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LiDAR based 1-m DEM was used to develop new bathtub-model sea-level rise (SLR) coastal inundation maps for the state of Delaware. Inundation maps include surfaces from Mean Higher-High Water (MHHW) to 7 feet above MHHW, in 1-foot increments. These maps will help advise long-range planning of infrastructure, facilities, land management, land use, and capital spending. |
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LiDAR based 1-m DEM was used to develop new bathtub-model sea-level rise (SLR) coastal inundation maps for the state of Delaware. Inundation maps include surfaces from Mean Higher-High Water (MHHW) to 7 feet above MHHW, in 1-foot increments. These maps will help advise long-range planning of infrastructure, facilities, land management, land use, and capital spending. |
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This mapping project was completed by the Delaware Geological Survey (DGS), University of Delaware using Federal funds under award NA13NOS4190093 from the Delaware Department of Natural Resources and Environmental Control, Delaware Coastal Programs and the Office for Coastal Management (OCM), National Oceanic and Atmospheric Administration (NOAA), U.S. Department of Commerce. The statements findings, conclusions and recommendations are those of the author(s) and do not necessarily reflect the views of the OCM, NOAA or the U.S. Department of Commerce. LiDAR data was collected through a collaboration between the United States Geological Survey (USGS), DGS, Department of Natural Resources and Environmental Control (DNREC), and Delaware Department of Transportation (DelDOT), funded through the Hurricane Sandy Supplemental Fund. |
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<DIV STYLE="text-align:Left;"><DIV><P><SPAN>This geodatabase contains a series of state-wide SLR coastal inundation maps corresponding to water surfaces from the mean higher-high water (MHHW) level to 7 feet above MHHW, in 1-foot increments. Development of the bathtub-model inundation maps was based on a high-quality, 1-meter bare earth Digital Elevation Model (DEM) derived from the 2014 state-wide LiDAR acquisition. Elevated roadways and bridges not represented in the bare earth DEM were identified, and manually assessed for inundation for each SLR scenario. Additional documentation can be found at http://www.dgs.udel.edu/projects/determination-future-sea-level-rise-planning-scenarios-delaware</SPAN></P></DIV></DIV> |
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<DIV STYLE="text-align:Left;"><DIV><P><SPAN>None. However users should be aware that the LiDAR data upon which these maps are based represents the land surface as it was when data was collected in Winter 2013-2014 and may not be representative of current conditions. Users should also be familiar with LiDAR data collection accuracy, errors, and systematic biases. It should also be noted that these maps are based on a bathtub model which assumes a constant water surface throughout each watershed. Areas where considerable change to the land surface is known to have occurred included the following:Prime Hook, Dikes near New Castle</SPAN></P></DIV></DIV> |
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Delaware Sea-Level Rise Inundation Maps: 3 ft SLR |
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["inundatation","elevation data","LiDAR","Sea-level rise","climate change"] |
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en-US |
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150000000 |
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