Snoqualmie Pass PUD Sewage Lagoon No 1 is an earth dam located in Kittitas County, Washington, built in 1982. It carries a Low hazard potential classification.
Dam profile
NID height · 23 ft23 ft tall and 1,110 ft long. 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 Snoqualmie Pass PUD Sewage Lagoon No 1
Snoqualmie Pass PUD Sewage Lagoon No 1 is a dam in Kittitas, Washington. The dam is owned by Snoqualmie Pass Utility District (public utility). It impounds the Tr-lake Keechelus-offstream near Easton.
The dam stands 23 feet tall and stretches 1,110 feet across, creates a reservoir covering 8 acres, has a maximum storage capacity of 54 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1982, the structure is 44 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. The most recent inspection on record was 11/19/2015. That was over 10 years ago.
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Location
| State | Washington |
| County | Kittitas |
| Nearest City | Easton |
| River/Stream | Tr-lake Keechelus-offstream |
| Coordinates | 47.38608, -121.39121 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 23 ft |
| Dam Length | 1,110 ft |
| Year Completed | 1982 (44 years old) |
Storage & Hydraulics
| NID Storage | 54 acre-ft |
| Max Storage | 54 acre-ft |
| Normal Storage | 22 acre-ft |
| Surface Area | 8 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 6 cfs |
Ownership & Safety
| Purpose | Other |
| Owner | Snoqualmie Pass Utility District |
| Owner Type | Public Utility |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 11/19/2015 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | WA00472 |
| Federal ID | WA00472 |
| More Info | State Dam Safety Program |