USGS EROS Archive - Digital Line Graphs (DLGs) - Large Scale
Digital Line Graphs (DLGs) are digital vector representations of cartographic information derived from USGS maps and related sources.
Large-Scale (7.5-minute) DLGs correspond to the USGS 1:20,000-, 1:24,000-, and 1:25,000-scale topographic quadrangle maps. They are primarily cast to the Universal Transverse Mercator (UTM) projection system, but some are cast to the State Plane coordinate system. They are referenced to either the North American Datum (NAD) of 1927 (NAD27) or the NAD of 1983 (NAD83).
Depending on scale, the following layers (or categories of feature type) are available:
| Layer | Feature Type |
|---|---|
| Public Land Survey System (PLSS) | Township, range, and section lines |
| Boundaries (BD) | State, county, city, and other national and State lands such as forests and parks |
| Transportation (TR) | Roads and trails, railroads, pipelines, and transmission lines |
| Hydrography (HY) | Flowing water, standing water, and wetlands |
| Hypsography (HP) | Contours and supplementary spot elevations |
| Non-vegetative features (NV) | Glacial moraine, lava, sand, and gravel |
| Survey control and markers (SM) | Horizontal and vertical monuments (third order or better) |
| Man-made features (MS) | Cultural features, such as buildings, not collected in other data categories |
| Vegetative surface cover (SC) | Woods, scrub, orchards, and vineyards |
Coverage Maps
Additional Information
Access Data
EarthExplorer can be used to search, preview, and, download Digital Line Graph (DLG) data. The collection is located under the Digital Line Graphs category.
Digital Object Identifier (DOI)
Digital Line Graphs (DLGs) - Large Scale Digital Object Identifier (DOI) number: /10.5066/P9LVXWFR
Below are other science projects associated with this project.
USGS EROS Archive - Digital Line Graphs (DLGs) - Intermediate Scale
Digital Line Graphs (DLGs) are digital vector representations of cartographic information derived from USGS maps and related sources.
Large-Scale (7.5-minute) DLGs correspond to the USGS 1:20,000-, 1:24,000-, and 1:25,000-scale topographic quadrangle maps. They are primarily cast to the Universal Transverse Mercator (UTM) projection system, but some are cast to the State Plane coordinate system. They are referenced to either the North American Datum (NAD) of 1927 (NAD27) or the NAD of 1983 (NAD83).
Depending on scale, the following layers (or categories of feature type) are available:
| Layer | Feature Type |
|---|---|
| Public Land Survey System (PLSS) | Township, range, and section lines |
| Boundaries (BD) | State, county, city, and other national and State lands such as forests and parks |
| Transportation (TR) | Roads and trails, railroads, pipelines, and transmission lines |
| Hydrography (HY) | Flowing water, standing water, and wetlands |
| Hypsography (HP) | Contours and supplementary spot elevations |
| Non-vegetative features (NV) | Glacial moraine, lava, sand, and gravel |
| Survey control and markers (SM) | Horizontal and vertical monuments (third order or better) |
| Man-made features (MS) | Cultural features, such as buildings, not collected in other data categories |
| Vegetative surface cover (SC) | Woods, scrub, orchards, and vineyards |
Coverage Maps
Additional Information
Access Data
EarthExplorer can be used to search, preview, and, download Digital Line Graph (DLG) data. The collection is located under the Digital Line Graphs category.
Digital Object Identifier (DOI)
Digital Line Graphs (DLGs) - Large Scale Digital Object Identifier (DOI) number: /10.5066/P9LVXWFR
Below are other science projects associated with this project.