The USGS 7.5' quadrangle grid for Maryland.

This data set contains boundaries for USGS 1:250,000 quadrangle maps in a vector digital format.

Data available online through the Arkansas Spatial Data Infrastructure (http://gis.arkansas.gov). Quarter Quadrangles of Arkansas

This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. The USGS 7.5' quadrangle grid for Maryland. Feature Service Layer Link: http://geodata.md.gov/imap/rest/services/Location/MD_USGSTopoGrids/FeatureServer/0 ADDITIONAL LICENSE TERMS: The Spatial Data and the information therein (collectively "the Data") is provided "as is" without warranty of any kind either expressed implied or statutory. The user assumes the entire risk as to quality and performance of the Data. No guarantee of accuracy is granted nor is any responsibility for reliance thereon assumed. In no event shall the State of Maryland be liable for direct indirect incidental consequential or special damages of any kind. The State of Maryland does not accept liability for any damages or misrepresentation caused by inaccuracies in the Data or as a result to changes to the Data nor is there responsibility assumed to maintain the Data in any manner or form. The Data can be freely distributed as long as the metadata entry is not modified or deleted. Any data derived from the Data must acknowledge the State of Maryland in the metadata.

This is a polygon feature data layer of United States National Grid (1000m * 1000m polygons ) for Arizona (UTM Zone 12)

This is a polygon feature data layer of United States National Grid (1000m * 1000m polygons ) for Western Arizona (UTM Zone 11)

Reference quads for emergency response reconnaissance developed for use by the US Environmental Protection Agency. Grid cells are based on densification of the USGS Quarterquad (1:12,000 scale or 12K) grids for the continental United States, Alaska, Hawaii and Puerto Rico and are roughly equivalent to 1:6000 scale (6K) quadrangles approximately 2 miles long on each side. Note: This data set is available as a national-scale file (>80MB) and as individual regional subsets. Each regional extract includes a 20 mile buffer of tiles around each EPA Region. The URLs for each are as follows: Entire Country: https://edg.epa.gov/data/Public/OLEM/OLEM-OEM/6kquads_epa.zip, Regional subsets: https://edg.epa.gov/data/Public/OLEM/OLEM-OEM/6kquadr[enter region number].zip (e.g., R6 subset URL https://edg.epa.gov/data/Public/OLEM/OLEM-OEM/6kquadr6.zip)

Reference quads for emergency response reconnaissance developed for use by the US Environmental Protection Agency. Grid cells are based on densification of the USGS Quarterquad (1:12,000 scale or 12K) grids for the continental United States, Alaska, Hawaii and Puerto Rico and are roughly equivalent to 1:6000 scale (6K) quadrangles approximately 2 miles long on each side. Note: This file is a regional subset that has been extracted from a national file 6K quad file. Each regional extract includes a 20 mile buffer of tiles around each EPA Region. To access the national layer (size is greater than 80MB), go to https://edg.epa.gov/data/Public/OLEM/OLEM-OEM/6kquads_epa.zip.