This study was conducted in the Talladega research watershed (outlet location: 33.76219799, -85.59550775) in the Talladega National Forest (Cleburne County, AL, USA). The watershed drains a non-perennial unnamed tributary of Pendergrass Creek, and contains 0.92 km^2 of mixed coniferous and deciduous forest in the Piedmont Upland physiographic section. Located near Anniston, AL, the watershed spans an elevation range from 345 to 456 m above sea level and is a tributary to the Coosa River (within the larger Mobile-Tombigbee basin). The region has a humid subtropical climate, with mean daily January and July air temperatures of 5.3°C and 25.3°C respectively, and mean annual precipitation of 1,400 mm/yr.

These data were collected in support of the sampling goals of the Aquatic Intermittency effects on Microbiomes in Streams (AIMS) Project. 14 pressure transducers were placed in seven sets of nested groundwater and surface water monitoring wells along the Talladega watershed, as well as an additional pressure transducer hanging from a tree at the watershed outlet to collect barometric pressure. These 15 pressure transducers collected data from Aug. 2021 through Oct. 2024, with the two pressure transducers at the watershed outlet being vented sensors (Seametrics PT12 pressure/temperature sensor) from 2021 through 2023, whereas all other sensors were unvented (Onset HOBO U20 series pressure transducers). These nested well locations monitored water level continuously throughout the project, as well as served as the AIMS approach 2 sampling locations, where a field team co-collected datasets characterizing the hydrology, biogeochemistry, and ecology across seven locations within the Talladega watershed six times across two years.

These sensors were set to collect temperature and pressure data every 15 minutes starting from Aug. 2021 through Feb. 2024, and every 1 hour from Feb. to Oct. 2024. The raw pressure data were converted to water level using barometric pressure data and surveyed elevation data. Each .csv file is associated with a single sensor for a single year.