Clementia is an earth dam located in Sacramento County, California, built in 1976. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 33 ft33 ft tall and 1,300 ft long, taller than 76% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Clementia
The primary purpose of Clementia 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 Rancho Murieta Community Services District (public utility). It impounds the Tr Cosumnes Rv.
The dam stands 33 feet tall and stretches 1,300 feet across, creates a reservoir covering 70 acres, has a maximum storage capacity of 850 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1976, the structure is 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 11/20/2025.
At 33 feet, this dam is taller than 76% of dams nationwide.
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Location
| State | California |
| County | Sacramento |
| River/Stream | Tr Cosumnes Rv |
| Coordinates | 38.50170, -121.07020 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 33 ft |
| Dam Height | 33 ft |
| Dam Length | 1,300 ft |
| Year Completed | 1976 (50 years old) |
Storage & Hydraulics
| NID Storage | 850 acre-ft |
| Max Storage | 850 acre-ft |
| Surface Area | 70 acres |
| Drainage Area | 2 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Rancho Murieta Community Services District |
| Owner Type | Public Utility |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 11/20/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CA01119 |
| Federal ID | CA01119 |
| More Info | State Dam Safety Program |