Upper Midwest Environmental Sciences Center

Home About Director's Overview History of Center Employee Directory Map to Center Partners State Field Stations Lake City, Minnesota La Crosse, Wisconsin Bellevue, Iowa Great Rivers, Illinois Open River, Missouri Havana, Illinois Field Station Directory Science Programs Aquatic Ecosystem Health River Ecology Long Term Resource Monitoring Wildlife Ecology Geospatial Sciences and Technology Science Initiatives Science Topics Data and Tools Publications Software Multimedia News

Maps, Quadrangles, and Figures
Digital Orthophoto Quadrangles (DOQ)

Quadrangle Indexes Names and codes associated with USGS quadrangles

Data transfer and file format information.

---

These data sets were created to provide users with (1) the approximate boundaries of USGS quadrangles and (2) the names and indexing codes associated with each quadrangle.

---

Quadrangle Indexes

Note: Quadrangle boundaries are approximate. All files are stored in decimal degree coordinates, North American Datum 1927 (NAD27).

- 1:250,000-scale Quadrangles (4.1 mbyte Shape)
- 1:100,000-scale Quadrangles (8.0 mbyte Shape)
- 1:24,000-scale Quadrangles (2.1 mbyte Shape)

Page Last Modified: April 17, 2018