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LIST OF TABLES <br />1. Examples of recreation experiences used in flow - recreation studies ............. 11 <br />2. Examples of flow related "trip attributes" . ............................... 12 <br />3. River morphology adjustements due to lower flows on Alaska's Beaver Creek .... 24 <br />4. Categorization fo various evaluation methods ............................. 62 <br />5. Experience types and tolerances for boatability problems on Alaska's Birch Creek . 65 <br />6. Required flows to protect resources on Colorado's Dolores River .............. 77 <br />7. Comparison of recreation season lengths for 5 flow scenarios on the Dolores River 81 <br />LIST OF FIGURES <br />Note: Photographs indicated by italics. Photographer is given in parentheses. <br />Cover and Preface <br />Raft on Alaska's Talachulitna River (Bruce Talbot) <br />Boat dragging on Alaska's Gulkana River (Bo Shelby) <br />Running the upper part of the Gulkana's Canyon Rapids (Doug Whittaker) <br />Main Text <br />1. <br />Camping beach on Oregon's Rogue River (Bo Shelby) ........................... 1 <br />2. <br />Swimming on California's Clavey River (Bruce DiGennaro) ....................... <br />2 <br />3. <br />A conceptual framework for assessing effects of flow ........................ <br />6 <br />4. <br />A process for conducting studies of instream flows for recreation ............... <br />9 <br />5. <br />Annual hydrograph for Alaska's Gulkana River ........................... <br />13 <br />6. <br />Incremental curve showing relationship between flow and number of boating "hits" <br />13 <br />T <br />Example of an overall flow preference curve from Grand Canyon ............. <br />14 <br />8. <br />Mean monthly flows on Birch Creek, Alaska .............................. <br />17 <br />9. <br />Peak flow analysis on the Dolores River, Colorado ......................... <br />18 <br />10. <br />Low flow analysis on the Dolores River, Colorado ......................... <br />18 <br />11. <br />Rating curve (flow vs. stage) for the San Pedro River, Arizona ................ <br />19 <br />12. <br />Schematic representation of a cross section ............................... <br />19 <br />13. <br />Transect being conducted on Alaska's Gulkana River (Doug Whittaker) .............. <br />20 <br />14. <br />Hydraulic geometry modeling to identify minimum depts for boating .......... <br />21 <br />15. <br />Bedrock channel reach on Oregon's Rogue River (Doug Whittaker) ................. <br />22 <br />16. <br />Example of an alluvial channel reach on Alaska's Deshka River (Jack Mosby) .......... <br />23 <br />17. <br />The sediment -water scale (based on Lane, 1955) ........................... <br />24 <br />18. <br />Boat dragging on Alaska's Beaver Creek (Bill Jackson) .......................... <br />25 <br />19. <br />Downcutting on the Bill Williams River, Arizona (Bill Jackson) ................... <br />26 <br />20. <br />Channel choking on the Bill Williams River, Arizona (Bill Jackson) ................. <br />26 <br />21. <br />Beach on the Colorado River in Grand Canyon (Bill Jackson) ..................... <br />27 <br />22. <br />Riparian zone on Arizona's San Pedro River (Bill Jackson) ....................... <br />28 <br />23. <br />Launch on Oregon's Deschutes River illustrating historical use method (Bo Shelby) ..... <br />34 <br />24. <br />Professional judgment methods on Colorado's Dolores River (Doug Whittaker) ......... <br />35 <br />25. <br />Team intereaction on an interdisciplinary study (Bo Shelby) ...................... <br />36 <br />26. <br />Field map from a study on Alaska's Little Susitna River (Doug Whittaker) ........... <br />36 <br />27. <br />Experienced users evaluating flows on Alaska's Lake Creek (Bruce Talbot) ............ <br />38 <br />