Spoils Pond Dam is an earth dam located in Grays Harbor County, Washington, built in 1970. It carries a Significant hazard potential classification.
Dam profile
NID height · 14 ft14 ft tall. 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 Spoils Pond Dam
Spoils Pond Dam is a dam in Grays Harbor, Washington. The dam is owned by Cosmo Specialty Fibers Inc. (private). It impounds the Grays Harbor-offstream near Aberdeen.
The dam stands 14 feet tall, creates a reservoir covering 260 acres, has a maximum storage capacity of 365 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1970, 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.
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Location
| State | Washington |
| County | Grays Harbor |
| Nearest City | Aberdeen |
| River/Stream | Grays Harbor-offstream |
| Coordinates | 46.95315, -123.83461 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 14 ft |
| Year Completed | 1970 (56 years old) |
Storage & Hydraulics
| NID Storage | 365 acre-ft |
| Max Storage | 365 acre-ft |
| Normal Storage | 260 acre-ft |
| Surface Area | 260 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 2 cfs |
Ownership & Safety
| Purpose | Other |
| Owner | Cosmo Specialty Fibers Inc. |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Not assessed |
| Emergency Action Plan | No |
Identifiers
| NID ID | WA00552 |
| Federal ID | WA00552 |
| More Info | State Dam Safety Program |