Although riprap holds bass throughout the year, it is especially productive during the cold months. One reason for this is that the rocks hold heat on sunny days, and bass stay close so they can soak up the warmth. Many riprap banks also drop sharply into deep water. This allows bass to move from the depths to the sun-warmed rocks with minimal effort. This saves precious energy when the water is cold and a bass’s metabolism is sluggish. Food is also abundant on riprap banks. Crayfish feel right at home in the many nooks and crannies, and baitfish eat the algae that grows on the rocks. The most productive riprap banks line causeways that cross over a creek or river channel. The channel serves as a highway for bass when they migrate from the depths to the shallows and back to deep water.