Historic LIDAR Projects within New York State. New York State has access to and distributes many of the older LIDAR collections within New York State. These historic projects have been fully replaced with more recent LIDAR projects. More information for existing LIDAR collections can be found at https://gis.ny.gov/lidar. Last updated 8/2/24.Feature and map services available:https://elevation.its.ny.gov/arcgis/rest/services/indexes/Historic_LiDAR_Collections/FeatureServerhttps://elevation.its.ny.gov/arcgis/rest/services/indexes/Historic_LiDAR_Collections/MapServerFor Latest Collections, see:https://elevation.its.ny.gov/arcgis/rest/services/indexes/Latest_LiDAR_Collections/FeatureServerhttps://elevation.its.ny.gov/arcgis/rest/services/indexes/Latest_LiDAR_Collections/MapServerPlease contact nysgis@its.ny.gov if you have any questions.

This map features a topographical map of the City and County of New York, and the adjacent Country from 1836. The map is overlayed on a contemporary topographic map of New York City and the surrounding area for comparison purposes.More information on this map …

Summary of the surface elevation data collection project in Putnam County, NY (NYSDEC) 2008. Products generated include LiDAR point data in LAS Binary format v1.1. In the spring of 2008, The Sanborn Map Company, Inc. (Sanborn) acquired 111 square miles of terrestrial LiDAR data in Putnam County, NY. An Optech ALTM 2050 Airborne LiDAR sensor was used for the collection. The LiDAR data associat...

Bathymetry for the Hudson River was derived from twenty surveys containing 120,771 soundings. No surveys were omitted. The average separation between soundings was 51 meters. The surveys dated from 1930 to 1945. The total range of sounding data was 1.5 meters to -61.9 meters at mean low water. Mean high water values between 0.8 and 1.5 meters were assigned to the shoreline. Eleven points were found that were not consistent with the surrounding data. These were removed prior to tinning. DEM grid values outside the shoreline (on land) were assigned null values (-32676). The Hudson River has eighteen 7.5 minute DEMs and four one degree DEMs. The 1 degree DEMs were generated from the higher resolution 7.5 minute DEMs which covered the estuary. A Digital Elevation Model (DEM) contains a series of elevations ordered from south to north with the order of the columns from west to east. The DEM is formatted as one ASCII header record (A- record), followed by a series of profile records (B- records) each of which include a short B-record header followed by a series of ASCII integer elevations (typically in units of 1 centimeter) per each profile. The last physical record of the DEM is an accuracy record (C-record). The 7.5-minute DEM (30- by 30-m data spacing) is cast on the Universal Transverse Mercator (UTM) projection. It provides coverage in 7.5- by 7.5-minute blocks. Each product provides the same coverage as a standard USGS 7.5-minute quadrangle but the DEM contains over edge data. Coverage is available for many estuaries of the contiguous United States but is not complete.

DEM Bare Earth Tile Indexes for each LiDAR project. The “DIRECT_DL” field contains a hyperlink to download the associated IMG files. More information for existing DEM collections can be found at https://gis.ny.gov/nys-dem. Service last updated 7/26/24Feature and map services available:https://elevation.its.ny.gov/arcgis/rest/services/Dem_Indexes/FeatureServerhttps://elevation.its.ny.gov/arcgis/rest/services/Dem_Indexes/MapServer

Please contact NYS ITS Geospatial Services at nysgis@its.ny.gov if you have any questions.

The NYS Hillshade was created by the NYS ITS Geospatial Services and is generated using the latest Bare Earth DEMs with the Statewide USGS 10 Meter DEM to fill in gaps where higher resolution models currently do not exist. The 10 Meter hillshade is visible at all levels and high resolution hillshades turn on under 1:500,000. Last Updated 02/18/2022, with the NYS Central Finger Lakes project.

Map service url - https://elevation.its.ny.gov/arcgis/rest/services/NYS_Statewide_Hillshade/MapServerPlease contact NYS ITS Geospatial Services at nysgis@its.ny.gov if you have any questions.

This map features a topographical map of the City and County of New York, and the adjacent Country from 1836. The map is overlayed on a contemporary topographic map of New York City and the surrounding area for comparison purposes.More information on this map …

The Building Elevation and Subgrade data contains New York City building centroids derived from the Department of Building's (DOB) February 26th, 2022 building footprint dataset. Each record contains a grade and first floor measurement for each building (recorded as feet above sea-level in the NADV88 vertical datum) and indicates if subgrade space exists. DCP contracted with an external data vendor to generate a single point, or centroid, that represented the location of the center of every building recorded in the DOB dataset. The dataset excluded the footprints of small accessory buildings such as sheds. Each row within the dataset represents one building centroid, and records the X and Y coordinates of that centroid in the NAD 1983 coordinate system.

Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features.

A list of the final section maps that would show the legal street information for Borough of Brooklyn.

Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features.

Latest LIDAR Projects required for statewide within New York State. More information for existing LIDAR collections can be found at https://gis.ny.gov/lidar. Last updated 8/2/24.Feature and map services available:https://elevation.its.ny.gov/arcgis/rest/services/indexes/Latest_LiDAR_Collections/FeatureServerhttps://elevation.its.ny.gov/arcgis/rest/services/indexes/Latest_LiDAR_Collections/MapServerFor Historic Collections, see:https://elevation.its.ny.gov/arcgis/rest/services/indexes/Historic_LiDAR_Collections/FeatureServerhttps://elevation.its.ny.gov/arcgis/rest/services/indexes/Historic_LiDAR_Collections/MapServerPlease contact nysgis@its.ny.gov if you have any questions.

The New York State Departments of Environmental Conservation and Health are concerned about groundwater contamination in the carbonate-bedrock aquifers with the potential to host karst features throughout New York State, especially relating to the unintended introduction of chemical or agricultural contamination into these aquifers. USGS Scientific Investigations Report, SIR 2020-5030 (Kappel and others, 2020), provides local and State regulators and the public the information needed to determine the extent of carbonate bedrock in New York, the associated environmental impacts of karst, and the means to protect New York’s karst water resources. The four geodatabases presented in this data release were compiled in support of SIR 2020-5030. Closed depression-focused recharge is one potential pathway for aquifer contamination. A closed depression is any enclosed area that has no surface drainage outlet and from which water escapes only by evaporation or subsurface drainage. On a topographic map a closed depression is typically represented by a hachured contour line forming a closed loop. The map representation applies to closed depressions of both natural and anthropogenic origin. Closed depressions formed by natural processes need not be karst in origin to represent a source of focused-recharge. Three of the four geodatabases in this data release form a comprehensive inventory of all closed depressions, natural and anthropogenic, within the State which are proximal to carbonate, evaporite, or marble units and that have the potential for developing karst features. The fourth geodatabase in this data release contains a digital representation of the study area boundary adopted for the GIS analyses. The three closed depression inventory geodatabases were compiled in the following order: 1) Digital Contour Database of Closed Depressions, 2) Digital Raster Graphic Database of Closed Depressions, and 3) LiDAR Database of Closed Depressions. There is no duplication of features among these three geodatabases. Additionally, the closed depressions inventoried for this data release, were compared with closed depressions mapped in other published geospatial data to eliminate duplication with those datasets. The datasets referenced were the New York State Department of Environmental Conservation Mining Database and the National Hydrography Dataset waterbody features. The Digital Contour Database of Closed Depressions contains features derived from data associated with U.S. Geological Survey Scientific Investigations Report 2012–5167. The source data is a statewide contour dataset that was generated from the National Elevation Dataset (NED) and the National Hydrography Dataset (NHD) in a fully automated process. Closed depressions included in the Digital Raster Graphic Database of Closed Depressions were digitized from an assemblage of approximately 650 Digital Raster Graphic (DRG) images of scanned U.S. Geological Survey 1:24,000-scale topographic maps. A DRG is a scanned image of a U.S. Geological Survey topographic map that can be added as a background layer in a GIS. The LiDAR Database of Closed Depressions contains features generated from high-resolution LiDAR-derived bare-earth DEMs obtained from the New York State Office of Information Technology Services. At the time of analysis (2017) LiDAR data existed for approximately 65 percent of the study area. The DEMs were processed to identify depressions with an area of at least 4,047 square meters (1-acre) and a depth of at least 1-meter. These threshold values are greater than what is typically used for lidar-based sinkhole identification studies. For the purpose of this study, the use of lidar was primarily intended to identify closed depressions that were not represented in the Digital Raster Graphic Database, in the same manner that the DRG images were used to identify closed depressions not represented in the Digital Contour Database. For that reason, the threshold values were based on random sampling of DRG-derived closed depressions within the study area and represent the approximate mean geometric characteristics of the closed depressions sampled. For ongoing and planned larger-scale county-based assessments in New York, the thresholds will be reduced to 10- and 30-centimeters depth and 100 square meters.

These files contain classified topo/bathy lidar data generated from data collected by the Coastal Zone Mapping and Imaging Lidar (CZMIL) system. CZMIL integrates a lidar sensor with simultaneous topographic and bathymetric capabilities, a digital camera and a hyperspectral imager on a single remote sensing platform for use in coastal mapping and charting activities. Native lidar data is not gen...

This child item data set contains grids of water surface elevation for inundated areas derived from flood-inundation maps for the Schoharie Creek in North Blenheim, New York.

Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features.

Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features.

Link to the ScienceBase Item Summary page for the item described by this metadata record. Service Protocol: Link to the ScienceBase Item Summary page for the item described by this metadata record. Application Profile: Web Browser. Link Function: information

Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features.

Layered GeoPDF 7.5 Minute Quadrangle Map. Layers of geospatial data include orthoimagery, roads, grids, geographic names, elevation contours, hydrography, and other selected map features.