I'll be in Northern California, mostly on the North Fork of the American River. And I'm a sissy when it comes to cold water lol. This is the only info it gives:
The NFAR has been running @ 54 degrees F since the late 70's. With a ~ 1/4" thick beavertail full wet suit with hood and booties I would last for four hours till my body's core temperature fell and then I was done for the day. Stopping for 2 hours out in the hot sun and going back in does not work as the core is still too cold.
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