Despite advances in hydroclimatic forecasting methodologies, water resources decision makers are hindered or constrained in using sub-seasonal to seasonal forecasts due to lack of coherence with decision processes, information needs, or other institutional contexts. Changing climate and watershed conditions, which alter the information content of historical data and the limited ability to insure against poor forecasts, may be other reasons for the lack of forecast use. To bring together communities of practice, boundary organizations, and researchers, this session presents interdisciplinary perspectives on the use of hydroclimatic forecasts for water resources decision-making. Advances in hydroclimatic forecasting including the accuracy, timeliness, and uncertainty quantification/communication are addressed, especially with respect to effective forecast use, along with improvements in the delivery and usability of forecast information. Case studies of forecasts in disaster management and operation/ management of water resources and associated systems including energy and agricultural are also highlighted.