York Hill
York Hill is an earth dam located in Colusa County, California, built in 1952. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About York Hill
The primary purpose of York Hill 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 Michael Townzen, Matthew Townzen, And Lucille Penning (private). It impounds the Tr Bear Creek.
The dam stands 38 feet tall and stretches 670 feet across, creates a reservoir covering 17 acres, has a maximum storage capacity of 245 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1952, 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 07/23/2025.
At 38 feet, this dam is taller than 85% of dams nationwide.
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Location
| State | California |
| County | Colusa |
| River/Stream | Tr Bear Creek |
| Coordinates | 39.14000, -122.45010 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 38 ft |
| Dam Height | 38 ft |
| Dam Length | 670 ft |
| Year Completed | 1952 (74 years old) |
Storage & Hydraulics
| NID Storage | 245 acre-ft |
| Max Storage | 245 acre-ft |
| Surface Area | 17 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Michael Townzen, Matthew Townzen, and Lucille Penning |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/23/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA00554 |
| Federal ID | CA00554 |
| More Info | State Dam Safety Program |