This dataset contains the information necessary for bioenergetics modeling of rainbow trout growth in select tributaries to the Upper Skagit River Hydroelectric reservoirs. The diet, invertebrate drift, and size-at-age data used to create modeling inputs is included in csv files. The input data generated for modeling can be found in the folder 'FB4 Upper Skagit Tributaries - Data Release' and includes stream temperatures derived from direct observations, fish size-at-age from scale analysis, and fish diet and stream invertebrate drift data. Output data and log files from our modeling in the associated publication is also included in this folder. Please refer to the associated publication for additional details about data collection and processing.