An overview to help users find and access data

Collection of links to various forms of spatial data for New York State and other areas; includes Digital Elevation Models, Digital Line Graphs, Geologic Maps, water/hydrology information, land cover/use data, soil information. Some links have data, some don't.

Earth Data Analysis Center (EDAC) at The University of New Mexico (UNM) develops, manages, and enhances the New Mexico Resource Geographic Information System (RGIS) Program and Clearinghouse. Nationally, NM RGIS is among the largest of state-based programs for digital geospatial data and information and continues to add to its data offerings, services, and technology.

The RGIS Program mission is to develop and expand geographic information and use of GIS technology, creating a comprehensive GIS resource for state and local governments, educational institutions, nonprofit organizations, and private businesses; to promote geospatial information and GIS technology as primary analytical tools for decision makers and researchers; and to provide a central Clearinghouse to avoid duplication and improve information transfer efficiency.

As a repository for digital geospatial data acquired from local and national public agencies and data created expressly for RGIS, the clearinghouse serves as a major hub in New Mexico’s network for inter-agency and intergovernmental coordination, data sharing, information transfer, and electronic communication. Data sets available for download include political and administrative boundaries, place names and locations, census data (current and historical), 30 years of digital orthophotography, 80 years of historic aerial photography, satellite imagery, elevation data, transportation data, wildfire boundaries and natural resource data.

2018 Otho imagery for Tompkins County and individual municipalities updated December 2/12/2019 please note imagery were flown in Spring of 2018.

Publication Date: May 2025.

This link is to a group where ArcGIS Online organizations from across the Commonwealth have provided access to the their homepage and publicly shared content.The Virginia GIS Clearinghouse hosts a wealth of data and metadata for Virginia datasets made available through state agencies, local governments, and others.

Metadata record for the Montana GIS Clearinghouse. Link in record.

This Basic Viewer is intended to allow users to view datasets maintained by NYS Geospatial Services. These layers are pre-loaded -- to explore our datasets, select the “Layers” button. Visitors can also add data from the GIS Clearinghouse, URL data layers, or their own local GIS data by selecting the “Add Data” button. Where counties share their parcel data, parcels may be viewed as well.The Basic Viewer App now includes a Surveyor Bookmark with reference data and survey information. This bookmark allows for a quick way to display data and layers that Surveyors may find useful - NOAA CORS, NGS Sheets, Hillshade, and more.

description: The purpose of the IGDC is to help users find GIS data for the state of Iowa. The site is a cooperative effort between the Iowa Geographic Information Council and local, state, federal and other GIS data producers in Iowa. Users may search by location or topic for available data, many of which have links to where data can be directly downloaded. Data producers are encouraged to register for an account and publish metadata for their GIS data collections so the public can easily find it. The site is maintained by the Iowa State University's GIS Support and Research Facility.; abstract: The purpose of the IGDC is to help users find GIS data for the state of Iowa. The site is a cooperative effort between the Iowa Geographic Information Council and local, state, federal and other GIS data producers in Iowa. Users may search by location or topic for available data, many of which have links to where data can be directly downloaded. Data producers are encouraged to register for an account and publish metadata for their GIS data collections so the public can easily find it. The site is maintained by the Iowa State University's GIS Support and Research Facility.

Publication Date: May 2025.

Click here to access the data directly from the Illinois State Geospatial Data Clearinghouse. These lidar data are processed Classified LAS 1.4 files, formatted to 2,117 individual 2500 ft x 2500 ft tiles; used to create Reflectance Images, 3D breaklines and hydro-flattened DEMs as necessary. Geographic Extent: Lake county, Illinois covering approximately 466 square miles. Dataset Description: WI Kenosha-Racine Counties and IL 4 County QL1 Lidar project called for the Planning, Acquisition, processing and derivative products of lidar data to be collected at a derived nominal pulse spacing (NPS) of 1 point every 0.35 meters. Project specifications are based on the U.S. Geological Survey National Geospatial Program Base Lidar Specification, Version 1.2. The data was developed based on a horizontal projection/datum of NAD83 (2011), State Plane, U.S Survey Feet and vertical datum of NAVD88 (GEOID12B), U.S. Survey Feet. Lidar data was delivered as processed Classified LAS 1.4 files, formatted to 2,117 individual 2500 ft x 2500 ft tiles, as tiled Reflectance Imagery, and as tiled bare earth DEMs; all tiled to the same 2500 ft x 2500 ft schema. Ground Conditions: Lidar was collected April-May 2017, while no snow was on the ground and rivers were at or below normal levels. In order to post process the lidar data to meet task order specifications and meet ASPRS vertical accuracy guidelines, Ayers established a total of 66 ground control points that were used to calibrate the lidar to known ground locations established throughout the WI Kenosha-Racine Counties and IL 4 County QL1 project area. An additional 195 independent accuracy checkpoints, 116 in Bare Earth and Urban landcovers (116 NVA points), 79 in Tall Grass and Brushland/Low Trees categories (79 VVA points), were used to assess the vertical accuracy of the data. These checkpoints were not used to calibrate or post process the data. Users should be aware that temporal changes may have occurred since this dataset was collected and that some parts of these data may no longer represent actual surface conditions. Users should not use these data for critical applications without a full awareness of its limitations. Acknowledgement of the U.S. Geological Survey would be appreciated for products derived from these data. These LAS data files include all data points collected. No points have been removed or excluded. A visual qualitative assessment was performed to ensure data completeness. No void areas or missing data exist. The raw point cloud is of good quality and data passes Non-Vegetated Vertical Accuracy specifications.Link Source: Illinois Geospatial Data Clearinghouse

Published: December 2020. Updated as needed. Current as of the Publication Date. Centroid point locations for cities, towns, villages, unincorporated places, tribal communities, and selected neighborhoods in New York State. Places that cross county boundaries have only one point location and one county assigned. Only neighborhoods in the following cities are represented: Albany, Buffalo, New York City, Rochester, and Syracuse. Additional metadata, including field descriptions, can be found at the NYS GIS Clearinghouse: http://gis.ny.gov/gisdata/inventories/details.cfm?DSID=930. Centroid points for incorporated places and Indian Territories are mathematically derived based on GPO published 1:24,000-scale NYS Civil Boundaries data. Points for unincorporated places and neighborhoods are located based on NYS Department of Transportation 1:24,000-scale raster quadrangle maps and local input. This map service is available to the public. The State of New York, acting through the New York State Office of Information Technology Services, makes no representations or warranties, express or implied, with respect to the use of or reliance on the Data provided. The User accepts the Data provided “as is” with no guarantees that it is error free, complete, accurate, current or fit for any particular purpose and assumes all risks associated with its use. The State disclaims any responsibility or legal liability to Users for damages of any kind, relating to the providing of the Data or the use of it. Users should be aware that temporal changes may have occurred since this Data was created.

A web service of the Address Point file of buildings and properties in New York State. See metadata for additional information. Additional metadata, including field descriptions, can be found at the NYS GIS Clearinghouse: https://gis.ny.gov/gisdata/inventories/details.cfm?DSID=921.SAM Address Points Data Dictionary: https://gis.ny.gov/gisdata/supportfiles/Address-Points-Data-Dictionary.pdfIf the purpose of accessing the address points service is for geocoding, NYS ITS has a publicly available geocoding service which includes the address points along with other layers. For more information about the geocoding service, please visit: https://gis.ny.gov/gisdata/inventories/details.cfm?DSID=1278.For more information about the SAM Program, please visit:https://gis.ny.gov/streets.Publication Date: See Update FrequencyCurrent as of Date: 2 business days prior to Publication DateUpdate frequency: Second and forth Fridays of each monthThis map service is available to the public.The State of New York, acting through the New York State Office of Information Technology Services, makes no representations or warranties, express or implied, with respect to the use of or reliance on the Data provided. The User accepts the Data provided “as is” with no guarantees that it is error free, complete, accurate, current or fit for any particular purpose and assumes all risks associated with its use. The State disclaims any responsibility or legal liability to Users for damages of any kind, relating to the providing of the Data or the use of it. Users should be aware that temporal changes may have occurred since this Data was created.

DEC database record for individual cleanup site and documents when availableService layer is updated daily.For more information or to download layer see https://gis.ny.gov/gisdata/inventories/details.cfm?DSID=1097Download the metadata to learn more information about how the data was created and details about the attributes. Use the links within the metadata document to expand the sections of interest. http://gis.ny.gov/gisdata/metadata/nysdec.remedsite_borders_export.htmlThese are sites of environmental cleanup and safe brownfield redevelopment. DEC's remediation and enforcement programs ensure the timely and efficient cleanup and redevelopment of contaminated properties.

description: Geographic Place Names dataset current as of 2000. GNIP originally downloaded from the Georgia GIS Clearinghouse - areas have been updated as needed.; abstract: Geographic Place Names dataset current as of 2000. GNIP originally downloaded from the Georgia GIS Clearinghouse - areas have been updated as needed.

Publication Date: JAN 2018. Centroid point locations for cities, towns, villages, tribal communities, neighborhoods, and unincorporated places in New York State. Places that cross county boundaries have only one point location and one county assigned. Additional metadata, including field descriptions, can be found at the NYS GIS Clearinghouse: http://gis.ny.gov/gisdata/inventories/details.cfm?DSID=930.

© NYS Office of Information Technology Services GIS Program Office (GPO)

Virginia's Statewide GIS Clearinghouse hosted by the Virginia Geographic Information Network (VGIN) and the Virginia Information Technologies Agency (VITA). The GIS Clearinghouse is a repository of geospatial data produced and used by state agencies in Virginia, localities in Virginia, our Federal partners, non-profits, and colleges and universities in Virginia. Questions? email VBMP@VITA.VIRGINIA.GOV

A web service of the Address Point file of buildings and properties in New York State. Address points are scale triggered and will turn on at 1:50,000 and labels are scale triggered and will turn on at 1:3,000. See metadata for additional information. Additional metadata, including field descriptions, can be found at the NYS GIS Clearinghouse: http://gis.ny.gov/gisdata/inventories/details.cfm?DSID=921. SAM Address Points Data Dictionary: http://gis.ny.gov/gisdata/supportfiles/Address-Points-Data-Dictionary.pdfIf the purpose of accessing the address points service is for geocoding, NYS ITS has a publicly available geocoding service which includes the address points along with other layers. For more information about the geocoding service, please visit: http://gis.ny.gov/gisdata/inventories/details.cfm?DSID=1278.For more information about the SAM Program, please visit:http://gis.ny.gov/streets. Publication Date: See Update FrequencyCurrent as of Date: 2 business days prior to Publication DateUpdate frequency: Second and forth Fridays of each monthThis map service is available to the public. The State of New York, acting through the New York State Office of Information Technology Services, makes no representations or warranties, express or implied, with respect to the use of or reliance on the Data provided. The User accepts the Data provided “as is” with no guarantees that it is error free, complete, accurate, current or fit for any particular purpose and assumes all risks associated with its use. The State disclaims any responsibility or legal liability to Users for damages of any kind, relating to the providing of the Data or the use of it. Users should be aware that temporal changes may have occurred since this Data was created.

description: The polygons in this dataset represent boundaries of New York City business districts under The New York State Empire Zone (EZ) Program which offers a wide array of incentives including tax credits and utility discounts. This dataset originates from the NYS GIS clearinghouse and is processed for use within New York City. https://gis.ny.gov/gisdata/inventories/details.cfm?DSID=895; abstract: The polygons in this dataset represent boundaries of New York City business districts under The New York State Empire Zone (EZ) Program which offers a wide array of incentives including tax credits and utility discounts. This dataset originates from the NYS GIS clearinghouse and is processed for use within New York City. https://gis.ny.gov/gisdata/inventories/details.cfm?DSID=895

Publication Date: May 2025.