There are quite a few put in and take outs on the cowlitz, from the barrier dam to I5 there put ins and take outs about every 6 miles, from there down I dont know. If the water is up like 8500cfs it can be very tough to row your drift boat, like RT says try somthing easier first, unless your into dents in your boat or worse. Hope this helps, also the cowlitz likes to eat anchors so watch where you drop it, there is also a lot of sled traffic so watch out, some are nice and a few arnt. good luck