Precipitation patterns across the nation are changing, but not in the same way everywhere. Some places are experiencing new record extreme precipitation events, while others are coping with drought. As the climate continues to warm it is expected that historical precipitation patterns can no longer be reliably used to plan for the future. The uncertainty about future precipitation places new risks on community infrastructure essential for the livelihoods and safety of its residents.This session will explore how communities are using hydrological information in the context of a changing climate to prepare for an uncertain future for their water, either too much or too little. Presentations should focus on direct applications of climate and hydrological information and tools that inform decision making for community preparedness. Community preparedness can include:(1) Improvements to the built environment, including land use changes, to address changing water resources based on climate information; (2) Policy changes, such as updates to emergency response protocols, water utility planning, and water restriction measures; (3) Help to decision makers to communicate their water related risk management decisions to the public and improve community support and compliance for their decisions. In addition to showing how current information and tools can be used, it is encouraged to demonstrate what additional information would be useful, but is not readily available. Public, academic, and private sector decision support services and tools are welcomed. Key questions each presentation should address include:(a) How is hydrological information in the context of a changing climate being used to inform risk management decisions that improve community preparedness for water too much, and/or water too little? (b) What lessons learned or best practices emerged from your example that could be applied to other communities? (c) Who did you partner with and were these the right partners to improve community preparedness? (4) What additional information could the decision makers in your example have used that is not yet available? For more information, please contact the Program Organizers, Nancy Beller-Simms (firstname.lastname@example.org) or Stephanie Herring (email@example.com.