Jayne's Lake is an earth dam located in Mendocino County, California, built in 1985. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 70 ft70 ft tall and 650 ft long, taller than 96% of U.S. dams with a recorded height. Height is drawn to scale against a ten-story building, about 100 ft; the profile is a generic embankment section and the water level is illustrative.
About Jayne's Lake
Jayne's Lake is a dam in Mendocino, California. The dam is owned by Eden Valley Ranch, LLC (private). It impounds the Toney Creek.
The dam stands 70 feet tall and stretches 650 feet across, creates a reservoir covering 55 acres, and has a maximum storage capacity of 1,225 acre-feet. Completed in 1985, the structure is 41 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. The most recent inspection on record was 06/24/2025.
At 70 feet, this dam is taller than 96% of all dams in the United States.
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Location
| State | California |
| County | Mendocino |
| River/Stream | Toney Creek |
| Coordinates | 39.63190, -123.16870 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 70 ft |
| Dam Height | 70 ft |
| Dam Length | 650 ft |
| Year Completed | 1985 (41 years old) |
Storage & Hydraulics
| NID Storage | 1,225 acre-ft |
| Max Storage | 1,225 acre-ft |
| Surface Area | 55 acres |
Ownership & Safety
| Purpose | Other |
| Owner | Eden Valley Ranch, LLC |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/24/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA01262 |
| Federal ID | CA01262 |
| More Info | State Dam Safety Program |