CT 2023 Elevation (DEM) (updates)

This image service is available through <a href='https://cteco.uconn.edu' target='_blank' rel='nofollow ugc noopener noreferrer'>CTECO</a>, a partnership between <a href='https://clear.uconn.edu' target='_blank' rel='nofollow ugc noopener noreferrer'>UConn CLEAR</a> and <a href='https://portal.ct.gov/DEEP/GIS-and-Maps/Data/GIS-DATA' target='_blank' rel='nofollow ugc noopener noreferrer'>CT DEEP</a>. This layer is a hydro-flattened bare earth digital elevation model (DEM) derived from the classified Lidar point cloud covering the state of Connecticut.<div><br /></div><div><div><b>NOTE Service Changes</b></div><div>Although currently displaying 2023 elevation, this service (called <a href='https://cteco.uconn.edu/ctraster/rest/services/elevation/Elevation/ImageServer' target='_blank' rel='nofollow ugc noopener noreferrer'>Elevation</a>) previously displayed 2016 elevation and will be updated when new elevation is available. Visit the CT ECO <a href='https://maps.cteco.uconn.edu/map-services/#elevation' target='_blank' rel='nofollow ugc noopener noreferrer'>Map and Image Services </a>page for a complete list of available elevation services. Connect to this service when you always want the latest and greatest service. Connect to <a href='https://cteco.maps.arcgis.com/home/item.html?id=ad332b05d61f4fb3b17d0070db940c2a' target='_blank' rel='nofollow ugc noopener noreferrer'>CT 2023 Elevation (DEM</a>) service for 2023 elevation that will not change. </div><div><br /><div><div><font color='#104c9b'><b>2023 Statewide </b></font><br /></div><div><div><b>Extent:</b> Connecticut</div><div><b>Dates:</b> 2023 (March 27 - April 13), between snow melt and leaf out</div><div><b>Data Info:</b> statewide Digital Elevation Model (DEM), which is a bare earth elevation raster with no functions applied </div><div><b>Pixel Resolution: </b>2 foot DEM raster derived from QL1+ Lidar point cloud with a minimum of 15 points per square meter inland and 20 points per square meter along the coast. The bare earth elevation from the points were averaged to get the elevation value for each pixel in the DEM. </div><div><b>Projection: </b>CT State Plane NAD 83 (2011) Feet (EPSG 6434)<br /></div></div><div><b>Service Projection:</b> WGS 1984 Web Mercator Auxiliary Sphere (EPSG 3857)<br /></div><div><br /></div><div><b><font color='#104C9B'>More Information</font></b></div><div>- <a href='https://maps.cteco.uconn.edu/data/flight2023/' target='_blank' rel='nofollow ugc noopener noreferrer'>All About the 2023 Data Collection</a> (Imagery and Lidar)</div><div>- <a href='https://maps.cteco.uconn.edu/data/lidar/' target='_blank' rel='nofollow ugc noopener noreferrer'>All about Connecticut Lidar Elevation</a></div><div>- <a href='https://maps.cteco.uconn.edu/data/lidar/elevation_explained/' target='_blank' rel='nofollow ugc noopener noreferrer'>Lidar Elevation on CT ECO Explained</a></div><div>- <a href='https://cteco.uconn.edu/download/metadata/CT_DEM_2023_metadata.htm' target='_blank' rel='nofollow ugc noopener noreferrer'>Metadata</a>  <a href='https://cteco.uconn.edu/download/metadata/CT_DEM_2023_metadata.xml' target='_blank' rel='nofollow ugc noopener noreferrer'>xml format</a></div><div>- <a href='https://maps.cteco.uconn.edu/download/' target='_blank' rel='nofollow ugc noopener noreferrer'>Download DEM and points</a></div><div><br /></div><div><b><font color='#104C9B'>Tips</font></b><br /></div><div>- The elevation service contains <a href='https://maps.cteco.uconn.edu/data/lidar/functions/' target='_blank' rel='nofollow ugc noopener noreferrer'>processing templates</a> like hillshade, slope, and aspect, that can be applied to change the appearance of the layer. <br /></div><div>- Symbology is another useful and easy way to display the elevation differently. </div><div><br /></div><div><div><b><font color='#104C9B'>Credit and Funding</font></b></div></div></div></div><div><b><font color='#104C9B'><br /></font></b></div><div><b><font color='#104C9B'><br /></font><