Gage datum is arbitrary, and not tied in to sea level elevation. No other gage has operated at this site.
Annual yields are greater than sediment yields prior to the eruption.
Reach Description One channel at all stages. The channel makes a slight bend through the gage reach. The right bank is wooded and fairly stable. The left bank is a plateau of dredge spoils, composed of sand, gravel, and cobbles, and although not subject to overflow at high stages, is at risk of erosion. The stream bed is cobble and gravel, and is subject to scour and fill during periods of high flow.