Clarke
Clarke is an earth dam located in Modoc County, California, built in 1939. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Clarke
The primary purpose of Clarke 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 Juanita C. Gardner (private). It impounds the Tr Nfk Pit Rv.
The dam stands 17 feet tall and stretches 810 feet across, creates a reservoir covering 12 acres, has a maximum storage capacity of 70 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1939, the structure is well-established, with more than 75 years of service.
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 04/23/2025.
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Location
| State | California |
| County | Modoc |
| River/Stream | Tr Nfk Pit Rv |
| Coordinates | 41.69060, -120.38030 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 17 ft |
| Dam Height | 17 ft |
| Dam Length | 810 ft |
| Year Completed | 1939 (87 years old) |
Storage & Hydraulics
| NID Storage | 70 acre-ft |
| Max Storage | 70 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Juanita C. Gardner |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 04/23/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA00493 |
| Federal ID | CA00493 |
| More Info | State Dam Safety Program |