Haller Dam is an earth dam located in Clallam County, Washington, built in 1945. It carries a Low hazard potential classification.
Dam profile
NID height · 45 ft45 ft tall and 150 ft long, taller than 90% 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 Haller Dam
The primary purpose of Haller Dam is irrigation. The dam stores and diverts water for agricultural irrigation, supporting farming operations in the surrounding area. The dam is owned by Garysmith (private). It impounds the Dungeness River-offstream near Sequim.
The dam stands 45 feet tall and stretches 150 feet across, creates a reservoir covering 12 acres, has a maximum storage capacity of 20 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1945, 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.
At 45 feet, this dam is taller than 90% of dams nationwide.
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Location
| State | Washington |
| County | Clallam |
| Nearest City | Sequim |
| River/Stream | Dungeness River-offstream |
| Coordinates | 48.03803, -123.15320 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 45 ft |
| Dam Length | 150 ft |
| Year Completed | 1945 (81 years old) |
Storage & Hydraulics
| NID Storage | 20 acre-ft |
| Max Storage | 20 acre-ft |
| Normal Storage | 12 acre-ft |
| Surface Area | 12 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 4 cfs |
Ownership & Safety
| Purpose | Irrigation |
| Owner | Garysmith |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WA01504 |
| Federal ID | WA01504 |
| More Info | State Dam Safety Program |