11th Street Jump (6-8" stop blocks)

After passing under S.13th Street (you'll see a pedestrian bridge crossing where S.11th Street dead ends either side of the river), a short 'hydraulic jump' will be encountered. This one is very minor, formed by what look essentially like parking-lot stop-blocks in the cement-ditch-bottom. At flows in the 400-600 cfs range, this forms a sweet-looking V-wave which could allow catch-on-the-fly one-shot surfs.