Biogeochemical and sediment characteristics of streambanks with and without preferential groundwater discharge in the Farmington River Watershed, CT, USA

We performed thermal infrared surveys to locate thermal anomilies, indicative of preferential groundwater discharge, along exposed streambanks in three stream reaches within the Farmington River watershed (northwestern CT and southwestern MA, USA). Our sites include 1) the River Island reach, a section of the 5th order Farmington River, 2) West Branch Salmon Brook, a 3rd order tributary to the Farmington River, and 3) Stratton Brook, a 2nd order tributary to the Farmington River. Once areas of preferential groundwater discharge were located, we performed sediment-to-atmosphere greenhouse gas flux measurements and collected groundwater and sediment samples. In addition, we performed sediment-to-atmosphere greenhouse gas flux measurements and collected sediment samples from adjacent streambanks without preferential groundwater discharge. Surface water samples at each of the three stream reaches were also collected. Data collected include greenhouse gas fluxes (CO2, CH4, and N2O), sediment..., , , # Biogeochemical and sediment characteristics of streambanks with and without preferential groundwater discharge in the Farmington River Watershed, CT, USA

[https://doi.org/10.5061/dryad.8w9ghx3xj](https://doi.org/10.5061/dryad.8w9ghx3xj)

## Description of the data and file structure

This dataset includes greenhouse gas fluxes (CO2, CH4, and N2O), sediment organic matter, groundwater and surface water chemistry (CO2, CH4, and N2O concentrations, dissolved organic carbon, dissolved oxygen, total dissolved nitrogen, specific conductance, NO3-N), and groundwater and surface water temperature for three stream reaches within the Farmington River watershed (northwestern CT and southwestern MA, USA). Data included in the dataset were collected in September of 2021 during summer low flow conditions when streambanks are exposed. This dataset includes only 1 excel file: Bisson et al_GHGFlux&ChemistryData_12.22.2024

### Files and variables

#### File: Bisson\_et\_al\_GHGFlux\_ChemistryData...