Agree with Max and Brownstone.........
I'd say 95% of all my largest catches in the Bow, have come less than 5 feet from a bank or shore. Especially this time of year. I start (in muddy water) with an indicator and a two nymph rig, one nymph at 1 foot deep, and the other at 2 feet deep, and I fish this one foot or less away from the bank. Basically, when the Bow is at this flow (250+) there's a very small slack edge to it, but if you stay in that, your in the fish. Just one foot or less off the banks, and 2 feet to your deepest nymph. trust me. You'd be suprised to find out whats there!
Oh, and that's for MUD water. Once the vis goes to 2-3 feet, go about 5 feet off the bank at a depth of approx 3-5ft...