Deer Creek is an earth dam located in Napa County, California, built in 1980. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 40 ft40 ft tall and 1,085 ft long, taller than 86% 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 Deer Creek
The primary purpose of Deer 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 Juliana Mutual Water Company (private). It impounds the Tr Pope Creek.
The dam stands 40 feet tall and stretches 1,085 feet across, creates a reservoir covering 5 acres, has a maximum storage capacity of 103 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1980, the structure is 46 years old.
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 01/30/2025.
At 40 feet, this dam is taller than 86% of dams nationwide.
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Location
| State | California |
| County | Napa |
| River/Stream | Tr Pope Creek |
| Coordinates | 38.65290, -122.42600 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 40 ft |
| Dam Height | 40 ft |
| Dam Length | 1,085 ft |
| Year Completed | 1980 (46 years old) |
Storage & Hydraulics
| NID Storage | 103 acre-ft |
| Max Storage | 103 acre-ft |
| Surface Area | 5 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Juliana Mutual Water Company |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 01/30/2025 |
| Emergency Action Plan | No |
Identifiers
| NID ID | CA01187 |
| Federal ID | CA01187 |
| More Info | State Dam Safety Program |