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Hydrology/Streamflow
Streamflows in the Snoqualmie River and its tributaries are typical of streams in western Washington. Flow levels peak in the winter as a response to rainfall, and typically peak again in the early summer as a response to snowmelt in the upper elevation areas. Streamflows are at their lowest levels during the late summer and early fall.
Streamflow in the upper Snoqualmie River is gauged at a number of locations, and a good historical record is available for Snoqualmie Falls dating to the late 1800's. :
Middle Fork Snoqualmie: 12.1413.00
North Fork Snoqualmie: 12.1420.00
Snoqualmie River at Snoqualmie Falls: 12.1445.00
Snoqualmie River at Carnation: 12.1490.00
Snoqualmie River (mouth) at Monroe: 12.1508.00
Tolt River: 12.1485.00
Boxley Creek: 12.1493.00
Raging River: 12.1455.00
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©2003-2007 Golder Associates
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