These data were compiled to support water management decision-making by the U.S. Bureau of Reclamation and California Department of Water Resources related to the Central Valley Project (CVP) and State Water Project (SWP) operations in water year 2025. The objectives of the study were to use structured decision making to assess tradeoffs between multiple competing water needs and inform decisions related to summer and fall flow and non-flow actions for delta smelt (Hypomesus transpacificus). These data represent composite utility scores (performance) for each alternative water management strategy considered in the decision analysis, and calculated using objective weights for each participating agency or non-governmental organization. These data were collected during in-person and online workshop sessions between February 13 and March 25, 2025, in Sacramento California. These data were collected and generated by the U.S. Geological Survey, Metropolitan Water District of Southern California, and the U.S. Bureau of Reclamation using established linear value models. The data can be used to rank alternative water management strategies to inform decisions related to water releases from CVP and SWP reservoirs and pumping stations.