This project is exploring innovative ways to address risk and resilience related to hydroclimatic extremes in both the upper and lower tails of streamflow probability distributions.  The goal is to transfer the knowledge and record length that climate information and paleodata provide into useful tools for hydrologic decision making involving risk and resilience related to both floods and drought. Specific objectives include:  (1) transfer of information from tree-ring reconstructions about past extreme streamflow episodes to water managers for integration into operations; (2) ongoing construction of a flood hydroclimatology database for linking climate, floods, and paleofloods; (3) interaction with stakeholders to develop innovative ways to use the flood database information in (2); and (4) exploration of issues surrounding flood risk and human behavior to improve flood hazard management and flood warning practice. In 2010-11 the focus was on objectives (2), (3) and (4).