Samish Wd Sewage Lagoons
Samish Wd Sewage Lagoons is an earth dam located in Skagit County, Washington, built in 1974. It carries a Significant hazard potential classification and has a fair condition assessment.
About Samish Wd Sewage Lagoons
Samish Wd Sewage Lagoons is a dam in Skagit, Washington. The dam is owned by Samish Water District (public utility). It impounds the Offstream - Friday Cr..
The dam stands 8 feet tall and stretches 2,400 feet across, creates a reservoir covering 8 acres, and has a maximum storage capacity of 19 acre-feet. Completed in 1974, 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 07/24/2020.
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Location
| State | Washington |
| County | Skagit |
| River/Stream | Offstream - Friday Cr. |
| Coordinates | 48.64363, -122.36896 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 8 ft |
| Dam Length | 2,400 ft |
| Year Completed | 1974 (52 years old) |
Storage & Hydraulics
| NID Storage | 19 acre-ft |
| Max Storage | 19 acre-ft |
| Normal Storage | 9 acre-ft |
| Surface Area | 8 acres |
Ownership & Safety
| Purpose | Other |
| Owner | Samish Water District |
| Owner Type | Public Utility |
| Hazard Classification | Significant |
| Condition Assessment | Fair |
| Last Inspection | 07/24/2020 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | WA01990 |
| Federal ID | WA01990 |
| More Info | State Dam Safety Program |