Information

Source

Obtainable

Comments

Geographic

Land use maps, land cover

These maps have been digitized, edited and

Information

maps, and associated

incorporated into a digital data base.

The

Retrieval and

overlays for the United

data is available to the public in both

Analysis System

States.

graphic and digital form.

Statistics

(GIRAS)

derived from the data are available also.

USGS

Users are able to search for either

Earth Science

locations or attributes.

To obtain

Information Center

information from this data base, contact

(ESIC)

ESIC.

507 National Center

Reston, VA 22092

(800) USA Maps

(703) 648 6045

Topographic Maps

Organized and summarized

GNIS provides a rapid means of organizing

Users Service

information about cultural

and summarizing current information about

Geographic Names

or physical geographic

cultural or physical geographic name

Information System

entities.

entities.

The data base contains a separate

(GNIS)

file for each state, the District of

Reston, VA 22092

Columbia, and territories containing all

(703) 648 7112

7.5 min. maps published or planned.

Topography Data

This system contains a

The data were obtained from U.S. Government

National Geophysical

variety of topography and

agencies, academic institutions, and private

Data Center

terrain data sets

industries.

Data coverage is regional to

NOAA, Code E/GCI

available for use in

worldwide; data collection methods encompass

325 Broadway

geoscience applications.

map digitization to satellite remote

Boulder, CO 80303

sensing.

(303) 497 6764

A4 6

November 1992