2007 DSM - Township 44N Range 9E

<p><b><font size='4'>This dataset has been deprecated. Please use our <a href='https://data-lakecountyil.opendata.arcgis.com/search?tags=2017%20digital%20elevation%20model' rel='nofollow ugc' target='_blank'>2017 Digital Elevation Models</a> instead.</font></b></p><p style='box-sizing:border-box; margin-top:0px; margin-bottom:10px; font-family:&quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; background-color:rgb(255, 255, 255);'>The Digital Surface Model (DSM) is a 3-foot pixel resolution raster in GeoTIFF format. This was created using all points (excluding NOISE) from our 2007 LiDAR data without incorporating the breaklines. Merrick and Co. MARS (ver. 8.0.4, build 8185) software was used to create the GeoTIFF images.</p><p style='box-sizing:border-box; margin-top:0px; margin-bottom:10px; font-family:&quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; background-color:rgb(255, 255, 255);'>The DSMs were developed using LiDAR data. LiDAR is an acronym for LIght Detection And Ranging. Light detection and ranging is the science of using a laser to measure distances to specific points. A specially equipped airplane with positioning tools and LiDAR technology was used to measure the distance to the surface of the earth. The classified points were developed using data collected in April to May 2007. The LiDAR points, specialized software, and technology provide the ability to create a high precision three-dimensional digital elevation and/or terrain models (DEM/DTM) as well as digital surface models (DSM). The use of LiDAR significantly reduces the cost for developing this information.</p><p style='box-sizing:border-box; margin-top:0px; margin-bottom:10px; font-family:&quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; background-color:rgb(255, 255, 255);'>The DSMs are intended to correspond to the orthometric heights of the surface of the county including above ground features such as buildings, vegetation cover, utility structures, vehicles ... etc. DSM data are used by county agencies and others to study drainage issues such as flooding and erosion; contour generation; slope and aspect; and hill shade images. Elevation data and models are used in several different ways including:</p><p style='box-sizing:border-box; margin-top:0px; margin-bottom:10px; font-family:&quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; background-color:rgb(255, 255, 255);'>Visualization representations of the elevation data. Examples include:</p><p style='box-sizing:border-box; margin-top:0px; margin-bottom:10px; font-family:&quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; background-color:rgb(255, 255, 255);'>-	A hillshaded or shaded relief image</p><p style='box-sizing:border-box; margin-top:0px; margin-bottom:10px; font-family:&quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; background-color:rgb(255, 255, 255);'>-	An image representing slope</p><p style='box-sizing:border-box; margin-top:0px; margin-bottom:10px; font-family:&quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; background-color:rgb(255, 255, 255);'>-	An image representing aspect</p><p style='box-sizing:border-box; margin-top:0px; margin-bottom:10px; font-family:&quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; background-color:rgb(255, 255, 255);'>Analysis of the elevation data and analytical products which can be generated. Examples include:</p><p style='box-sizing:border-box; margin-top:0px; margin-bottom:10px; font-family:&quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; background-color:rgb(255, 255, 255);'>-	Viewshed calculations for visibility and line-of-sight analysis</p><p style='box-sizing:border-box; margin-top:0px; margin-bottom:10px; font-family:&quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; background-color:rgb(255, 255, 255);'>-	Areas of highest Solar energy potential</p><p style='box-sizing:border-box; margin-top:0px; margin-bottom:10px; font-family:&quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; background-color:rgb(255, 255, 255);'>-	Uses in disaster management</p><p style='box-sizing:border-box; margin-top:0px; margin-bottom:10px; font-family:&quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; background-color:rgb(255, 255, 255);'>-	Industrial planning</p><p style='box-sizing:border-box; margin-top:0px; margin-bottom:10px; font-family:&quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; background-color:rgb(255, 255, 255);'>-	Calculation of cartographic contours</p><p style='box-sizing:border-box; margin-top:0px; margin-bottom:10px; font-family:&quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; background-color:rgb(255, 255, 255);'>-	Calculation of profiles along straight lines or line segments</p><p style='box-sizing:border-box; margin-top:0px; margin-bottom:10px; font-family:&quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; background-color:rgb(255, 255, 255);'>These data are derived from other data sources, no accuracy measurements or tests were conducted. Primary use and intent for these data are for visualizations and topographic analysis. This dataset does not take the place of an on-site survey for design, construction or regulatory purposes.</p>

Tags: 3d, bare-earth, breaklines, contours, digital-elevation-model, digital-surface-model, dsm, elevation, hydro-flattened, lake-county-illinois, las, laser, lidar, light-detection-and-ranging, point-cloud, surface-model, tin, topography, triangulated-irregular-network
Organization: Lake County, Illinois