Sempervirens
Sempervirens is an earth dam located in Santa Cruz County, California, built in 1951. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Sempervirens
Sempervirens is a dam in Santa Cruz, California. The dam is owned by California Department Of Parks And Recreation (state). It impounds the Sempervirens Creek.
The dam stands 42 feet tall and stretches 260 feet across, creates a reservoir covering 4 acres, has a maximum storage capacity of 78 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1951, the structure is well into its service life at over 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 06/30/2025.
At 42 feet, this dam is taller than 89% of dams nationwide.
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Location
| State | California |
| County | Santa Cruz |
| River/Stream | Sempervirens Creek |
| Coordinates | 37.18960, -122.20890 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 42 ft |
| Dam Height | 42 ft |
| Dam Length | 260 ft |
| Year Completed | 1951 (75 years old) |
Storage & Hydraulics
| NID Storage | 78 acre-ft |
| Max Storage | 78 acre-ft |
| Surface Area | 4 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Other |
| Owner | California Department of Parks and Recreation |
| Owner Type | State |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/30/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CA00013 |
| Federal ID | CA00013 |
| More Info | State Dam Safety Program |