Well With The Experience That I Have Had When The Water Is Low Is That They Will Go To The The Deeper Holes, Lets Say You Have 10 Feet Of Water They Will Still Go To That Deeper Hole. I Fish The Chippewa Here And It Is Only About A Foot Deep Now With The Drought, But If I Was Willing To Walk Or Push A Boat I Would Still Find The Fish In Deeper Holes Lets Say 5 Feet Or More, That Is The Best I Can Tell Ya Buddy.