The concept of deep water can mean different things to different people. It also can be different for different fish. In the shallow, rocky Susquehanna River, four feet can be considered a drop-off. If there is one principle I have learned after decades of fishing, it is the fact that big fish are never far from deep water.
Deep water is considered prime, fish holding structure.
A single, physical element, however, may not be present other than depth. Let us weave fishing canyon reservoirs into this conversation because they are an excellent example of deep water. Raystown Lake qualifies as a canyon opportunity. If you are a trout or striper fisherman, deep, long, clear, serpentine reservoirs are a force to be reckoned with. Many of our newest impoundments are canyon and serpentine.