Introductory technical guidance for civil engineers and water resources managers interested in operational characteristics of water management facilities. Here is what is discussed: 1. GENERAL CONSIDERATIONS 2. SPILLWAYS 3. OUTLET WORKS 4. FLOOD RISK MANAGEMENT OPERATION 5. INDUCED FLOOD SURCHARGE STORAGE 6. OUTLET WORKS RELEASES 7. DIVERSION AND BYPASS STRUCTURES 8. HURRICANE OR TIDAL BARRIERS 9. INTERIOR FLOOD RISK MANAGEMENT FACILITIES 10. HYDROELECTRIC POWER GENERATION FACILITIES 11. USE OF WATER MANAGEMENT FACILITIES FOR FISHERY ENHANCEMENT.