Camanche Dike No. 1
Camanche Dike No. 1 is an earth dam located in Calaveras County, California. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Camanche Dike No. 1
The primary purpose of Camanche Dike No. 1 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 East Bay Municipal Utility District (public utility). It impounds the Mokelumne River near Clements.
The dam stands 90 feet tall and stretches 6,000 feet across, creates a reservoir covering 7,600 acres, and has a maximum storage capacity of 417,000 acre-feet.
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 09/12/2023.
At 90 feet, this dam is taller than 98% 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 | Clements |
| River/Stream | Mokelumne River |
| Coordinates | 38.20710, -120.98510 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 90 ft |
| Dam Height | 90 ft |
| Dam Length | 6,000 ft |
Storage & Hydraulics
| NID Storage | 417,000 acre-ft |
| Max Storage | 417,000 acre-ft |
| Normal Storage | 417,000 acre-ft |
| Surface Area | 7,600 acres |
| Spillway Type | None |
Ownership & Safety
| Purpose | Water Supply |
| Owner | East Bay Municipal Utility District |
| Owner Type | Public Utility |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 09/12/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CA00173 |
| Federal ID | CA00173S001 |
| More Info | State Dam Safety Program |