Lagoon Valley County Park
Lagoon Valley County Park is an earth dam located in Solano County, California, built in 1981. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Lagoon Valley County Park
The primary purpose of Lagoon Valley County Park is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by City Of Vacaville (local government). It impounds the Tr Laguna Creek.
The dam stands 13 feet tall and stretches 5,200 feet across, creates a reservoir covering 105 acres, has a maximum storage capacity of 780 acre-feet, and collects water from a drainage area of 2 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. 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 09/17/2025.
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Location
| State | California |
| County | Solano |
| River/Stream | Tr Laguna Creek |
| Coordinates | 38.33430, -122.01310 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 13 ft |
| Dam Height | 13 ft |
| Dam Length | 5,200 ft |
| Year Completed | 1981 (45 years old) |
Storage & Hydraulics
| NID Storage | 780 acre-ft |
| Max Storage | 780 acre-ft |
| Surface Area | 105 acres |
| Drainage Area | 2 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | City of Vacaville |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/17/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CA01315 |
| Federal ID | CA01315 |
| More Info | State Dam Safety Program |