The BOREAS TGB-1 and TGB-3 teams collected several data sets that contributed to understanding the measured trace gas fluxes over sites in the NSA. This data set contains continuous and manual measurements of water level and air and soil temperatures at the four subsites within the NSA Tower Fen site complex. The measurements were taken to understand the thermal and hydrological gradients associated with each plant community present in the fen. Measurements were taken from May to September 1994 and May to October 1996. The data are provided in tabular ASCII files.Bubier, Jill L. and Comer, Neil and Moore, Tim R. and Hall, Forrest G. (Editor) and Conrad, Sara K. (Editor)Goddard Space Flight CenterREMOTE SENSING; DATA ACQUISITION; ATMOSPHERIC COMPOSITION; GAS SPECTROSCOPY; SURFACE TEMPERATURE; SOILS; TRACE CONTAMINANTS; TEMPERATURE MEASUREMENT; TEMPERATURE PROFILES; WATER TABLES; TEMPERATURE GRADIENTS; EMISSION SPECTRA; GAS CHROMATOGRAPHY; METHANE; SULFUR HEXAFLUORIDE; THERMOCOUPLES