Gauge Description:

There is no gauge on the Suiattle but since this river is a tributary to the Sauk you can get an idea of what the flows are by checking the Sauk at Sauk gauge downstream of the confluence. Recommended flows are based on this gauge. Although the Suiattle represents approximately 40% of the flows on this gauge, the relationship changes over the course of the water year. Because the Suiattle is fed by glacier melt in late summer it will contribute a greater percentage of the flow to the Sauk during the summer months and somewhat less through the winter and early spring. You can estimate this relative contribution by also checking the Sauk above Whitechuck gauge which is upstream of the confluence with the Suiattle.