El Dorado Hills
El Dorado Hills is an earth dam located in El Dorado County, California, built in 1980. It carries a High hazard potential classification and has a satisfactory condition assessment.
About El Dorado Hills
The primary purpose of El Dorado Hills 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 El Dorado Irrigation District (public utility). It impounds the Offstream near El Dorado Hills.
The dam stands 31 feet tall and stretches 2,340 feet across, creates a reservoir covering 23 acres, has a maximum storage capacity of 215 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1980, the structure is 46 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. Notably, no emergency action plan is currently on file for this high-hazard dam. The most recent inspection on record was 03/05/2025.
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 | El Dorado |
| Nearest City | El Dorado Hills |
| River/Stream | Offstream |
| Coordinates | 38.63900, -121.05860 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 31 ft |
| Dam Height | 31 ft |
| Dam Length | 2,340 ft |
| Year Completed | 1980 (46 years old) |
Storage & Hydraulics
| NID Storage | 215 acre-ft |
| Max Storage | 215 acre-ft |
| Surface Area | 23 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | El Dorado Irrigation District |
| Owner Type | Public Utility |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 03/05/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA01176 |
| Federal ID | CA01176 |
| More Info | State Dam Safety Program |