Green Valley
Green Valley is an earth dam located in Mariposa County, California, built in 1957. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Green Valley
The primary purpose of Green Valley 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 Traian And Alina Micu (private). It impounds the Smith Creek.
The dam stands 33 feet tall and stretches 1,040 feet across, creates a reservoir covering 20 acres, has a maximum storage capacity of 240 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1957, 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 05/28/2025.
At 33 feet, this dam is taller than 78% of dams nationwide.
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Location
| State | California |
| County | Mariposa |
| River/Stream | Smith Creek |
| Coordinates | 37.77640, -120.15100 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 33 ft |
| Dam Height | 33 ft |
| Dam Length | 1,040 ft |
| Year Completed | 1957 (69 years old) |
Storage & Hydraulics
| NID Storage | 240 acre-ft |
| Max Storage | 240 acre-ft |
| Surface Area | 20 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Traian and Alina Micu |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/28/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA00700 |
| Federal ID | CA00700 |
| More Info | State Dam Safety Program |