Table of Content: 2.2.3 GEOGRAPHIC INFORMATION SYSTEMS AND COMPUTER-AIDED DESIGN -- 2.2.4 COMPUTERIZED MAINTENANCE MANAGEMENT SYSTEMS -- 2.2.4.1 MAINTENANCE HISTORY -- 2.2.4.2 COMPLAINTS AND SERVICE REQUESTS -- 2.2.4.3 WORK ORDERS -- 2.2.5 INTEGRATING GEOGRAPHIC INFORMATION SYSTEMS AND COMPUTERIZED MAINTENANCE MANAGEMENT SYSTEMS -- 2.2.6 INFLOW AND INFILTRATION IDENTIFICATION -- 2.2.7 FLOW MONITORING -- 2.2.8 HYDRAULIC AND HYDROLOGIC MODELING -- 2.2.8.1 STEADY-STATE SIMULATION VERSUS DYNAMIC SIMULATION -- 2.2.8.2 FLOW DEVELOPMENT -- 2.2.8.3 CALIBRATION/VERIFICATION -- 2.3 CONDITION ASSESSMENT