This subproduct includes the input data and output data (i.e., results) of EPA's CBW-cont-stream-temp-QC program (ACE.409.4.2.8). These datasets and the accompanying readme file are stored separately on Zenodo (https://zenodo.org/records/15547233). The input data includes multiple sources of continuous stream temperature monitoring data and monitoring station information for the Chesapeake Bay Watershed. By applying the CBW-cont-stream-temp-QC program with the full input data, users have the ability to reproduce the QC-aggregated results in the output data, providing method and data-transparency. The output datasets include QC-aggregated site information, summarized daily temperature data, and summarized monthly temperature data that were developed for spatial stream network (SNN) regional temperature modeling with the NHDPlusHR flowline network. The user has the ability to use the QC-aggregated temperature data and site information for their own purposes. This data product facilitates future development of regional stream temperature models that are needed by EPA and its regional partners in the mid-Atlantic to evaluate mitigation potential of forested riparian zones in order to protect cold-water stream habitat.