Introduction -- The Klamath Basin -- Formulating And Applying Models In Ecosystem Management -- Natural Flow Study -- Instream Flow Study -- Applying Science To Management -- Conclusions And Recommendations. Committee On Hydrology, Ecology, And Fishes Of The Klamath River, Board On Environmental Studies And Toxicology, Water Science And Technology Board, Division On Earth And Life Studies, National Research Council Of The National Academies. Includes Bibliographical References (p. 226-242). Also Available In Open Book Format Via The National Academies Press Home Page.