College Hill Reservoir
College Hill Reservoir is an other dam located in Grays Harbor County, Washington, built in 1899. It carries a High hazard potential classification and has a poor condition assessment.
About College Hill Reservoir
The primary purpose of College Hill Reservoir 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 Little Hoquiam R. - Offstream near Hoquiam.
The dam stands 31 feet tall and stretches 1,000 feet across, creates a reservoir covering 1 acres, has a maximum storage capacity of 25 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1899, the structure is over a century 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 poor, meaning the dam has recognized safety deficiencies that require remediation to address risks. An emergency action plan is in place for this dam. The most recent inspection on record was 03/21/2018. That was 8 years ago, which is on the longer end for a high-hazard structure.
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 Washington 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 | Washington |
| County | Grays Harbor |
| Nearest City | Hoquiam |
| River/Stream | Little Hoquiam R. - Offstream |
| Coordinates | 46.98788, -123.89538 |
Physical Characteristics
| Dam Type | Other |
| NID Height | 31 ft |
| Dam Length | 1,000 ft |
| Year Completed | 1899 (127 years old) |
Storage & Hydraulics
| NID Storage | 25 acre-ft |
| Max Storage | 25 acre-ft |
| Normal Storage | 23 acre-ft |
| Surface Area | 1 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Water Supply |
| Owner | Hoquiam City |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Last Inspection | 03/21/2018 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WA00663 |
| Federal ID | WA00663 |
| More Info | State Dam Safety Program |