Productive fishing is often found at changes in the stream's structure. Key spots include the heads and tails of pools, where trout station to feed on food funneled by the current. Riffles that transition into deeper runs are excellent for nymphing. Undercut banks, especially those with overhanging vegetation or roots, provide cover for larger fish. Any significant drop-offs, submerged logs, or large boulders that create current breaks and depth variation are always worth thorough exploration.