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Airborne electromagnetic (AEM), magnetic, and radiometric data were acquired November 2018 to February 2019 along 16,816 line-kilometers (line-km) over the Mississippi Alluvial Plain (MAP). Data were acquired by CGG Canada Services, Ltd. with three different helicopter-borne sensors: the CGG Canada Services, Ltd. Resolve frequency-domain AEM instrument that is used to map subsurface geologic structure at depths up to 100 meters, depending on the subsurface resistivity; a Scintrex CS-3 cesium vapor magnetometer that detects changes in deep (hundreds of meters to kilometers) geologic structure based on variations in the magnetic properties of different formations; and a Radiation Solutions RS-500 spectrometer that...
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Using publicly available data for Ontario and Wayne counties, New York, a series of geospatial overlays were created at 1:24,000 scale to examine the bedrock geology, groundwater table, soils, and surficial geology. Bedrock and surficial geology were refined using extant bedrock maps, well and borehole data from water- and gas-wells, soil data, and lidar data. Groundwater data were collected from New York State Department of Environmental Conservation and U.S. Geological Survey water-well databases to estimate the groundwater table. Soil data were used to examine soil thickness over bedrock and infiltration. An inventory of closed depressions was created using reconditioned lidar-derived bare-earth digital elevation...
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Water temperature (degrees Celsius) and specific conductance (microsiemens per centimeter at 25 degrees Celsius; TC) were measured at U.S. Geological Survey streamgage 05536995, located at Chicago Sanitary and Ship Canal near the Electrical Dispersal Barrier System in Romeoville, Illinois. The TC data were measured every five minutes at four gage height levels above the gage datum (P1 = 21 feet, P2 = 17 feet, P3 = 13 feet, P4 = 9 feet). The gage datum is 551.76 feet above the North American Vertical Datum of 1988 (NAVD 88). Daily mean and five-minutes water temperature and specific conductance data were downloaded from the National Water Information System (NWIS) database and stored in Comma Separated Values (CSV)...
This folder contains the orthoimagery, digital elevation model (DEM), digital terrain model (DTM), final surface model, and vegetation classification model for basin A1.
This folder contains the orthoimagery, digital elevation model (DEM), digital terrain model (DTM), final surface model (SRF), and vegetation classification model (Veg) for basin B1.
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An extreme flood in 2016 caused widespread culvert blockages and road failures across northern Wisconsin, including extensive damage along steep tributaries and ravines in the Marengo River watershed. Along with the flooding, there were fluvial erosion hazards (FEH) associated with a large amount of erosion in headwater areas. Of special concern were FEHs associated with gullying, loss of wetland storage, and valley-side mass wasting. In 2020, a pilot study was begun to map and classify ephemeral and perennial streams and wetlands in terms of their susceptibility to fluvial erosion hazards. This study combines rapid geomorphic field assessments of river corridor erosion and coupled sediment and debris delivery with...
map background search result map search result map AEM inverted resistivity models Orthoimagery for basin A1 Final surface model (SRF) for basin A1 Vegetation classification model (Veg) for basin A1 Orthoimagery for basin A2 Digital elevation model (DEM) for basin A2 Final surface model (SRF) for basin A2 Orthoimagery for basin B1 Digital terrain model (DTM) for basin B1 Final surface model (SRF) for basin B1 Orthoimagery for basin B2 Digital elevation model (DEM) for basin B2 Final surface model (SRF) for basin B2 Digital terrain model (DTM) for basin B2 Vegetation classification model (Veg) for basin B2 Water Temperature and Specific Conductance in the Chicago Sanitary and Ship Canal Near the Electrical Dispersal Barrier System at Romeoville, Illinois, October 1, 2019, to September 30, 2020 Geospatial datasets to assess karst aquifer systems in Ontario and Wayne counties, New York Fluvial Erosion Hazard Analysis Data from the Marengo River Watershed, Ashland County, Wisconsin Water Temperature and Specific Conductance in the Chicago Sanitary and Ship Canal Near the Electrical Dispersal Barrier System at Romeoville, Illinois, October 1, 2019, to September 30, 2020 Final surface model (SRF) for basin A1 Orthoimagery for basin A1 Vegetation classification model (Veg) for basin A1 Orthoimagery for basin B2 Final surface model (SRF) for basin B2 Vegetation classification model (Veg) for basin B2 Digital elevation model (DEM) for basin B2 Digital terrain model (DTM) for basin B2 Orthoimagery for basin A2 Digital elevation model (DEM) for basin A2 Final surface model (SRF) for basin A2 Orthoimagery for basin B1 Digital terrain model (DTM) for basin B1 Final surface model (SRF) for basin B1 Fluvial Erosion Hazard Analysis Data from the Marengo River Watershed, Ashland County, Wisconsin Geospatial datasets to assess karst aquifer systems in Ontario and Wayne counties, New York AEM inverted resistivity models