This resource contains high-frequency EXOS water quality sensor data collected at the outlet of the Paint Rock study watershed, including conductivity, dissolved oxygen, turbidity, fluorescent dissolved organic matter concentrations, and temperature. This study was conducted in the Paint Rock research watershed (outlet location: 34.96861724, -86.16501705) on privately owned property in Jackson County (AL, USA). The watershed drains a non-perennial unnamed tributary to Burks Creek, and contains 2.97 km^2 of deciduous forest in the Cumberland Plateau physiographic section. Located near Estillfork, AL, the watershed spans an elevation range from 211 to 550 m above sea level, and is a tributary to the Paint Rock River (within the larger Tennessee basin). The region has a humid subtropical climate, with mean daily January and July air temperatures of 4.4°C and 25.4°C respectively, and mean annual precipitation of 1,390 mm/yr.

These data were collected in support of the core sampling goals of the Aquatic Intermittency effects on Microbiomes in Streams (AIMS) Project. Between 1 August 2021 and 4 September 2024, we monitored surface water quality and physicochemistry at the outlet (PRM01) of the AIMS Paint Rock watershed at 15 minute intervals using a multi-parameter sonde (YSI EXO2).

Included in this excel file are four tabs: 1. Metadata: methods, authorship and site information; 2. Data Types: column descriptions for each data file in this resource; 3. Site_info; site name, latitude and longitude for the site at which the sensor was deployed; 4. QAQC'ed EXO data

Sensors were maintained every three weeks according to this SOP: Flynn, S., S. Godsey, R. Hale, R. Lanfear, E. Seybold, S. Speir, M. Wolford (2025). Sensor Maintenance SOP, HydroShare, http://www.hydroshare.org/resource/f056a431a6794d2dbf9f6206c00ac560

Sensors were calibrated quarterly according to this SOP: Flynn, S., R. Lanfear, E. Seybold (2025). Sensor Calibration SOP, HydroShare, http://www.hydroshare.org/resource/85fa713daf0142a4b45e3bc8ff1d1e30

FDOM was corrected for Turbidity and Temperature according to the methods from Downing et al 2012.

For information about installing sensors, please see https://www.hydroshare.org/resource/703cf05242f7455c8dfb072dd072c962/

For further information on pressure transducer data related to this resource, please see: Peterson, D., N. Jones (2025). Paint Rock Pressure Transducer Data (AIMS_SE_PRF_approach1_PRES), HydroShare, http://www.hydroshare.org/resource/a45b5e24dafc4a76a665405664afada7

For further information on continuous discharge measurements at the watershed outlet/related to this resource, please see: Plont, S., S. Speir, D. Peterson, N. Jones (2025). AIMS Paint Rock Continuous Discharge at Watershed Outlet Data (AIMS_SE_PRF_DISC), HydroShare, http://www.hydroshare.org/resource/043fc07f0c3b47bcabbd0bf5600d929f

For further information on field discharge measurements related to this resource, please see: Plont, S., D. Peterson, N. Jones, S. Speir (2025). AIMS Paint Rock Field Discharge Data (AIMS_SE_PRF_DISL), HydroShare, http://www.hydroshare.org/resource/d52b989e537349019842dba236627b66