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Towed transient electromagnetic (tTEM) data were acquired along levees at select area near Vicksburg, Mississippi during March 2018. During the survey, 13.7 line-kilometers were collected in the focus area. Data were collected by members of the U.S. Geological Survey, Technology Development and Transfer Team, and the Aarhus University Hydrogeophysics Group. tTEM data acquired along the approximately 14 line-kilometers atop and along the toe of a levee near the banks of the Mississippi River in Warren County, Mississippi. Data were collected to characterize the subsurface resistivity structure of levees in support of a technical demonstration for the U.S. Army Corps of Engineers. tTEM data were collected using an...
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The bay area levees map depicts the locations of levees around the San Francisco Bay Area. It was created using a combination of the Digital Flood Insurance Rate Maps (DFIRM) data from FEMA and digitized lines from USGS 7.5 minute Topo maps and Google Earth aerial imagery. The data source for each feature is described in the Source attribute field as derived from either FEMA or from the Pacific Institute.


map background search result map search result map San Francisco Bay Levees Surficial geology of the Dalton Highway (Itkillik-Sagavanirktok rivers) area, southern Arctic foothills, Alaska Towed-transient electromagnetic survey data, Vicksburg, Mississippi, March 2018 Towed-transient electromagnetic survey data, Vicksburg, Mississippi, March 2018 Surficial geology of the Dalton Highway (Itkillik-Sagavanirktok rivers) area, southern Arctic foothills, Alaska San Francisco Bay Levees