This powerpoint presentation begins by providing background information on Tampa Bay Water that includes: historically groundwater supply-oriented; extensive water supply litigation in 1990's related to environmental degradation; agency reformed in 1998 as Tampa Bay Water; permitting tied to reformation; groundwater reduction agreement; and, Master Water Plan developed for alternative water supply sources. The presentation outlines how historical events supported the need for improved water shortage planning, along with Water Shortage Mitigation Plan (WSMP) trigger criteria should be based on supply reliability, and Enhanced Surface Water System (ESWS) supply reliability drives the need for a shortage plan. Water Shortage Mitigation Plan (WSMP) objectives include: can water shortage definitions be linked to conditions corresponding to high risk of surface water supply exhaustion; and, can mitigation activities (demand reduction, supply augmentation) quantifiably reduce risk of surface water exhaustion? Objectives for WSMP Triggers include: Level 4 Water Supply Crisis - critical water supply shortage, ESWS shutdown imminent; Level 3 Water Shortage - extreme water supply shortage, reduced ESWS reliability with decreasing reservoir elevation; Level 2 Drought Warning - reduced rainfall and stream flow, reservoir storage adequate but decreasing; and, Level 1 Drought Alert - reduced rainfall or stream flow, indicating potential for water supply shortage. Development of water shortage levels and triggers, demand management actions, and supply management actions are all presented.