The purpose of this interagency report prepared by the U.S. Geological Survey (USGS), U.S. Army Corps of Engineers (USACE), Bureau of Reclamation, and National Oceanic and Atmospheric Administration (NOAA) is to explore strategies to improve water management by tracking, anticipating, and responding to climate change. The terms of reference for the report are to consider the responses and adaptations of a responsible Federal body in the monitoring, management, and future design of the Nation’s water resources.