Sea Horse Ranch Dike
Sea Horse Ranch Dike is an earth dam located in Grays Harbor County, Washington, built in 1961. It carries a Low hazard potential classification.
About Sea Horse Ranch Dike
Sea Horse Ranch Dike is a dam in Grays Harbor, Washington. The dam is owned by Grays Harbor Audobon Society (private). It impounds the Tr-gillis Slough.
The dam stands 15 feet tall and stretches 165 feet across, creates a reservoir covering 75 acres, has a maximum storage capacity of 75 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1961, the structure is well into its service life at over 50 years old.
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.
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 |
| River/Stream | Tr-gillis Slough |
| Coordinates | 47.04259, -124.04148 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 15 ft |
| Dam Length | 165 ft |
| Year Completed | 1961 (65 years old) |
Storage & Hydraulics
| NID Storage | 75 acre-ft |
| Max Storage | 75 acre-ft |
| Normal Storage | 75 acre-ft |
| Surface Area | 75 acres |
| Drainage Area | 0 sq mi |
Ownership & Safety
| Purpose | Other |
| Owner | Grays Harbor Audobon Society |
| Owner Type | Private |
| Hazard Classification | Low |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WA00100 |
| Federal ID | WA00100 |
| More Info | State Dam Safety Program |