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Locations of groundwater discharging to surface water are hydrologically and ecologically important for nutrient processing and thermal refugia, yet little is known about the spatial distribution of groundwater discharges at the river network scale. Groundwater discharge locations can be used to identify anomalous groundwater discharging to surface water as colder groundwater interfaces with warmer surface water in late summer. This data release contains GPS locations, thermal infrared images, and direct temperature measurements of groundwater discharges throughout the Farmington and Housatonic River watersheds. These data were collected in late summer/ early fall 2019 to characterize the spatial distribution of groundwater discharges throughout the Farmington and Housatonic River networks. The initial data release contains groundwater discharge locations and associated thermal images along the Salmon Brook River in the Farmington River watershed. Additional data for the Farmington and Housatonic River watersheds will be added to this dataset in the future. This dataset contains 3 files: 1) SalmonBrook_FLIR.zip is a zipped directory containing thermal infrared and real color images. 2) SalmonBrook_Image_Details.csv contains attribute information for each thermal image. 3) SalmonBrook_Seeps.shp is an ESRI shapefile of the groundwater discharge locations with FLIR thermal images and field notes. Files associated with this shapefile include: the database file SalmonBrook_Seeps.dbf, the projection file SalmonBrook_Seeps.prj, and the geodatabse file SalmonBrook_Seeps.shx. 4) LegacyN_FLIR_2019_readme is a high level readme text file that describes all of the files on the root landing page.