Publication Summary

Low flow water quality information was collected at three locations on the upper Snoqualmie River from June-September 1991. The three locations were the North Fork Snoqualmie River near Ellisville, the Middle Fork of the Snoqualmie River near Ellisville, and the South Fork of the Snoqualmie River at North Bend. Information from these stations will be used to develop a water quality-based permit for planned wastewater treatment plant expansion. In general, the water quality on the North, Middle, and South Forks of the Snoqualmie River during low flow conditions was very good with only minor water quality criteria violations. The only area of possible concern was summer temperature levels on the North and Middle Forks.