Legend (DW_Map_Dynamic/EN_Map_Indexes_WTM_Ext)

250K USGS Quad Index - Level 0 - 3 (2) 250K USGS Quad Index - Level 4 - 16 (3) 100K USGS Quad Index - Level 1 - 2 (5) 100K USGS Quad Index - Level 3 (6) 100K USGS Quad Index - Level 4 - 16 (7) 24K USGS Quad Index - Level 3 - 4 (9) 24K USGS Quad Index - Level 5 - 6 (10) 24K USGS Quad Index - Level 7 - 16 (11) 12K USGS Quad Index - Level 4 - 5 (13) 12K USGS Quad Index - Level 7 - 16 (14)