Dolcini is an earth dam located in Marin County, California, built in 1949. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 35 ft35 ft tall and 440 ft long, taller than 80% of U.S. dams with a recorded height. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Dolcini
The primary purpose of Dolcini 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 John Dolcini (private). It impounds the Salmon Creek.
The dam stands 35 feet tall and stretches 440 feet across, creates a reservoir covering 8 acres, has a maximum storage capacity of 70 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1949, 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 12/11/2025.
At 35 feet, this dam is taller than 80% of dams nationwide.
Search for dams near your address to see all dams in your area with hazard classifications and safety data.
Location
| State | California |
| County | Marin |
| River/Stream | Salmon Creek |
| Coordinates | 38.15990, -122.70110 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 35 ft |
| Dam Height | 35 ft |
| Dam Length | 440 ft |
| Year Completed | 1949 (77 years old) |
Storage & Hydraulics
| NID Storage | 70 acre-ft |
| Max Storage | 70 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | John Dolcini |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 12/11/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA00593 |
| Federal ID | CA00593 |
| More Info | State Dam Safety Program |