<p>The SACS Tier 1 Environmental Exposure Index depicts a
weighted aggregate of national GIS datasets related to administration and
identification of high value environmental resources, within the SACS study
area. The input datasets were identified during the USACE North Atlantic Coast
Comprehensive Study (NACCS), with a few additional datasets in the Audubon
Important Bird Areas, and National Estuarine Research Reserves. These data were
clipped to the SACS study area and weighted consistently with the NACCS effort:
Page 109 <a href='https://www.nad.usace.army.mil/Portals/40/docs/NACCS/NACCS_Appendix_C.pdf' rel='nofollow ugc'>https://www.nad.usace.army.mil/Portals/40/docs/NACCS/NACCS_Appendix_C.pdf</a>.
These data were then converted to a uniform grid based on the NACCS weighting,
and summed. The resulting raster was then normalized between 0 and 1, with 1
containing the highest value, or the most overlapping datasets. The resulting
index is displayed with a stretch symbology, percent clip (min -.5 max .5). The
grid resolution is 30m.</p>

<p>Input datasets, weighting, and download locations are
referenced as follows:</p>

<p>USFWS - <a href='https://www.fws.gov/GIS/data/national/index.html' rel='nofollow ugc'><i><span style='mso-bidi-font-family:Calibri;mso-bidi-theme-font:minor-latin'>https://www.fws.gov/GIS/data/national/index.html</span></i></a><i><span style='mso-bidi-font-family:Calibri;
mso-bidi-theme-font:minor-latin;color:#1F4E79;mso-themecolor:accent1;
mso-themeshade:128'><br />
</span></i>Coastal Barrier Islands under CBRA – Weight - 91<br />
Rare, Threatened, and Endangered Species – Weight - 86<br />
Refuges – Weight 89</p>

<p>TNC - <a href='https://maps.tnc.org/gis_data.html' rel='nofollow ugc'><i><span style='mso-ascii-font-family:Calibri;
mso-ascii-theme-font:minor-latin;mso-hansi-font-family:Calibri;mso-hansi-theme-font:
minor-latin;mso-bidi-font-family:Calibri;mso-bidi-theme-font:minor-latin'>https://maps.tnc.org/gis_data.html</span></i></a><i><span style='mso-ascii-font-family:Calibri;
mso-ascii-theme-font:minor-latin;mso-hansi-font-family:Calibri;mso-hansi-theme-font:
minor-latin;mso-bidi-font-family:Calibri;mso-bidi-theme-font:minor-latin;
color:#1F4E79;mso-themecolor:accent1;mso-themeshade:128'></span></i></p>

<p>Conservation Areas – Weight - 73</p>

<p>NOAA - <a href='https://coast.noaa.gov/digitalcoast/data/nerr.html' rel='nofollow ugc'><span style='font-size:10.0pt;line-height:107%;mso-fareast-font-family:&quot;Times New Roman&quot;;
mso-bidi-font-family:Calibri;mso-bidi-theme-font:minor-latin'>https://coast.noaa.gov/digitalcoast/data/nerr.html</span></a><br />
National Estuarine Research Reserves – Weight - 75</p>

<p>Audubon- <a href='https://www.audubon.org/important-bird-areas' rel='nofollow ugc'><span style='font-size:
10.0pt;line-height:107%;mso-bidi-font-family:Calibri;color:blue'>https://www.audubon.org/important-bird-areas</span></a><br />
Important Bird Areas – Weight 75</p>

<p>DHS <br />
City, County, State and Federal Parks &gt; 100 Acres – Weight - 44</p>
None
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