This publication provides introductory technical guidance for civil engineers and other professional engineers, planners and construction managers interested in hydraulic analysis of rivers with movable boundaries. Here is what is discussed: 1. SIMILARITIES AND DIFFERENCES BETWEEN FIXED AND MOBILE BED COMPUTATIONS, 2. SEDIMENT TRANSPORT FUNCTIONS, 3. GENERAL DATA REQUIREMENTS, 4. GEOMETRIC DATA, 5. BED SEDIMENT DATA, 6. BOUNDARY CONDITIONS DATA, 7. DATA SOURCES, 8. DATA AND PROFILE ACCURACY, 9. MODEL PERFORMANCE, 10. DEVELOPMENT OF BASE TEST AND ANALYSIS OF ALTERNATIVES, 11. COMPUTER PROGRAMS, 12. SCOUR AND DEPOSITION IN RIVERS AND RESERVOIRS, 13. OPEN CHANNEL FLOW AND SEDIMENTATION.