Sacramento

Scouting trip to evaluate access situation at the put-in for Box Canyon.

Great news! Siskiyou Co now has the flow out of Box Canyon dam online at;
www.co.siskiyou.ca.us/GS/docs/Box Canyon/FlowRate.pdf
If this link doesn't work dreamflows has one on the Box Canyon notes page.
Like everyone else who frequents this run I've always used the stick gauge to determine the flow and it will take some time to find the correlation between the two.
I'll guess that if it's over 450cfs you are more than good to go

This run is a class 4 classic and one of my favorites. It's just off I-5 and if you're driving though in season it makes for a fun paddling diversion. It is tough to figure out if it's running by using the Sacramento @ Delta gauge as a guide as it is close to 40 miles downstream from the put-in. And there are way to many variables to come up with a simple formula using that gauge as a guide. A good rule of thumb is; as the season progresses the flow in box canyon will be a ever increasing percentage of the total flow at the gauge. In season paddlers will often post the height of the Cantara Gauge on Dreamflows too (The Cantara guage is the stick gauge at the end of Box Canyon on river left). It's a good bet that it will be running late March thru May. Jefferson State Creeking has an excellent write-up on the run with pictures, logistics.