West Fork Dam
West Fork Dam is a gravity dam located in Grays Harbor County, Washington, built in 1956. It carries a Significant hazard potential classification and has a fair condition assessment.
About West Fork Dam
The primary purpose of West Fork Dam 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 Hoquiam City (local government). It impounds the West Fk. Hoquiam River near Hoquiam.
The dam stands 16 feet tall and stretches 80 feet across, has a maximum storage capacity of 24 acre-feet, and collects water from a drainage area of 8 square miles. Completed in 1956, 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 fair — the dam has minor deficiencies that are being addressed or do not pose an immediate safety threat. An emergency action plan is in place for this dam. The most recent inspection on record was 06/28/2023.
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Location
| State | Washington |
| County | Grays Harbor |
| Nearest City | Hoquiam |
| River/Stream | West Fk. Hoquiam River |
| Coordinates | 47.06925, -123.92907 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 16 ft |
| Dam Length | 80 ft |
| Year Completed | 1956 (70 years old) |
Storage & Hydraulics
| NID Storage | 24 acre-ft |
| Max Storage | 24 acre-ft |
| Normal Storage | 7 acre-ft |
| Drainage Area | 8 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Hoquiam City |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 06/28/2023 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WA01791 |
| Federal ID | WA01791 |
| More Info | State Dam Safety Program |