Boatable flows in this reach will start in winter, extend through spring and into early to mid summer. There is a USGS gauge is at Pohono Bridge in Yosemite Valley, about 10 miles upstream. There are many small tributaries in between, so in the winter and spring, flows will be higher in this reach than shown on the Pohono gauge. Dreamflows calculates an estimate for the flow at Redbud, the take out for this section. Generally this is a pretty accurate estimate, but of course it could be high or low by unpredictable amounts at any time. There is a staff gauge on the bridge at Redbud by which you can document the actual level. We do not yet have a rating table or translation to cfs for this gauge.