Heath Reservoir
Heath Reservoir is an earth dam located in Lassen County, California, built in 1965. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Heath Reservoir
The primary purpose of Heath Reservoir 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 Lee Nobmann (private). It impounds the Slate Creek.
The dam stands 45 feet tall and stretches 1,620 feet across, creates a reservoir covering 448 acres, has a maximum storage capacity of 8,650 acre-feet, and collects water from a drainage area of 21 square miles. Completed in 1965, 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 06/11/2025.
At 45 feet, this dam is taller than 91% of dams nationwide.
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Location
| State | California |
| County | Lassen |
| River/Stream | Slate Creek |
| Coordinates | 40.83620, -120.78370 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 45 ft |
| Dam Height | 45 ft |
| Dam Length | 1,620 ft |
| Year Completed | 1965 (61 years old) |
Storage & Hydraulics
| NID Storage | 8,650 acre-ft |
| Max Storage | 8,650 acre-ft |
| Surface Area | 448 acres |
| Drainage Area | 21 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Lee Nobmann |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/11/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA00525 |
| Federal ID | CA00525 |
| More Info | State Dam Safety Program |