2007 DTM - Township 46N Range 9E

This dataset has been deprecated. Please use our 2017 Digital Elevation Models instead.The Digital Terrain Model (DTM) is a 3.28 foot pixel resolution raster in GeoTIFF format upsampled to 2.5 feet to preserve detail. This was created using the ground (class = 2) lidar points and incorporating the breaklines.

The DTMs 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 to determine ground elevation. 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). The use of LiDAR significantly reduces the cost for developing this information.

The DTMs are intended to correspond to the orthometric heights of the bare surface of the county (no buildings or vegetation cover). DTM data is used by county agencies to study drainage issues such as flooding and erosion; contour generation; slope and aspect; and hill shade images. This dataset was compiled to meet the American Society for Photogrammetry and Remote Sensing (ASPRS) Accuracy Standards for Large-Scale Maps, CLASS 1 map accuracy.

The U.S. Army Corps of Engineers Engineering and Design Manual for Photogrammetric Production recommends that data intended for this usage scale be used for any of the following purposes: route location, preliminary alignment and design, preliminary project planning, hydraulic sections, rough earthwork estimates, or high-gradient terrain / low unit cost earthwork excavation estimates. The manual does not recommend that these data be used for final design, excavation and grading plans, earthwork computations for bid estimates or contract measurement and payment.

This dataset does not take the place of an on-site survey for design, construction or regulatory purposes.

Data e Risorse

Campo Valore
accessLevel public
catalog_@context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
catalog_conformsTo https://project-open-data.cio.gov/v1.1/schema
catalog_describedBy https://project-open-data.cio.gov/v1.1/schema/catalog.json
identifier https://data-lakecountyil.opendata.arcgis.com/documents/lakecountyil::2007-dtm-township-46n-range-9e
issued 2018-02-07T15:38:03.000Z
landingPage https://data-lakecountyil.opendata.arcgis.com/documents/lakecountyil::2007-dtm-township-46n-range-9e
license https://www.arcgis.com/sharing/rest/content/items/89679671cfa64832ac2399a0ef52e414/data
metadata_type geospatial
modified 2022-03-23T20:16:09.000Z
old-spatial -88.2150,42.1580,-87.7810,42.4930
publisher Lake County Illinois GIS
resource-type Dataset
source_datajson_identifier true
source_hash bc0ec9661d79cd9a121f1e4bca00a5a47eb3b161
source_schema_version 1.1
spatial {"type": "Polygon", "coordinates": [[[-88.2150, 42.1580], [-88.2150, 42.4930], [-87.7810, 42.4930], [-87.7810, 42.1580], [-88.2150, 42.1580]]]}
theme {geospatial}
Gruppi
  • AmeriGEOSS
  • National Provider
  • North America
Tag
  • 3d
  • amerigeo
  • amerigeoss
  • bare-earth
  • breaklines
  • ckan
  • digital-surface-model
  • digital-terrain-model
  • dtm
  • elevation
  • geo
  • geoss
  • hydro-flattened
  • lake-county-illinois
  • las
  • laser
  • lidar
  • light-detection-and-ranging
  • national
  • north-america
  • point-cloud
  • surface-model
  • tin
  • topography
  • triangulated-irregular-network
  • united-states
isopen False
license_id other-license-specified
license_title other-license-specified
maintainer LakeCounty_Illinois
maintainer_email gis@lakecountyil.gov
metadata_created 2025-11-22T22:01:50.710869
metadata_modified 2025-11-22T22:01:50.710873
notes <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='margin-top:0in; margin-right:0in; margin-bottom:7.5pt; margin-left:0in; background:white;'><span style='font-family:&quot;Helvetica&quot;,sans-serif; color:#4C4C4C;'>The Digital Terrain Model (DTM) is a 3.28 foot pixel resolution raster in GeoTIFF format upsampled to 2.5 feet to preserve detail. This was created using the ground (class = 2) lidar points and incorporating the breaklines.</span></p> <p style='margin-top:0in; margin-right:0in; margin-bottom:7.5pt; margin-left:0in; background:white; font-variant-ligatures:normal; font-variant-caps:normal; text-align:start; text-decoration-style:initial; text-decoration-color:initial; box-sizing:border-box; word-spacing:0px;'><span style='font-family:&quot;Helvetica&quot;,sans-serif; color:#4C4C4C;'>The DTMs 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 to determine ground elevation. 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). The use of LiDAR significantly reduces the cost for developing this information.</span></p> <p style='margin-top:0in; margin-right:0in; margin-bottom:7.5pt; margin-left:0in; background:white; font-variant-ligatures:normal; font-variant-caps:normal; text-align:start; text-decoration-style:initial; text-decoration-color:initial; box-sizing:border-box; word-spacing:0px;'><span style='font-family:&quot;Helvetica&quot;,sans-serif; color:#4C4C4C;'>The DTMs are intended to correspond to the orthometric heights of the bare surface of the county (no buildings or vegetation cover). DTM data is used by county agencies to study drainage issues such as flooding and erosion; contour generation; slope and aspect; and hill shade images. This dataset was compiled to meet the American Society for Photogrammetry and Remote Sensing (ASPRS) Accuracy Standards for Large-Scale Maps, CLASS 1 map accuracy.</span></p> <p style='margin-top:0in; margin-right:0in; margin-bottom:7.5pt; margin-left:0in; background:white; font-variant-ligatures:normal; font-variant-caps:normal; text-align:start; text-decoration-style:initial; text-decoration-color:initial; box-sizing:border-box; word-spacing:0px;'><span style='font-family:&quot;Helvetica&quot;,sans-serif; color:#4C4C4C;'>The U.S. Army Corps of Engineers <a href='https://www.publications.usace.army.mil/Portals/76/Publications/EngineerManuals/EM_1110-1-1000.pdf' rel='nofollow ugc' style='box-sizing:border-box;'><span style='color:#428BCA;'>Engineering and Design Manual for Photogrammetric Production</span></a> recommends that data intended for this usage scale be used for any of the following purposes: route location, preliminary alignment and design, preliminary project planning, hydraulic sections, rough earthwork estimates, or high-gradient terrain / low unit cost earthwork excavation estimates. The manual does not recommend that these data be used for final design, excavation and grading plans, earthwork computations for bid estimates or contract measurement and payment.</span></p> <p style='margin-top:0in; margin-right:0in; margin-bottom:7.5pt; margin-left:0in; background:white; font-variant-ligatures:normal; font-variant-caps:normal; text-align:start; text-decoration-style:initial; text-decoration-color:initial; box-sizing:border-box; word-spacing:0px;'><span style='font-family:&quot;Helvetica&quot;,sans-serif; color:#4C4C4C;'>This dataset does not take the place of an on-site survey for design, construction or regulatory purposes.</span></p>
num_resources 2
num_tags 26
title 2007 DTM - Township 46N Range 9E