Geospatial Data - 35 of 35

Geospatial Data FAQs - 35 Found

Load first FAQ in this category.

PREV

NEXT

Load last FAQ in this category.
Why don't USGS 7.5 minute topographic maps show the UTM grid?

Through time, policies have changed regarding whether or not a full UTM grid would appear on the 7.5-minute map series. Beginning in the mid 1950's, the grid was indicated by blue ticks around the map at 1000 meter spacing. In 1979, the ticks were replaced with a full-line black UTM grid. Because so many complaints were received through a 1991 user survey, the full grid was removed in early 1992 and blue ticks returned to the maps. In 1994, another survey indicated that either a complete grid or internal 1000 meter ticks were the preferred treatment as opposed to the perimeter ticks alone. A full grid appears on the most recently printed 7.5-minute maps with the exception of single edition quadrangles published cooperatively with the U. S. Forest Service.

 

Tags: Map Coordinate Systems, Maps, Universal Transverse Mercator (UTM)