Trout Stream Therapy is a fully illustrated field guide to improving trout habitat in streams damaged by human activities associated with agriculture, forestry, and urbanization. Over the past four decades state and federal resource management agencies in the midwestern region have devised, tested, and refined a variety of techniques intended to restore healthy living conditions for trout. Leading the way in this regional effort has been the innovative and aggressive program of the Wisconsin Department of Natural Resouces. Robert L. Hunt, during his thirty-three years as a research biologist with the Wisconsin DNR, has carried out many of the pioneering field evaluations of the techniques developed to reestablish healthy wild trout populations and improve the sport fisheries that depend on those populations. Trout Stream Therapy provides twenty-one of the most up-to-date, successful, field-tested techniques applicable not only to midwestern streams, but also to physically similar streams elsewhere in the United States and in other countries. Professional fisheries biologists and administrators responsible for rehabilitating trout habitats will find this manual an invaluable reference in the field and in the office. The many sketches and color photographs illustrating these techniques will be particularly helpful to those who are interested in restoring trout streams but lack scientific training.