The most comprehensive book on how current affects fly fishing, the good and bad of drag, which casts and techniques to use when, and much moreNymph fishing and accounting for variations in current speed at different depthsHow even small movements of water can change your fly's movement, and what to do about itThe effects of turbulence on water temperature and oxygen contentHow mayflies, stoneflies, and midges are affected by the water in which they liveTrout's evolutionary and day-to-day responses to currentFishing drop-offs, midstream obstructions, and sweepers | Moving Water by Jason Randall, Hardcover | Indigo Chapters