 38.14050, -122.23960 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 47 ft |
| Dam Height | 47 ft |
| Dam Length | 395 ft |
| Year Completed | 1870 (156 years old) |
Storage & Hydraulics
| NID Storage | 504 acre-ft |
| Max Storage | 504 acre-ft |
| Surface Area | 61 acres |
| Drainage Area | 6 sq mi |
Ownership & Safety
| Purpose | Other |
| Owner | City of Vallejo |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/30/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CA00145 |
| Federal ID | CA00145 |
| More Info | State Dam Safety Program |