The National Oceanic and Atmospheric Administration (NOAA) intends to award a sole-source, firm-fixed-price purchase order to Valinor Labs for non-personal services to modify a custom C++ program that predicts the effects of dam and reservoir operations on juvenile salmon and steelhead survival in the Columbia River hydropower system. The work includes completing the graphical user interface and adult passage module, expanding the model to include tributary travel time and survival, and improving speed and efficiency. The performance location is not specified, and no budget amount is provided. The anticipated award date is estimated to be June 2026. This is not a request for competitive proposals, but firms that believe they can meet the requirements may submit documentation for consideration.