USGS quads layer

The USGS quads layer shows the 1:24,000-scale U.S. Geological Survey quadrangle boundaries.

Quads of Arizona Quads in the area of Galveston, TX

Details

Name

The name of the quadrangle

Code

The naming code used by USGS to identify individual 24K quadrangles.

Located in 100K

Name of the 100K scale quadrangle in which the 24K quadrangle is located.

Located in 100K code

The 3-digit code used to identify 100K quadrangles.

Located in 250K

Name of the 250K scale quadrangle in which the 24K quadrangle is located.

Located in 250K code

The 2-digit code used to identify 250K quadrangles.

UTM zone

The Universal Transverse Mercator (UTM) projection zone in which each quadrangle is located.

Options

This layer has no options.

Origin

This data layer can be obtained from the U.S. Geological Survey.
Abstract
The 1:24,000-scale (24K) U.S. Geological Survey (USGS) quadrangle boundary data set contains the following information.
  1. The approximate boundaries of the various 24K USGS quadrangles.
  2. The names and indexing codes associated with each 24K quadrangle
  3. information on which 1:100,000- (100K) and 1:250,000-scale (250K) quadrangle each 24K is associated with
Purpose
The data set was created to assist UMESC employees with locating the names and indexing information associated with each 24K quadrangle, and their approximate boundaries.
Additional information
The quadrangle boundaries are approximate. Quadrangles associated with the outer U.S. boundaries (e.g., those along the shores of the Great Lakes, oceanic coasts, or the borders with Canada and Mexico), may have been extended to include areas that were considered too small to create individual quadrangles for. No attempt was made to locate each of these odd sized quadrangles and accurately represent their boundaries in this data set. Furthermore, considering the size of the database, no attempt was made to densify (add locational detail) to the lines that define the boundaries of the quadrangles.