This is a MD iMAP hosted service layer. Find more information at http://imap.maryland.gov. This layer is the MGRS 1000m grid that covers Zone 18S which covers part of Maryland.The U.S. National Grid provides a standardized grid reference system that is seamless across jurisdictional boundaries and allows for pinpointing exact locations. Since USNG is standardized - it can be understood and used as a common geographic framework for response. Zone 18S covers part of Maryland. The vertical UTM boundaries are horizontal latitude band boundaries form (generally) 6 X 8 Grid Zones. Hence - the first three letters of the MGRS value - e.g. '18S' - are referred to as the Grid Zone Designator (GZD). The fourth and fifth characters are a pair of letters identifying one of the 100000-meter grid squares within the grid zone (or UPS area). The "S" in this instance is not to be confused with UTM Zone 18S for UTM in the Southern Hemisphere. There are no classification restrictions on this information. This information was created by the National Geospatial-Intelligence Agency (NGA) Coordinate Systems Analysis Team (SNAC). Last Updated: 01/2016 Feature Service Layer Link: http://geodata.md.gov/imap/rest/services/Location/MD_USNGZone18S/FeatureServer/3 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.