Andrew Cademartori
Andrew Cademartori is an earth dam located in Calaveras County, California, built in 1983. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Andrew Cademartori
Andrew Cademartori is a dam in Calaveras, California. The dam is owned by Union Public Utility District (public utility). It impounds the Seasonal Stream near Murphys.
The dam stands 80 feet tall and stretches 520 feet across, creates a reservoir covering 6 acres, has a maximum storage capacity of 142 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1983, the structure is 43 years old.
This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. 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 05/28/2025.
At 80 feet, this dam is taller than 97% of all dams in the United States.
Living Downstream
If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The California dam safety program can provide more specific information about emergency planning for this structure.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | California |
| County | Calaveras |
| Nearest City | Murphys |
| River/Stream | Seasonal Stream |
| Coordinates | 38.14790, -120.43130 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 80 ft |
| Dam Height | 80 ft |
| Dam Length | 520 ft |
| Year Completed | 1983 (43 years old) |
Storage & Hydraulics
| NID Storage | 142 acre-ft |
| Max Storage | 142 acre-ft |
| Surface Area | 6 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Other |
| Owner | Union Public Utility District |
| Owner Type | Public Utility |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/28/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CA01274 |
| Federal ID | CA01274 |
| More Info | State Dam Safety Program |