Publisher: National Geospatial-Intelligence Agency (NGA)

Topographic Line Map 1:100,000 / NGA (formerly NIMA). It's a base topographic products used by the US military and other nations. Feature portrayal includes relief, drainage, vegetation, populated places, cultural features, roads and railroads. The map is a true representation of terrain detail. TLMs are primarily used by land and air forces in support of ground operations for planning, tactical operations, terrain study, and target.