Dutcher Creek
Dutcher Creek is an earth dam located in Sonoma County, California, built in 1992. It carries a High hazard potential classification and has a satisfactory condition assessment.
About Dutcher Creek
The primary purpose of Dutcher Creek 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 E & J Gallo Winery (private). It impounds the Tr Borrelli Creek near Asti.
The dam stands 43 feet tall and stretches 790 feet across, creates a reservoir covering 9 acres, has a maximum storage capacity of 186 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1992, the structure is 34 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. An emergency action plan is in place for this dam. The most recent inspection on record was 02/02/2025.
At 43 feet, this dam is taller than 89% of dams nationwide.
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 | Sonoma |
| Nearest City | Asti |
| River/Stream | Tr Borrelli Creek |
| Coordinates | 38.75730, -122.99300 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 43 ft |
| Dam Height | 43 ft |
| Dam Length | 790 ft |
| Year Completed | 1992 (34 years old) |
Storage & Hydraulics
| NID Storage | 186 acre-ft |
| Max Storage | 186 acre-ft |
| Surface Area | 9 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | E & J Gallo Winery |
| Owner Type | Private |
| Hazard Classification | High |
| Condition Assessment | Satisfactory |
| Last Inspection | 02/02/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CA01362 |
| Federal ID | CA01362 |
| More Info | State Dam Safety Program |