D'agostini
D'agostini is an earth dam located in El Dorado County, California, built in 1950. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About D'agostini
The primary purpose of D'agostini 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 D'agostini Family Ranch, Inc. (private). It impounds the Spanish Creek.
The dam stands 32 feet tall and stretches 710 feet across, creates a reservoir covering 32 acres, has a maximum storage capacity of 355 acre-feet, and collects water from a drainage area of 5 square miles. Completed in 1950, the structure is well-established, with more than 75 years of service.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 11/13/2025.
At 32 feet, this dam is taller than 76% of dams nationwide.
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Location
| State | California |
| County | El Dorado |
| River/Stream | Spanish Creek |
| Coordinates | 38.58550, -120.73780 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 32 ft |
| Dam Height | 32 ft |
| Dam Length | 710 ft |
| Year Completed | 1950 (76 years old) |
Storage & Hydraulics
| NID Storage | 355 acre-ft |
| Max Storage | 355 acre-ft |
| Surface Area | 32 acres |
| Drainage Area | 5 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | D'Agostini Family Ranch, Inc. |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 11/13/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA00610 |
| Federal ID | CA00610 |
| More Info | State Dam Safety Program |