Sol Duc River - Streamflow

Streamflow

The discharge, or streamflow of the Sol Duc River has considerable seasonal variation. According to George Wuerthner, the river's average winter flow is 104.75 cubic metres per second (3,699 cu ft/s) but its average summer flow is only 12.74 m3/s (450 cu ft/s). Wuerthner cites slightly different annual streamflow figures than the Washington Department of Ecology. Also, Wuerthner uses metric units while Ecology uses imperial units. Wuerthner says the mean annual flow is 37 m3/s (1,300 cu ft/s), Ecology says it is 1,270 cu ft/s (36 m3/s). The maximum and minimum recorded discharges were, according to Wuerthner, 588.85 m3/s (20,795 cu ft/s) and 4.39 m3/s (155 cu ft/s). According to Ecology they were 19,200 cu ft/s (540 m3/s) and 214 cu ft/s (6.1 m3/s).