Maps & Other Cartographic Information: Find Printed Maps

This guide will help you find maps and other geographic materials at the library

Maps Collection - Library Basement - Index

P S U Library Map Room                                                                                                                Location: The Map Collection is located in the basement of the PSU Library

Photo: Library moving, map room, 2/2/68

 University Archives Digital Gallery, Portland State University Library

Find the following in the Map Collection:

  • Aeronautical Charts
  • Bureau of Land Management (B.L.M.) Maps
  • Census Maps
  • Central Intelligence Agency Maps
  • Defense Mapping(DMA) Maps
  • Forest Service
  • Nautical Charts
  • Thematic Maps
  • U.S.G.S. Geologic Maps
  • U.S.G.S. Topographic Maps
  • Oregon Flood Insurance
  • Portland and Metro Maps
  • Travel Maps

Maps Collection - Library Basement

U.S.G.S. Topographic Maps / Basement/Located in Map Cases 1-6

Topographic maps show the shape and elevation of the terrain. Most of the topographic maps in the Map Collection are 7.5 minute, 1:24,000 scale. These maps are produced by the U.S. Geological Survey (USGS) The Library also has a collection of 15-minute maps (1:62,500).  This series was abandoned effective 1 June 1996; the USGS 7.5-minute (1:24,000) series is the official replacement for the 15-minute series, except for Alaska which is not yet mapped to 1:24,000. Fifteen-minute quadrangles, along with historic editions of all maps, are kept only for the states of Oregon, Washington, Idaho and Nevada.

Topographic maps are identified by state and then by the quadrangle name. The index maps for each state are located in the first drawer of maps for each respective state. The Library also keeps index maps for the topographic series at Ready Reference (2nd floor). After a quadrangle has been located on the index map, the quadrangle can then be located in the appropriate drawer. The quadrangle maps are arranged in alphabetical order in the drawers. Topographic maps also can be viewed and downloaded for free from the USGS Store.

Bureau of Land Management (B.L.M.) Maps / Basement/Rm.30 Located in Map Cases 7-8, Available upon request

B.L.M. maps are topographic maps used primarily as cadastral maps (or maps that show land property-ownership lines). These maps show some surface features, but are used primarily to identify land ownership boundaries and property descriptions. These maps are also identified or referred to as surface management status maps.

The B.L.M. also produces mineral management status maps. Mineral management status maps identify the federal agency that owns the minerals in a given quadrangle. Sometimes the surface management status data and the mineral management status data are included on the same map.

The B.L.M. maps are arranged by state and alphabetical quadrangle name. BLM maps for Oregon are filed in Map Case 9, drawers 10-11.

Defense Mapping Agency (DMA) Maps /Basement/ Located in Map Cases 10

The 1:50,000 series of domestic topographic maps is prepared and distributed for the DMA by the USGS. They are filed alphabetically by state and then map name in Map Case 13, drawer 3. The library also has a set of World/Regional maps that consists of hundreds of maps of various kinds (e.g. general, planimetric, topographic, road maps) at various scales. Although essentially inactive (dating back to the time of the Army Map Service) this set often contains the only maps in the collection covering certain areas of the world.                

DMA maps are arranged in lettered and numbered series in Map Cases 10 and 11. Individual sheets are filed alphabetically within each series. Indexes to this collection include the DMA Map Depository Catalog located in the map room and the Defense Mapping Agency: Public Sale Topographic Maps and Publications located in Ready Reference on the second floor.

Forest Service Maps / Basement : Located in Map Cases 15; Oregon State Forestry Dept. Maps and Oregon Wetland Inventory in Map Case 12

USGS topographic quadrangles [Forest lands] (scale 1:24,000) in Map case 15, drawers 6-10; Oregon quadrangles in drawer 8.

US Forest Service maps (various scales) in Map case 15, drawers 6 10- These are maps of national forests and wilderness areas in the states of Montana, Wyoming, Idaho, Washington, northern California, and the Tongass National Forest of southeastern Alaska. Also includes Forest Visitor and Travel maps.

Oregon State Forestry Dept. maps (scale 1:100.000) in Map case 12, drawers 17-18)

Oregon wetland maps are produced as part of the National Wetland Inventory (NWI) of the U.S. Fish and Wildlife Service. Wetlands are identified from aerial photographs, based on vegetation, visible hydrology and geography in accordance with the Classification of Wetlands and Deep Water Habitats of the United States (FWS/OBI-74/31 Dec. 1979). This information is superimposed on USGS topographic quadrangles, of which there are about 1,884 for the state of Oregon.

Holdings in our collection are indicated on the Oregon Wetland Inventory [Index to 7.5 min. maps] in Map Case 18, drawer 4. In general, our holdings consist of wetland maps for the Metro area (Multnomah, Washington, Clackamas counties) and the Columbia river from Astoria to the Dalles.

Forest maps for states other than those listed above and miscellaneous fold out maps, atlases, and brochures are in the Government Documents area under the call number A 13.28:.

Nautical Charts / Basement/Rm. 30 Located in Map Cases 11-12/Available upon request

Nautical charts are special maps used for navigation at sea. These charts are produced by the U.S. National Ocean Service, a component of NOAA. The charts are un-cataloged and are arranged by stock number. The National Imagery and Mapping Agency (NIMA) Nautical Charts are catalogs that indicate which region is attached to which stock number.

The NIMA catalogs are on the Index Table adjacent to the Nautical Maps & Charts. Additionally, the map drawers in Map Cases 15-16 are labeled by region.

U.S.G.S. Geologic Maps / Storage/ Available request

Geologic maps provide information on the structure of the Earth, such as types of rocks exposed on the Earth's surface and types of bedrock that underlie the surface materials.

Several different geologic map series are produced by the USGS. Examples include: Coal Investigations (C), Circum-Pacific (CP), Geological Quadrangle Map Series (GQ), Geophysical Investigations (GP), Hydrologic Investigations Atlases (HA), Land Use and Land Cover Maps (L), Mineral Investigations Resources (MR), Miscellaneous Field Studies (MF), Geologic Investigations (I), and Oil and Gas Investig. Charts & Maps (OC / OM). These maps are identified by a series name such as GQ or GP, and then a number.

The Guide to USGS Publications (Andriot, 1997, & located on the top of map cases F1-F9 in the Map Collection) and the Guide to USGS Publications (Andriot, 1998, & located in Ready Reference on the 2nd floor) are particularly useful for identifying geologic maps by area or subject. Additionally, it's possible to search for recent geologic maps and publications via the USGS Library at or the library's online catalog.

Thematic Maps / Storage/Available Upon request

Thematic maps provide information on special topics or themes. Examples of topics or themes covered are politics, economics, hydrology, population statistics and demographics. Thematic maps are often statistical in nature. These maps have call numbers and are in the Library's catalog (Vikat).

Central Intelligence Agency Maps / Located in the Map Collection (Basement, Rm. 30) Case 19) Available upon request

CIA maps are primarily political maps produced by the CIA. These maps occasionally include thematic insets providing information on economic and social topics as well as features of the physical environment. CIA maps are located in 4 binders in Ready Reference on the 2nd floor and in a drawer in the Map Collection in the basement labeled SUDOCS PREX CIA (Case 19).

Aeronautical Maps / Storage, Available upon request

Aeronautical maps are produced and distributed by the Aeronautical Charts Service of the Department of Transportation and are received in the Library on a regular basis via the depository program. These maps serve the needs of aircraft at low and intermediate altitudes. Maps in this series include the Sectional Aeronautical charts and the VFR Terminal area charts (these maps provide greater detail for several terminal areas). These are cataloged and searchable in Vikat. Aeronautical maps are located in the blue plastic boxes on shelves next to the Map Collection.

Oregon Flood Insurance Maps / Being Moved/In transit

Flood Insurance Rate Maps are published by the Federal Emergency Management Agency, under its National Flood Insurance Program. These black and white folded maps show flood plain boundaries, flood zones (defined by 100-year and 500-year flood boundaries), base flood elevations, special flood hazard areas, corporate limits, cultural features, and more. Each incorporated area (e.g. Portland, Beaverton) within a county has its own index map, and there is a separate index for the unincorporated areas of each county. Portland State's collection includes maps for all Oregon counties.

City of Portland and METRO maps and aerial photographs / Basement/Located in the Map Case 7

METRO is the directly-elected regional government serving Clackamas, Multnomah and Washington counties and the 24 cities that make up the Portland metropolitan area. Portland State owns several products of its Data Resource Center including various thematic maps in drawer 2 and aerial photographs in drawers 3-11. Each photomap covers four sections from the township/range section grid. There is an Index to Aerial Photographs on top of the cabinet. Portland State owns sets produced in 1990 and 1997, the latter of which is in color. Thematic maps of the City of Portland are found in the first and last drawers.

Looking for Maps? Ask Us!

If you need assistance locating or using the maps and atlases in the Map Collection, please contact:

  • The Reference Desk, located on the second floor. Phone number: (503) 725-2399 and Email
  • Richard Mikulski, Government Documents & Social Science Librarian (

For more information, try the Geology and Geography guides: 

Map Indexes

Aeronautical Charts and Related Products (located in the Storage - C 55.418/2:) provides access to the charts  located in map cases 9-11. The Aeronautical Chart User's Guide (Ready Reference - C 55.408:AE 8) provides an explanation of terms and symbols used on the various charts.

Defense Mapping Agency (DMA) Map Depository Catalog  is the most complete record of holdings for the DMA map collection. Of particular interest is series 1301, a large collection of maps covering most areas of the world.

Defense Mapping Agency: Public Sale Topographic Maps and Publications (located in Ready Reference) applies only to DMA maps currently available, a very small portion of the total DMA collection.

Guide to USGS Publications (Andriot, 1997)is particularly useful for identifying geologic maps by area or subject.

Index to Intermediate-Scale Mapping for BLM Surface management status and Surface/minerals managment status maps

Index to Published Geologic Mapping in Oregon, 1898-1979 / complied by C. A. Schumacher, 1981. (QE155 .A365)

Index to Geologic Maps of Oregon, by USGS Topographic Quadrangle Name / compiled by Peter L. Stark. (QE155 .A365 no. O-95-4, 2nd floor reference)

Publications of the Oregon Dept. of Geology and Mineral Industries. (Z6034.U5 O8425, 2nd floor reference)

Monthly Catalog of U.S. Government Publications (print copy located in Reference - Z1223 .A18, ONLINE FROM 1994-PRESENT) to find maps issued to depository libraries from the Government Printing Office including those from BLM, Census, CIA, etc.

National Imagery and Mapping Agency Nautical Charts and Publications: Public Sale  is a multivolume catalog lists charts numerically and geographically (pp. 36-37)

National Imagery and Mapping Agency Catalog of Maps, Charts, and Related Products, pt.2 vol. 1 (provides information similar to the NIMA Nautical Charts and Publications: Public Sale catalog.

Catalog of [Nautical] Charts and Publications - C 55.418: and in ready reference) is a series of fold out index maps issued in five parts.

Nautical Chart Symbols, Abbreviations, and Terms. Chart No. 1 United States of America contains descriptions of current preferred U.S. symbols shown on NIMA charts.