20140702 10522500 1.0 FALSE PLC_Impervious_2012 -8437213.896674 -8352684.896674 4643169.670550 4842990.670550 1 002 Projected GCS_WGS_1984 Linear Unit: Meter (1.000000) WGS_1984_Web_Mercator_Auxiliary_Sphere <ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/2.8.0'><WKT>PROJCS[&quot;WGS_1984_Web_Mercator_Auxiliary_Sphere&quot;,GEOGCS[&quot;GCS_WGS_1984&quot;,DATUM[&quot;D_WGS_1984&quot;,SPHEROID[&quot;WGS_1984&quot;,6378137.0,298.257223563]],PRIMEM[&quot;Greenwich&quot;,0.0],UNIT[&quot;Degree&quot;,0.0174532925199433]],PROJECTION[&quot;Mercator_Auxiliary_Sphere&quot;],PARAMETER[&quot;False_Easting&quot;,0.0],PARAMETER[&quot;False_Northing&quot;,0.0],PARAMETER[&quot;Central_Meridian&quot;,0.0],PARAMETER[&quot;Standard_Parallel_1&quot;,0.0],PARAMETER[&quot;Auxiliary_Sphere_Type&quot;,0.0],UNIT[&quot;Meter&quot;,1.0],AUTHORITY[&quot;EPSG&quot;,3857]]</WKT><XOrigin>-20037700</XOrigin><YOrigin>-30241100</YOrigin><XYScale>148923141.92838538</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>0.001</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>102100</WKID><LatestWKID>3857</LatestWKID></ProjectedCoordinateSystem> 20210827 16400400 20210827 16400400 150000000 5000 FGDC OSPC GIS Planner Office of State Planning Coordination Principal Planner/GIS Coordination 302 739 3090 122 Martin Luther King Jr. Blvd., South Dover DE 19901 US miriam.pomilio@state.de.us 20210827 ArcGIS Metadata 1.0 2012 Impervious Surface Data 1st raster digital data 2014-07-02T00:00:00 2021-09-01T00:00:00 FirstMap Department of Technology & Information 801 Silver Lake Blvd Dover DE 19904 FirstMap@delaware.gov US 302-739-9560 OSPC GIS Planner Office of State Planning Coordination Principal Planner/GIS Coordination 302 739 3090 122 Martin Luther King Jr. Blvd., South Dover DE 19901 US miriam.pomilio@state.de.us OSPC GIS Planner <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The State’s first Impervious Surface (IS) dataset was created as a by-product of the previous vendor’s “change detection” image processing update methodology. The resulting impervious surface data, while not of the highest accuracy, was deemed an acceptable representation of IS in the state. The impervious surface data for the 2012 Update was produced to the same level as the State’s previous datasets, per the project requirements. The work was performed by Aerial Information Systems, Inc. (AIS), located in Redlands, California. The 2012 Impervious Surface data layer was created using a combination of Automated Feature Extraction (AFE) techniques and ArcGIS raster data editing tools. Approximately 2,000 image tiles provided complete coverage of the State. These images were composed of four bands (red, blue, green and IR) at a resolution of 1 foot (0.33 meter). The automated feature extraction involved a number of processing steps and the use of two software products: Genie Pro 2.4, by Obervera, Inc., was used to perform the automated feature extraction and Esri’s ArcGIS was used to perform image cleanup and editing tasks. Using Genie Pro 2.4, training sets and solution files were created and prepared on a representative sample of image tiles. Then the training sets and solution files were combined into one master solution file. Using a python script, all image tiles were processed with the master solution file to create new image tiles. Each of the new image tiles was reviewed to verify that processing step was successfully completed. Where processing problems occurred, the image tiles were re-processed. The analyst revised the original training sets and created new solution files to produce a new result image tile. This process was repeated until the processing errors were corrected. Using ArcMap raster processing tools, four raster catalogs were created which closely matched the extent of the 2007 Impervious Surface raster images. Each of these layers were made up of approximately 500 image tiles. The following series of processing steps were run on each of the four layers: The images were resampled from 0.33 meters to match the 1 meter resolution of the original 2007 IS data. Small mis-identified pixels were removed from each of the four images by running them through the following five processes: Majority Filter, Boundary Clean, Region Group, Set Null, and Nibble. The analyst performed a manual review and edit of each image using ArcMap and the ArcScan extension. The final Impervious Surface geodatabase was created and each of the four regional impervious surface raster data files were imported to the geodatabase.</SPAN></P></DIV></DIV></DIV> Update the State of Delaware's existing 2007 Impervious Surface data layer to 2012 conditions. To identify impervious surfaces for the purpose of modeling such as stormwater, and atmospheric pollutant modeling. The dataset is suitable for many planning and modeling purposes but its primary purpose was to aid in the development of the 2012 Land Use Land Cover Update. Mapped by Aerial Information Systems, Inc. of Redlands, California for the Delaware Office of State Planning OSPC GIS Planner State of Delaware, Office of Management and Budget Principal Planner 302-739-3090 302-739-6958 Suite 302, Haslet Building, Third Floor 122 William Penn Street Dover Delaware 19901 US mike.mahaffie@state.de.us OSPC GIS Planner external 8e4a45af632b3e3742aa56256e9eeef90f25884e FirstMap Delaware Department of Technology and Information (DTI) 801 Silver Lake Blvd Dover DE 19904 US FirstMap@delaware.gov 302-739-9560 FirstMap True FirstMap Delaware Place Thesaurus United States of America (USA), Mid Atlantic, Delaware (DE), Kent County, New Castle County, Sussex County ISO 19115 Topic Categories Imagery, BaseMaps, Earth Cover, Impervious Surface, LandUseLandCover, Structure United States of America (USA) Mid Atlantic Delaware (DE) Kent County New Castle County Sussex County Imagery BaseMaps EarthCover Impervious Surface LandUseLandCover Structure For planning purposes only <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The State of Delaware makes no warranty or representation, expressed or implied, with respect to the quality, content, accuracy, completeness, currency, or non-infringement of proprietary rights, of any of the GIS or other data or information, or any other materials and items, that are displayed or made available for download from this site. All such data, information, items and materials (collectively, the “FirstMap Data”) are provided "as is" and users are fully and solely responsible for any consequences of use. FirstMap Data may have been created from a variety of sources, including sources beyond the control of the State of Delaware, and are subject to change without notice. To the extent you use, apply, add to, modify or implement this information in your own information system or other setting, or otherwise for your own purposes, you do so at your own risk. In no event shall the State of Delaware or its agencies, officers, employees, agents, or representatives be liable for any damages of any kind or nature whatsoever including, but not limited to, direct, indirect, special, punitive, incidental, exemplary or consequential damages arising from your downloading, modifying, sharing, distributing, or using of FirstMap Data even if notified of the possibility of such damages. Further, the State of Delaware does not accept liability for any damages or misrepresentation caused by inaccuracies in the FirstMap Data or as a result of changes to the FirstMap Data, nor is there responsibility assumed to maintain the FirstMap Data in any manner or form.</SPAN></P></DIV></DIV></DIV> Esri ArcGIS 12.8.0.29751 -75.792769 -75.030154 38.45032 39.84187 1 -75.792782 -75.033445 39.841876 38.449841 Flight collection timeframe 2012-03-01T00:00:00 2012-05-11T00:00:00 OSPC GIS Planner Office of State Planning Coordination Principal Planner/GIS Coordination 302 739 3090 122 Martin Luther King Jr. Blvd., South Dover DE 19901 US miriam.pomilio@state.de.us OSPC GIS Planner external 8e4a45af632b3e3742aa56256e9eeef90f25884e FirstMap Delaware Department of Technology and Information (DTI) 801 Silver Lake Blvd Dover DE 19904 US FirstMap@delaware.gov 302-739-9560 FirstMap True FirstMap 2 VAT_PLC_Impervious_2012 Grid cell attributed with Impervious Surface code Table 2 Originator OBJECTID OBJECTID OID 4 0 0 Internal feature number. Esri Sequential unique whole numbers that are automatically generated. VALUE VALUE Integer 4 0 0 Pixel value. 1 = Pervious, 2 = Impervious Originator Static integer value COUNT COUNT Double 8 0 0 Count of pixels Originator Calculated field File Geodatabase Raster Dataset dataset EPSG 6.18.3(9.3.1.2) Pixel 199821 84529 1.000000 1.000000 8 1 Upper Left FALSE LZ77 1 pixel codes FGDBR TRUE row and column 1.000000 1.000000 external 8e4a45af632b3e3742aa56256e9eeef90f25884e FirstMap Delaware Department of Technology and Information (DTI) 801 Silver Lake Blvd Dover DE 19904 US FirstMap@delaware.gov 302-739-9560 FirstMap True FirstMap OSPC GIS Planner Office of State Planning Coordination Principal Planner/GIS Coordination 302 739 3090 122 Martin Luther King Jr. Blvd., South Dover DE 19901 US miriam.pomilio@state.de.us OSPC GIS Planner external 8e4a45af632b3e3742aa56256e9eeef90f25884e FirstMap Delaware Department of Technology and Information (DTI) 801 Silver Lake Blvd Dover DE 19904 US FirstMap@delaware.gov 302-739-9560 FirstMap True FirstMap 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