Soil water balance, groundwater flow, and stream temperature models for Beaver Creek, Alaska, 2019 to 2050

A combined soil water balance, groundwater flow and stream temperature model was developed to simulate stream temperature under historical and future conditions. Soil-Water-Balance code was used to estimate net infiltration past the root zone and surface runoff, which were applied to a transient, three-dimensional MODFLOW 6 model to simulate the water budget for Beaver Creek and the contributing groundwater flow system at a 7-day time resolution. Instream temperatures were simulated using a Stream Network TEMPerature (SNTEMP) model based on the Streamflow Routing (SFR) Package network and simulated groundwater discharge and surface runoff from the MODFLOW model. Model parameter estimation was performed via history matching of groundwater levels, instream flows and stream temperatures for 2019–2023. Future climate scenarios were developed using an initial spin up 2019-2023 period and then downscaled data from the Scenarios Network for Alaska and Arctic Planning (SNAP) for 2023-2050 This data release is split into 6 child items so that a user can choose which portions of the model archive to download to avoid downloading large model files that are unnecessary for a particular use. An overview of the contents of each child item and complete instructions for downloading the model input and output files, running the model, and running the python scripts used to build and update the model are provided in the parent_beaver_creek_readme.md file at the main level of this data release and the readme.md files provided with each data release child item.