Summer 2017 Sandy River Fieldwork

This past August, three of us (Mark Fonstad, Aaron Zettler-Mann, and James Major) spent three days on the lower Sandy River between Mt. Hood and Portland. We were performing an experiment: how many river miles is it possible to float in a few days while at the same time flying a drone to collect very high resolution imagery from which channel sediment data and morphology can be extracted? We took the department’s cataraft, and while it is the ideal platform for this kind of work, the water levels in the Sandy River were low, and there was a fair amount of boat-dragging necessary. Nevertheless, we were able to cover about 40 km in those three days, and we collected 2-cm resolution imagery over almost every river bar along this section of the river. The Sandy River is geomorphically highly active, and is well known for the Marmot Dam removal higher in the watershed several years ago.