20231212
13340500
1.0
TRUE
The USGS Map Indices service from The National Map (TNM) consists of 1x1 Degree, 30x60 Minute (100K), 15 Minute (63K), 7.5 Minute (24K), and 3.75 Minute grid polygons used in The National Map viewer for reference and to download data. At 1:24,000-scale (24K), the standard map size is 7.5 minutes of latitude by 7.5 minutes of longitude. At 1:100,000-scale (100K), the standard map size is 30 minutes of latitude by 60 minutes of longitude. The National Map viewer allows free download of public domain USGS map indices data in Esri File Geodatabase format. See https://apps.nationalmap.gov/help/ for assistance with The National Map viewer, download client, services, or metadata.
map
indices
index
reference
grid
1x1 degree
30x60 minute
100K
1:100
000
15 minute
63K
1:62
500
7.5 minute
24K
1:24
000
3.75 minute
United States
US
NGP-TNM
REST
WMS
USGS TNM Map Indices
U. S. Geological Survey - National Geospatial Program. Data Refreshed January, 2024.
Map Indices
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