This web map leverages the KyFromAbove 5 foot Digital Elevation Model (DEM) ArcGIS Server Image Service and provides a 5K tiling grid with embedded links for downloading individual DEM tiles from Phase 1, Phase 2 and Phase3 collection periods. Each of the Phase1 DEM tiles are provided in an ERDAS Imagine (IMG) format and is zipped up with its associated metadata file in XML format. Phase2 and Phase3 DEM tiles are provided in a GeoTIFF format. The Phase1 data resource was derived from the ground class within KyFromAbove point cloud data and has a 5-foot point spacing. The Phase2 and Phase3 data was derived from the ground class within KyFromAbove point cloud data and has a 2-foot point spacing. DEM data specifications adopted by the KyFromAbove Technical Advisory Committee can be found here. More information regarding this data resource can be found on the KyFromAbove website.

This Dynamic Image Service provides access to a seamless 5-Foot Digital Elevation Model (DEM) for all of Kentucky. This elevation data was acquired through the KyFromAbove Aerial Photography and Elevation Data Program which began in 2012. Complete statewide coverage was achieved in 2017 and Phase2 acquisitions are now underway. The DEM was derived from the ground class within KyFromAbove point cloud data and has a 5-foot point spacing. Kentucky's DEM data specifications were developed by the KyFromAbove Technical Advisory Subcommittee and adopted by the Kentucky Geographic Information Advisory Council (GIAC). More information regarding this data resource can be found on the KyGeoPortal and the KyFromAbove webpage.Special thanks to the many KyFromAbove Program Contributors.

The vertical land change activity focuses on the detection, analysis, and explanation of topographic change. These detection techniques include both quantitative methods, for example, using difference metrics derived from multi-temporal topographic digital elevation models (DEMs), such as, light detection and ranging (lidar), National Elevation Dataset (NED), Shuttle Radar Topography Mission (SRTM), and Interferometric Synthetic Aperture Radar (IFSAR), and qualitative methods, for example, using multi-temporal aerial photography to visualize topographic change. The geographic study area of this activity is Perry County, Kentucky. Available multi-temporal lidar, NED, SRTM, IFSAR, and other topographic elevation datasets, as well as aerial photography and multi-spectral image data were identified and downloaded for this study area county. Available mine maps and mine portal locations were obtained from the Kentucky Mine Mapping Information System, Division of Mine Safety, 300 Sower Boulevard, Frankfort, KY 40601 at http://minemaps.ky.gov/Default.aspx?Src=Downloads. These features were used to spatially locate the study areas within Perry County. Previously developed differencing methods (Gesch, 2006) were used to develop difference raster datasets of NED/SRTM (1950-2000 date range) and SRTM/IFSAR (2000-2008 date range). The difference rasters were evaluated to exclude difference values that were below a specified vertical change threshold, which was applied spatially by National Land Cover Dataset (NLCD) 1992 and 2006 land cover type, respectively. This spatial application of the vertical change threshold values improved the overall ability to detect vertical change because threshold values in bare earth areas were distinguished from threshold values in heavily vegetated areas. Lidar high-resolution (1.5 m) DEMs were acquired for Perry County, Kentucky from U.S. Department of Agriculture, Natural Resources Conservation Service Geospatial Data Gateway at https://gdg.sc.egov.usda.gov/GDGOrder.aspx#. ESRI Mosaic Datasets were generated from lidar point-cloud data and available topographic DEMs for the specified study area. These data were analyzed to estimate volumetric changes on the land surface at three different periods with lidar acquisitions collected for Perry County, KY on 3/29/12 to 4/6/12. A recent difference raster dataset time span (2008-2012 date range) was analyzed by differencing the Perry County lidar-derived DEM and an IFSAR-derived dataset. The IFSAR-derived data were resampled to the resolution of the lidar DEM (approximately 1-m resolution) and compared with the lidar-derived DEM. Land cover based threshold values were applied spatially to detect vertical change using the lidar/IFSAR difference dataset. Perry County lidar metadata reported that the acquisition required lidar to be collected with an average of 0.68 m point spacing or better and vertical accuracy of 15 cm root mean square error (RMSE) or better. References: Gesch, Dean B., 2006, An inventory and assessment of significant topographic changes in the United States Brookings, S. Dak., South Dakota State University, Ph.D. dissertation, 234 p, at https://topotools.cr.usgs.gov/pdfs/DGesch_dissertation_Nov2006.pdf.

This dynamic map service provides access to 5K data tiles for the Commonwealth of Kentucky. The Commonwealth manages its elevation data (DEM) holdings using this grid. Information regarding year acquired is included in the attributes.

This dataset represents statewide spot elevation points which are based upon Phase 1 LiDAR-derived elevation data acquired through the Kentucky Aerial Photography and Elevation Data Program (KYAPED), commonly known as KyFromAbove. Appropriate scale for this dataset is 1:24,000 and was created specifically for the KyTopo map series products. All elevation values are recorded in feet above mean sea level and can be found in the Elevation and RASTERVALU fields in the attribute table. Online Linkage: https://ky.box.com/v/kymartian-KyTopo-SpotElev/

The KyFromAbove Phase2 collection provides access to a 2 Foot Digital Elevation Model (DEM) for Kentucky. Phase2 began in 2019 and was completed in 2024. Phase3 acquisitions are now underway.The DEM was derived from the ground class within KyFromAbove point cloud data and has a 2-foot point spacing. Kentucky's DEM data specifications were developed by the KyFromAbove Technical Advisory Subcommittee and adopted by the Kentucky Geographic Information Advisory Council (GIAC). More information regarding this data resource can be found on the KyFromAbove webpage.Special thanks to the many KyFromAbove Program Contributors.

This coverage was derived from U.S. Geological Survey National Elevation Dataset (NED) Digital Elevation Models (DEMs) for all of Ohio and portions of Indiana, Michigan, Kentucky, West Virginia, Pennsylvania, and New York. The dataset is a raster grid coverage representing a 30 meter grid cell size, or 1-arc second, and is in units of decimeters. The various NED source datasets used to create this dataset came primarily from state agencies who provide such data free of any fees or charges. More information about NED data can be found at http://gisdata.usgs.net/NED/default.asp.

The KyFromAbove initiative is focused on building and maintaining a current basemap for Kentucky that can meet the needs of its users at the state, federal, local, and regional level. A common basemap, including current color leaf-off aerial photography and elevation data (LiDAR), reduces the cost of developing GIS applications, promotes data sharing, and add efficiencies to many business processes. All basemap data acquired through this effort is being made available in the public domain. KyFromAbove acquires aerial imagery and LiDAR during leaf-off conditions in the Commonwealth. The imagery typically ranges from 6-inches to 3-inches in resolution and is available from the kyfromabove Amazon S3 bucket in a Cloud Optimized GeoTiff format. LiDAR data acquired by the program is USGS Quality Level 2 (QL2). Digital Elevation Models (DEMs) at a 2-foot resolution, point cloud data in an LAS format, spot elevations in a geopackage format, and contours in a geopackage format are also available from the kyfromabove Amazon S3 bucket. KyFromAbove LiDAR and imagery data resources are managed in a Kentucky-specific 5000x5000 foot grid (FIPS:1600) (EPSG:3089). More details about the program can be found at (https://kyfromabove.ky.gov/)

These data are bathymetry (lake bottom elevation) in XYZ format (Easting, Northing, Elevation), generated from the May 30–June 1, 2023, bathymetric survey of Buckhorn Lake, Kentucky, from the dam to CR-1475 (19.5 miles total reach length). Hydrographic data were collected using a RESON 210 kHz NaviSound single-beam echosounder (SBES) with a Hemisphere A222 integrated global navigation satellite system (GNSS) smart antenna. The SBES and GNSS antenna were mounted on a marine survey vessel, and data were collected as the survey vessel traversed the lake along planned survey lines. A total of 380 survey lines were oriented approximately perpendicular to the primary flow direction at generally 250-foot or 500-foot spacing. Data collection software (HYPACK) integrated and stored the depth and position data from the SBES and GNSS antenna in real time. Water-surface elevations were measured at the boat ramp at the dam twice a day (before and after surveying) with a Trimble R8 survey-grade integrated GNSS system with real-time kinematic (RTK) observations to convert measured bathymetric depths to elevations referenced to the North American Vertical Datum of 1988 (NAVD 88). RTK observations were made using the Kentucky Continually Operating Reference System (KYCORS) network operated by the Kentucky Transportation Cabinet. Data processing required computer software to extract the bathymetric data from the raw data files and to compile and map the information. The final comma-delimited file contains columns of Easting and Northing in feet North American Datum of 1983 (NAD83) Kentucky State Plane Single Zone (FIPS code 1600), and Elevation in feet NAVD 88. This dataset was collected in cooperation with the U.S. Army Corps of Engineers – Louisville District.

The KyFromAbove Phase3 collection provides access to a 2 Foot Digital Elevation Model (DEM) for Kentucky. Phase3 began in 2023 and is still underway.The DEM was derived from the ground class within KyFromAbove point cloud data and has a 2-foot point spacing. Kentucky's DEM data specifications were developed by the KyFromAbove Technical Advisory Subcommittee and adopted by the Kentucky Geographic Information Advisory Council (GIAC). More information regarding this data resource can be found on the KyFromAbove webpage.

This feature layer contains a tile index grid attributed with links which allow the user to download tile based digital elevation models (DEMs). The data was collected as part of the Kentucky Aerial Photography and Elevation Data Program (KYAPED). For more information about the program please visit the Kentucky from Above website at https://kygeonet.ky.gov/kyfromabove/Download Link: https://ky.box.com/v/kymartian-kyaped-5k-tile-grids

This dataset represents statewide spot elevation points which are based upon Phase 2 LiDAR-derived elevation data acquired through the Kentucky Aerial Photography and Elevation Data Program (KYAPED), commonly known as KyFromAbove. Appropriate scale for this dataset is 1:24,000 and was created specifically for the KyTopo map series products. All elevation values are recorded in feet above mean sea level and can be found in the Elevation fields in the attribute table. Online Linkage: https://ky.box.com/v/kymartian-KyTopoSpotHeightsP2

Point feature class that comprises the photogrammetrically compiled Spot Heights (SH) or digital elevation model (DEM) for Jefferson County, Kentucky in Spring of 2019. These points serve as the DEM for for generating 2-foot terrain surface contours as part of the LOJIC planimetric and topographic database. All elevations are in U.S. Feet and cast on the North American Vertical Datum (NAVD) of 1988. View detailed metadata.

This dataset represents statewide spot elevation points which are based upon Phase 1 LiDAR-derived elevation data acquired through the Kentucky Aerial Photography and Elevation Data Program (KYAPED), commonly known as KyFromAbove. Appropriate scale for this dataset is 1:24,000 and was created specifically for the KyTopo map series products. All elevation values are recorded in feet above mean sea level and can be found in the Elevation and RASTERVALU fields in the attribute table. Online Linkage: https://ky.box.com/v/kymartian-KyTopo-SpotElev/

This cached web mapping service provides access to a seamless version of the Kentucky Topographic Map Series, also know as KyTopo. The Kentucky-specific map series has newly generated contours, spot elevations, and hillshade based on the KyFromAbove LiDAR-derived DEM. Quadrangle names were developed utilizing a USGS methodology that focuses on the most prominent map features. Public domain data from a variety of state and federal agencies was leveraged to create the map series. All layers utilized during production are available on the KyGeoNet as downloadable data or web mapping services. Updates to this map service will be made on a periodic basis.

This web map allows for the download of KyFromAbove LiDAR data by 5k tile in LAZ format. This point cloud data was acquired during the typical leaf-off acquisition period (winter-spring) over a period of several years and may be provided as LAS version 1.1, 1.2, or 1.4 depending upon the acquisition period. Users will need to download the LAZIP.exe in order to decompress each tile. LiDAR data specifications adopted by the KyFromAbove Technical Advisory Committee can be found here. This is the source data used to create the Commonwealth's 5 foot digital elevation model (DEM) and its associated derivatives. More information regarding this data resource can be found on the KyGeoPortal.

These data are bathymetry (river bottom elevation) in XYZ format (Easting, Northing, Elevation), generated from the September 17–18, 2020, survey of the Kentucky Dam tailwater from just downstream from Kentucky Dam to approximately 1,500 feet upstream from the I-24 bridge (about 1 mile total length). Bathymetric data were collected using an acoustic Doppler current profiler (ADCP) with an integrated global navigation satellite system (GNSS) smart antenna. The ADCP and GNSS antenna were mounted on a marine survey vessel, and data were collected as the survey vessel traversed the tailwater along planned survey lines. There was typically one reciprocal pair (two passes) of data collected per line. There was a total of 53 survey lines equally spaced 100 feet apart and oriented approximately perpendicular to the primary flow direction. Data collection software integrated and stored the depth and position data from the ADCP and GNSS antenna in real time. Water-surface elevations were measured at each planned line throughout the survey area with a survey-grade integrated GNSS system with real-time kinematic (RTK) observations in order to convert measured bathymetric depths to elevations referenced to NAVD 88. RTK observations were made using the Kentucky Continually Operating Reference System (KYCORS) network operated by the Kentucky Transportation Cabinet. Data processing required computer software to extract the bathymetric data from the raw data files and to summarize and map the information.

Terrain data, as defined in FEMA Guidelines and Specifications, Appendix N: Data Capture Standards, describes the digital topographic data that was used to create the elevation data representing the terrain environment of a watershed and/or floodplain. Terrain data requirements allow for flexibility in the types of information provided as sources used to produce final terrain deliverables. Once this type of data is provided, FEMA will be able to account for the origins of the flood study elevation data. (Source: FEMA Guidelines and Specifications, Appendix N, Section N.1.2).

This file geodatabase contains polygon tile index grids attributed with links which allow the user to download Elevation and Aerial Photography data currently available for Kentucky. The Kentucky_5k_PointCloudGrid layer contains tiles where compressed las file are available for download through the Kentucky Geography Network. This data was collected as part of the Kentucky Aerial Photography and Elevation Data Program (KYAPED). For more information about the program please visit the Kentucky from Above website at https://kygeonet.ky.gov/kyfromabove/

This dataset represents statewide spot elevation points which are based upon Phase 2 LiDAR-derived elevation data acquired through the Kentucky Aerial Photography and Elevation Data Program (KYAPED), commonly known as KyFromAbove. Appropriate scale for this dataset is 1:24,000 and was created specifically for the KyTopo map series products. All elevation values are recorded in feet above mean sea level and can be found in the Elevation fields in the attribute table. Online Linkage: https://ky.box.com/v/kymartian-KyTopoSpotHeightsP2