Sanhedrin Ranch
Sanhedrin Ranch is an earth dam located in Glenn County, California, built in 1967. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Sanhedrin Ranch
Sanhedrin Ranch is a dam in Glenn, California. The dam is owned by Greg L. Risse, Trustee & Michelle L. Risse, Trustee (private). It impounds the Tr Stony Creek.
The dam stands 27 feet tall and stretches 510 feet across, creates a reservoir covering 15 acres, has a maximum storage capacity of 120 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1967, the structure is well into its service life at over 50 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 06/26/2025.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | California |
| County | Glenn |
| River/Stream | Tr Stony Creek |
| Coordinates | 39.61960, -122.59680 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 27 ft |
| Dam Height | 27 ft |
| Dam Length | 510 ft |
| Year Completed | 1967 (59 years old) |
Storage & Hydraulics
| NID Storage | 120 acre-ft |
| Max Storage | 120 acre-ft |
| Surface Area | 15 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Other |
| Owner | Greg L. Risse, Trustee & Michelle L. Risse, Trustee |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/26/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA00559 |
| Federal ID | CA00559 |
| More Info | State Dam Safety Program |