Water-quality constituents were measured along planned survey lines, which were generally perpendicular to the shoreline and spaced 100 meters apart, over an approximately 2.3-mile section of nearshore Lake Erie on June 10-12, 2019 (survey 1), and August 19-21, 2019 (survey 2), with a YSI EcoMapper autonomous underwater vehicle (AUV) using an undulating dive pattern (a 15-degree dive angle between the surface and 6 feet above the bottom). Water-quality data collected in this area included three-dimensional measurements of water temperature, specific conductance, pH, dissolved oxygen, chlorophyll, and phycocyanin (blue-green algae). The water-quality data were measured at 1-second intervals and were geo-referenced with the AUV onboard Global Positioning System (GPS WAAS) system. There was a total of 40 survey lines which typically started about 50 meters offshore and ended 500 meters offshore, and the survey lines covered the area around the mouth of Euclid Creek, Villa Angela Beach, Wildwood Marina, and the Easterly Wastewater Treatment Plant. Data were post-processed with a custom MATLAB script. Each water-quality measurement has an associated latitude and longitude (WGS84) and sample depth (in meters) below the surface. All water-quality sensors were calibrated per USGS standard methods prior to the start of the survey. These water-quality measurements were collected over the course of six total days, three in early summer (survey 1) and three in late summer (survey 2), to characterize circulation, mixing, and transport patterns in nearshore Lake Erie in the vicinity of Euclid Creek and Villa Angela Beach.

Water-quality constituents were measured along planned survey lines, which were generally perpendicular to the shoreline and spaced 100 meters apart, over an approximately 2.3-mile section of nearshore Lake Erie on June 10-12, 2019 (survey 1), and August 19-21, 2019 (survey 2), using a YSI 6920 V2 multiparameter sonde towed from the side of a marine survey vessel at about 1-ft depth. Water-quality data collected in this area included near-surface measurements of water temperature, specific conductance, pH, dissolved oxygen, and turbidity. The water-quality data were measured at 5-second intervals and were geo-referenced with a global navigation satellite system (GNSS) smart antenna with submeter accuracy. There was a total of 43 survey lines which typically started about 50 meters offshore and ended 500 meters offshore, and the survey lines covered the area around the mouth of Euclid Creek, Villa Angela Beach, Wildwood Marina, and the Easterly Wastewater Treatment Plant. Additional data were also measured along a series of lines parallel to the shoreline throughout the survey area. Data were post-processed with a custom MATLAB script to geo-reference the water-quality data based on time stamps and to manually edit the data to remove spikes and other errors. Each water-quality measurement has an associated latitude and longitude (WGS84) and sample depth (in feet) below the surface. All water-quality sensors were calibrated per USGS standard methods prior to the start of the survey. These water-quality measurements were collected over the course of six total days, three in early summer (survey 1) and three in late summer (survey 2), to characterize circulation, mixing, and transport patterns in nearshore Lake Erie in the vicinity of Euclid Creek and Villa Angela Beach.

Water-quality constituents were measured along planned survey lines, which were generally perpendicular to the shoreline and spaced 100 meters apart, over an approximately 2.3-mile section of nearshore Lake Erie on June 10-12, 2019 (survey 1), and August 19-21, 2019 (survey 2), using a YSI 6920 V2 multiparameter sonde towed from the side of a marine survey vessel at about 1-ft depth. Water-quality data collected in this area included near-surface measurements of water temperature, specific conductance, pH, dissolved oxygen, and turbidity. The water-quality data were measured at 5-second intervals and were geo-referenced with a global navigation satellite system (GNSS) smart antenna with submeter accuracy. There was a total of 43 survey lines which typically started about 50 meters offshore and ended 500 meters offshore, and the survey lines covered the area around the mouth of Euclid Creek, Villa Angela Beach, Wildwood Marina, and the Easterly Wastewater Treatment Plant. Additional data were also measured along a series of lines parallel to the shoreline throughout the survey area. Data were post-processed with a custom MATLAB script to geo-reference the water-quality data based on time stamps and to manually edit the data to remove spikes and other errors. Each water-quality measurement has an associated latitude and longitude (WGS84) and sample depth (in feet) below the surface. All water-quality sensors were calibrated per USGS standard methods prior to the start of the survey. These water-quality measurements were collected over the course of six total days, three in early summer (survey 1) and three in late summer (survey 2), to characterize circulation, mixing, and transport patterns in nearshore Lake Erie in the vicinity of Euclid Creek and Villa Angela Beach.

Water velocities and water-quality constituents were measured along planned survey lines, which were generally perpendicular to the shoreline and spaced 100 meters apart, over an approximately 2.3-mile section of nearshore Lake Erie on June 10-12, 2019 (survey 1), and August 19-21, 2019 (survey 2), using a 1200 kHz acoustic Doppler current profiler (ADCP), a YSI 6920 V2 multiparameter sonde, and a YSI EcoMapper autonomous underwater vehicle (AUV). Water-quality data collected in this area included near-surface and three-dimensional measurements of water temperature, specific conductance, pH, dissolved oxygen, turbidity, chlorophyll, and phycocyanin (blue-green algae). The data were geo-referenced with an integrated global navigation satellite system (GNSS) smart antenna with submeter accuracy. The ADCP, multiparameter sonde, and GNSS antenna were mounted on a marine survey vessel, and data were collected as the survey vessel traversed the lake along planned survey lines. The EcoMapper AUV was programmed to follow the same planned survey lines using an undulating dive pattern (a 15-degree dive angle between the surface and 6 feet above the bottom). There was a total of 43 survey lines which typically started about 50 meters offshore and ended 500 meters offshore, and the survey lines covered the area around the mouth of Euclid Creek, Villa Angela Beach, Wildwood Marina, and the Easterly Wastewater Treatment Plant. Data were post-processed using various software and custom MATLAB scripts. Each water-quality measurement has an associated latitude and longitude (WGS84) and sample depth (in feet) below the surface. All water-quality sensors were calibrated per USGS standard methods prior to the start of the survey. These velocity and water-quality measurements were collected over the course of six total days, three in early summer (survey 1) and three in late summer (survey 2), to characterize circulation, mixing, and transport patterns in nearshore Lake Erie in the vicinity of Euclid Creek and Villa Angela Beach. Additionally, continuous measurements of nearshore currents in Lake Erie in the vicinity of Villa Angela Beach and Euclid Creek, Cleveland, Ohio, were recorded during the summer of 2019. Currents were measured every 15 minutes with a 5-minute averaging interval using two different acoustic Doppler velocity meters (ADVM). The individual datasets from each of these instruments are organized as child items in this data release. See each child item page for additional details.

Water velocities and water-quality constituents were measured along planned survey lines, which were generally perpendicular to the shoreline and spaced 100 meters apart, over an approximately 2.3-mile section of nearshore Lake Erie on June 10-12, 2019 (survey 1), and August 19-21, 2019 (survey 2), using a 1200 kHz acoustic Doppler current profiler (ADCP), a YSI 6920 V2 multiparameter sonde, and a YSI EcoMapper autonomous underwater vehicle (AUV). Water-quality data collected in this area included near-surface and three-dimensional measurements of water temperature, specific conductance, pH, dissolved oxygen, turbidity, chlorophyll, and phycocyanin (blue-green algae). The data were geo-referenced with an integrated global navigation satellite system (GNSS) smart antenna with submeter accuracy. The ADCP, multiparameter sonde, and GNSS antenna were mounted on a marine survey vessel, and data were collected as the survey vessel traversed the lake along planned survey lines. The EcoMapper AUV was programmed to follow the same planned survey lines using an undulating dive pattern (a 15-degree dive angle between the surface and 6 feet above the bottom). There was a total of 43 survey lines which typically started about 50 meters offshore and ended 500 meters offshore, and the survey lines covered the area around the mouth of Euclid Creek, Villa Angela Beach, Wildwood Marina, and the Easterly Wastewater Treatment Plant. Data were post-processed using various software and custom MATLAB scripts. Each water-quality measurement has an associated latitude and longitude (WGS84) and sample depth (in feet) below the surface. All water-quality sensors were calibrated per USGS standard methods prior to the start of the survey. These velocity and water-quality measurements were collected over the course of six total days, three in early summer (survey 1) and three in late summer (survey 2), to characterize circulation, mixing, and transport patterns in nearshore Lake Erie in the vicinity of Euclid Creek and Villa Angela Beach. Additionally, continuous measurements of nearshore currents in Lake Erie in the vicinity of Villa Angela Beach and Euclid Creek, Cleveland, Ohio, were recorded during the summer of 2019. Currents were measured every 15 minutes with a 5-minute averaging interval using two different acoustic Doppler velocity meters (ADVM). The individual datasets from each of these instruments are organized as child items in this data release. See each child item page for additional details.

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 Water-quality grab samples were collected about a meter from shore and coincide with the 25 longshore water-current velocity transects as closely as conditions would allow. Nearshore water-quality grab samples were collected on June 24, August 11, and August 19, 2015. Samples were analyzed for bacteria concentration, temperature, specific condictivity, pH, turbidity, and suspended sediment concentration. Not all parameters were analyzed for every sample. Samples were collected by Erie County Department of Health (ECDH) employees and Regional Science Consortium (RSC) interns. The nearshore water-quality samples were collected using grab-sample techniques. To maintain sterile conditions, grab samples were collected in at least 1 meter of water at approximately 0.3 meters below the water surface, being careful not to stir up bottom sediments. Water samples for bacteria analysis were collected in pre-sterilized 500-mL polypropylene bottles, allowing about 2 inches of head space for proper mixing, and were kept on ice prior to processing. Bacteria samples were analyzed for Escherichia coli (E. coli) using modified mTEC membrane-filtration techniques and were processed by RSC staff in the RSC laboratory within 6 hours of sample collection. Water samples for sediment analysis (June 24 and August 11, 2015) were collected in pre-tared 1000-mL polypropylene bottles by tilting the bottle at about a 45 degree angle away from the sampler and moving it from just under the surface (where the bottle was uncapped) to just above the streambed and back in a smooth vertical motion to get as close to a depth-integrated, single-vertical grab sample as possible. Sediment samples were prepared for shipping and sent to the USGS sediment laboratory at the USGS Kentucky Water Science Center where they were analyzed for total suspended sediment concentration, sand/fine break (percent of sediment less than 4 mm), and fine components including percent fines less than 2 mm, 1 mm, 0.5 mm, 0.25 mm, 0.125 mm, and silt/clay break at <0.0625mm.

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 Water-quality grab samples were collected about a meter from shore and coincide with the 25 longshore water-current velocity transects as closely as conditions would allow. Nearshore water-quality grab samples were collected on June 24, August 11, and August 19, 2015. Samples were analyzed for bacteria concentration, temperature, specific condictivity, pH, turbidity, and suspended sediment concentration. Not all parameters were analyzed for every sample. Samples were collected by Erie County Department of Health (ECDH) employees and Regional Science Consortium (RSC) interns. The nearshore water-quality samples were collected using grab-sample techniques. To maintain sterile conditions, grab samples were collected in at least 1 meter of water at approximately 0.3 meters below the water surface, being careful not to stir up bottom sediments. Water samples for bacteria analysis were collected in pre-sterilized 500-mL polypropylene bottles, allowing about 2 inches of head space for proper mixing, and were kept on ice prior to processing. Bacteria samples were analyzed for Escherichia coli (E. coli) using modified mTEC membrane-filtration techniques and were processed by RSC staff in the RSC laboratory within 6 hours of sample collection. Water samples for sediment analysis (June 24 and August 11, 2015) were collected in pre-tared 1000-mL polypropylene bottles by tilting the bottle at about a 45 degree angle away from the sampler and moving it from just under the surface (where the bottle was uncapped) to just above the streambed and back in a smooth vertical motion to get as close to a depth-integrated, single-vertical grab sample as possible. Sediment samples were prepared for shipping and sent to the USGS sediment laboratory at the USGS Kentucky Water Science Center where they were analyzed for total suspended sediment concentration, sand/fine break (percent of sediment less than 4 mm), and fine components including percent fines less than 2 mm, 1 mm, 0.5 mm, 0.25 mm, 0.125 mm, and silt/clay break at <0.0625mm.

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 24, 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 5 second intervals except for transects 17 and 24 which were collected at 1 second intervals. The depth data for transects 4 and 6 are not available due to user error.

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 24, 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 5 second intervals except for transects 17 and 24 which were collected at 1 second intervals. The depth data for transects 4 and 6 are not available due to user error.

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.