MODFLOW6 and SNTEMP models were developed to simulate groundwater flows and instream temperatures in Beaver Creek, Alaska from 2019-2023 using python scripts to create a reproducible workflow to process input datasets into model files. This data release contains the scripts used to build the SNTEMP and MODFLOW models, process model output to compare to field observations, and develop and run the PEST++ workflow for history matching. These workflows are described in the readme.md files in this archive and are used to implement the modeling decisions described in the associated report, "Simulating present and future Groundwater/Surface-water interactions and stream temperatures in Beaver Creek, Kenai Peninsula, Alaska".