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Continuous Water Level, Salinity, and Temperature Data from Monitoring Wells in Wetlands on the South Shore of Cape Cod, Massachusetts, 2020


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O'Keefe Suttles, J.A., Eagle, M.J., Sanders-DeMott, R., Nick, S.K., Brooks, T.W., Mann, A.G., and Kroeger, K.D., 2022, Continuous water level, salinity, and temperature data from coastal wetland monitoring wells, Cape Cod, Massachusetts (ver. 2.0, August 2022): U.S. Geological Survey data release,


Environmental parameters affecting plant productivity and microbial respiration, such as water level, salinity, and groundwater temperature included in these datasets, are key components of wetland carbon cycling, carbon storage, and capacity to maintain elevation. Data were collected to (1) provide background data to evaluate potential differences in water level and carbon flux between wetland sites with differing elevation and tidal inundation and (2) facilitate applications of Blue Carbon projects in coastal wetlands. Associated child pages include continuous water level, salinity, and temperature from shallow wells installed in coastal wetland sites on Cape Cod, Massachusetts. These datasets are grouped by the project they support [...]


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“Photograph of a unrestricted Phragmites wetland in Sage Lot Pond, Cape Cod, MA.”
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“Continuous monitoring of well water level, temperature, and salinity.”
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“Water level loggers land elevation, deployment, and well height.”
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Two sites were established in locations of the Sage Lot Pond salt marsh complex (Waquoit Bay, Mashpee, MA) dominated by Phragmites vegetation, close to the forested upland. The site closer to the bay experiences more frequent tidal inundation and more saline waters (Unrestricted-High) than the inland site which is at a higher elevation and where fresh groundwater contributes to lower salinity (Unrestricted-Low). Data reported include continuous water level, salinity, and temperature in support of field experiments examining how carbon fluxes vary across a salinity gradient in impounded and natural, tidally unrestricted Phragmites wetlands. Data from the tidally restricted sites at Herring River are available in an accompanying child page within this data release.

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