Productive areas are found where the creek's flow is altered by natural structure. Deep pools located downstream of riffles and runs are consistent fish-holding areas. The tails of these pools, where shallow, faster water meets deeper water, are excellent feeding lanes. Undercut banks along outside bends and areas with substantial logjams or large rock formations provide cover and ambush points for larger fish. Confluences with smaller tributaries often create unique habitat and can be particularly productive.