Snoqualmie Pass Pud Sewage Lagoon No 1

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.

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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Low Hazard ConditionEmergency Action Plan: Not Required

Location

StateWashington
CountyKittitas
Nearest CityEaston
River/StreamTr-lake Keechelus-offstream
Coordinates47.38608, -121.39121

Physical Characteristics

Dam TypeEarth
NID Height23 ft
Dam Length1,110 ft
Year Completed1982 (44 years old)

Storage & Hydraulics

NID Storage54 acre-ft
Max Storage54 acre-ft
Normal Storage22 acre-ft
Surface Area8 acres
Drainage Area0 sq mi
Max Discharge6 cfs

Ownership & Safety

PurposeOther
OwnerSnoqualmie Pass Utility District
Owner TypePublic Utility
Hazard ClassificationLow
Last Inspection11/19/2015
Emergency Action PlanNot Required

Identifiers

NID IDWA00472
Federal IDWA00472
More InfoState Dam Safety Program

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