Measurements made in Lake Erie funded by National Institutes of Health and the National Science Foundation.

Water quality measurements taken in the Great Lakes region of the United States.

Measurements made in the Chesapeake Bay in 2004.

2013 Chesapeake Bay measurements.

From May of 2015 through September of 2018, water-quality data were collected at 178 locations from select tributaries, embayments, and nearshore lake locations along New York's Lake Ontario waterfront in support of the Great Lakes Restoration Initiative and the Lakewide Action Management Plan. These data include environmental, replicate, and blank samples of nutrients and suspended solids as well as field measurements of physical parameters (temperature, specific conductance, dissolved oxygen, pH, turbidity, phycocyanin relative fluorescence, and chlorophyll relative fluorescence).

This data release supports the following publication: Hittle, Elizabeth, 2017, Longshore Water-Current Velocity and the Potential for Transport of Contaminants: A Pilot Study in Lake Erie from Walnut Creek to Presque Isle State Park Beaches, Erie, Pennsylvania, June and August 2015: U.S. Geological Survey Open-File Report 2016–1206 126 p., https://doi.org/10.3133/ofr20161206. This data set contains water quality data (temperature, specific conductance, and turbidity) measured and recorded on June 25, 2015 with a YSI EXO probe and depth measured and recorded by a design analysis 700H pressure transducer. The data was collected along select transects at ~300 meter spacing by moving the probe down and up throughout the water column. Data is provided only when the probe was moving from the bottom to the top of the water column as the data recorded from top to bottom was found to be biased. Data was recorded at 1 second intervals.