There I go again, making up my own laws haha. I checked with my friend in Pa you are allowd to use any waterway for entrance or travel, even if by foot or hip wader.(He fishes several streams that run through private property, but as longas he stays in the creek, hes legal)But looks like different states have different laws in regards. I'd check with the state law first!
This is not 100% true. The water must be deemed navigable and listed as such. Otherwise its still tresspassing and if caught you would be subject to being fined. You'd have to go thru lengthy court battles to PROVE the historic use as a navigible water. For the majority of little creeks and such, they aren't defined as navigible waters, and to walk down the middle of them would be tresspassing.