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USGS Digital Line Graphs (DLGs)
Large-Scale (7.5-minute) DLGs correspond to the USGS 1:20,000, 1:24,000
and 1:25,000-scale topographic quadrangle maps.
Digital Line Graphs (DLGs) are digital vector representations of cartographic information
derived from USGS maps and related sources.
Only Selective coverage of the Large-Scale (7.5-minute) DLGs are available.
The following layers (or categories of feature type) may be available:
|
ID |
Layer |
Feature Type |
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BD |
Boundaries |
State, county, city, and other national and State lands such as forests and Parks |
|
HP |
Hypsography |
Contours and supplementary spot elevations |
|
HY |
Hydrography |
Flowing water, standing water, and wetlands |
|
MS |
Manmade features |
Cultural features, such as building, not collected in other data categories |
|
MT |
Misc Transportation |
Roads and trails, railroads, pipelines and transmission lines |
|
NV |
Non-vegetative features |
Glacial moraine, lava, sand, and gravel |
|
PL |
Public Land Survey System (PLSS) |
Township, range, and section lines |
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RD |
Roads |
Roads |
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RR |
Railroads |
Railroads |
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SC |
Vegetative surface cover |
Woods, scrub, orchards, and vineyards |
|
SM |
Survey control and markers |
Horizontal and vertical monuments (third order or better) |
Projection information is selected during Check Out
Select UTM, State Plane, Latitude / Longitude or
Web Mercator Projection
The projection information applies for complete order
If multiple projections are required please submit multiple orders
ESRI Shapefile output format.
ChartTiff DLGs are
Sold By Full Degree
ChartTiff DLGs are NOT available as a Free Download
See Samples
page to download sample DLGs
User requiring the more complete DLG sets may want to check-out our ChartTiff
ContoursPlus Quads
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