national aerial resources :: maps & other goodies

nar is a USGS business partner

nar is an Authorized USGS Business Partner

What USGS map products does nar provide?

nar can provide any maps or other published products, digital satellite photography and cartographic data, as well as the usual USGS aerial photography. Click on any appropriate link to ask us to get you the USGS map of your choice!

USGS Topographic Maps > USGS Maps: 1:24,000 or 1:24K

The nar price for this series of maps is $12.95 for the first map, $8.95 for each additional plus $5.00 for shipping and handling.
The best known USGS maps are those of the 7.5-minute, 1:24,000-scale quadrangle series. A scale of 1:25,000 is used for maps based on metric units (1 centimeter = 0.25 kilometer). The area portrayed on each sheet ranges from 64 square miles at a latitude of 30 degrees north to 49 square miles at a latitude of 49 degrees north.

A scale of 1:24,000 allows considerable detail to be shown in the quadrangle areas. It takes about 57,000 maps to cover the conterminous 48 States, Hawaii, and territories. All of these maps are now for sale to the public. (For Alaska, 7.5-minute maps at 1:24,000 and 1:25,000 scale are available for areas around Anchorage, Fairbanks, and Prudhoe Bay.)

The sheet size is about 22 x 27 inches north of latitude 31 degrees and 23 x 27 inches south of that latitude.

For Puerto Rico, the scale of 1:20,000 (1 centimeter = 0.2 kilometer) was adopted in the 1950's because it was a metric scale and the island had used metric measurements previously. The island was originally mapped at 1:30,000 scale, but this was changed to 1:20,000 to provide greater detail. The sheet size is about 29 x 32 1/2 inches. The U.S. Virgin Islands of St Croix, St. John, and St. Thomas have been mapped at a scale of 1:24,000; central Pacific islands at scales ranging from 1:10,000 to 1:50,000.

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USGS Topographic Maps > USGS Maps: 1:50,000 or 1:50K

Maps at 1:50,000 scale correspond closely in content to the 1:24,000-scale quadrangle maps. County maps and some National Park maps are included in this category.

A county map may consist of one or more sheets, depending on the size of the county. About 20 percent of the Nation's counties are covered, 10 percent at 1:50,000 and 10 percent at 1:100,00-scale.

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USGS Topographic Maps > USGS Maps: 1:62,500 or 1:62K

This subcategory includes all topographic maps for the United States of America with scale 1:62,500.

Commonly called the 15-minute map series these items have been discontinued with the exception of approximately 80 which cover special areas of interest.

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USGS Topographic Maps > USGS Alaska Maps 1:63,360 or 1:63K

The standard map series covering Alaska is the 15-minute, 1:63,360-scale (1 inch = 1 mile) quadrangle series, usually having dimensions of 15 minutes in latitude and from 20 to 36 minutes of longitude. The area portrayed on each sheet ranges from 207 to 280 square miles, depending on the latitude.

The features shown on 15-minute maps are generally the same as those shown on 7.5-minute maps, except that some may be generalized or omitted because of the smaller scale and consequent space restrictions. The sheet size is about 18 x 22 inches north of latitude 62 degrees and 17 x 27 inches south of that latitude.

About 97 percent of the 2,920 sheets covering Alaska at this scale are completed; the remaining 3 percent to be done are in the Aleutian Islands and the Bering Sea islands west of the mainland.

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USGS Topographic Maps > USGS Maps: 1:100,000 or 1:100K

Virtually all of the conterminous United States and Hawaii are covered by 30- x 60-minute quadrangle maps at a scale of 1:100,000. Most of these maps are derived from 1:24,000-scale maps, but they show distances and contour intervals in meters. Contours are at intervals of 5, 10, 20, or 50 meters, depending on terrain relief.

Some 1:100,000-scale quadrangle maps are published in planimetric editions, without contours, Bureau of Land Management editions showing Surface Management Status and Surface Minerals Management Status are also available, primarily in the western States.

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USGS Topographic Maps > USGS Maps: 1:250,000 or 1:250K

Maps in the 1:250,000-scale series are available for the entireUnited States. They were originated by the U.S. Army Map Service during the 1950's, but are now maintained by the USGS.

This series serves as base maps for aeronautical charts and geologic maps, for geographic reference, and in planning regional land use, transportation, and utility systems. Elevation data, derived from the contours on these maps, are available from any ESIC.

Conterminous United States: Quadrangles are 1 degree of latitude by 2 degrees of longitude. Along the coasts dimensions are modified to fit some maps. The series consists of 489 sheets. Ground area shown varies with latitude, from 8,218 square miles at 30 degrees north to 6,222 square miles at 49 degrees north. Sheet size is about 32 x 22 inches. About 8 percent of these sheets have been replaced by folded metric maps, about 36 x 22 inches in size.

Hawaii: Quadrangles are 1 degree of latitude and from 1 degree 30 minutes to 1 degree 35 minutes of longitude. Ground area mapped is from 6,645 to 6,990 square miles. Sheet size is about 29 x 22 inches.

Alaska reconnaissance series: This 153-sheet series covers the mainland and adjacent islands. It is being superseded by the Alaska 1:250,000-scale series. Quadrangles are 1 degree of latitude and from 2 to 3 degrees of longitude. Ground area mapped is from 5,105 to 6,030 square miles for 1- x 2-degree quadrangles and from 4,580 to 7,310 square miles for 1- x 3-degree quadrangles. Sheet size is about 32 x 22 inches.

Alaska 1:250,000-scale series: Quadrangles, ground areas, and sheet size match those in the reconnaissance series, but the source data are more accurate. Hypsographic (terrain relief) information is more generalized than on larger scale maps. Because the contour intervalis 50, 100, 200, or 500 feet, many small relief features are not shown on this series.

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USGS Topographic Maps > USGS Maps: 1:500,000 or 1:500K

The state maps in this series are usually published in three separate editions: (1) base map, (2) highway and contour map (topographic edition), and (3) shaded-relief map. Most are at a scale of 1:500,000, but a few have been released at 1:1,000,000 or other scales.

The features shown are limited to areas within the State. No areas of adjoining States are shown except shorelines in coastal States and major streams and other water areas that form State boundaries.

Most maps in the state map series show one State per sheet, but some show more than one State --New Hampshire and Vermont; Connecticut, Massachusetts, and Rhode Island; Delaware and Maryland. (There is also a separate sheet for Connecticut at 1:125,000 scale.)

Four States have more than one 1:500,000-scale sheet: California(2), (2),Michigan (2), Montana (2), and Texas (4).

Two maps of the State of Alaska show Alaska National Interest Lands: shaded relief at 1:5,000,000 and planimetric at 1:2,500,000. Alaska State maps are available at scales of 1:1,584,000, 1:2,500,000, 1:5,000,000, and 1:12,000,000. Alaska is the only State for which there is no 1:500,000-scale map.

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