Dick Week
Dick Week is an earth dam located in Napa County, California, built in 1955. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Dick Week
The primary purpose of Dick Week 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 70 feet tall and stretches 1,050 feet across, creates a reservoir covering 129 acres, and has a maximum storage capacity of 3,140 acre-feet. Completed in 1955, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. 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 01/30/2025.
At 70 feet, this dam is taller than 96% of all dams in the United States.
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Location
| State | California |
| County | Napa |
| River/Stream | Tr Pope Creek |
| Coordinates | 38.65030, -122.41330 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 70 ft |
| Dam Height | 70 ft |
| Dam Length | 1,050 ft |
| Year Completed | 1955 (71 years old) |
Storage & Hydraulics
| NID Storage | 3,140 acre-ft |
| Max Storage | 3,140 acre-ft |
| Surface Area | 129 acres |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Juliana Mutual Water Company |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 01/30/2025 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CA00585 |
| Federal ID | CA00585 |
| More Info | State Dam Safety Program |