Rhinedollar
Rhinedollar is a rockfill dam located in Mono County, California, built in 1927. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Rhinedollar
The primary purpose of Rhinedollar is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. The dam is owned by Southern California Edison Company (private). It impounds the Lee Vining Creek near Lee Vining.
The dam stands 18 feet tall and stretches 437 feet across, creates a reservoir covering 61 acres, and has a maximum storage capacity of 749 acre-feet. Completed in 1927, the structure is well-established, with more than 75 years of service.
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 08/21/2025.
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 | Mono |
| Nearest City | Lee Vining |
| River/Stream | Lee Vining Creek |
| Coordinates | 37.93510, -119.23260 |
Physical Characteristics
| Dam Type | Rockfill |
| NID Height | 18 ft |
| Dam Height | 18 ft |
| Dam Length | 437 ft |
| Year Completed | 1927 (99 years old) |
Storage & Hydraulics
| NID Storage | 749 acre-ft |
| Max Storage | 749 acre-ft |
| Normal Storage | 749 acre-ft |
| Surface Area | 61 acres |
| Max Discharge | 1,060 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner | Southern California Edison Company |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 08/21/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CA00457 |
| Federal ID | CA00457 |
| More Info | State Dam Safety Program |