The mission of the U.S. Geological Survey (USGS) is to provide geologic, topographic, and hydrologic information that contributes to the wise management of the Nation's natural resources and that promotes the health, safety, and well-being of the people. This information consists of maps, databases, descriptions and analyses of the water, energy, and mineral resources, land surface, underlying geologic structures, and the dynamic processes of the Earth.

The Central Region headquarters for the U.S. Geological Survey is located at the Denver Federal Center in Lakewood, Colorado. Click here for a location map (PDF).

Shown below are sources of information and points of contact within the U.S. Geological Survey. Additional phone numbers

USGS, Office of the Director, Central Region Regional Director: 303-236-5900

Ask-A-Geologist General questions on earth sciences sent to the geologist of the day at the following e-mail (Internet) address will be answered within a day or two: ask-a-geologist@octopus.wr.usgs.gov

Astrogeology General planetary information: U.S. Geological Survey Regional Planetary Image Facility (RPIF) 2255 North Gemini Dr. Flagstaff, AZ 86001 520-556-7264

Core Research Center A unique collection of rock core, cuttings, and thin-sections that is available to users worldwide. Denver Federal Center Bldg. 810, Entrance S31 MS-975 Denver, CO 80225 303-202-4851 Hours: M-F, 8:30-4:30

Earthquakes National Earthquake Information Center Golden, CO Denver Federal Center P.O. Box 25046 MS-967 Denver, CO 80225 Tours: 303-273-8500 Fax: 303-273-8450 E-mail: Internet: sedas@gldfs.cr.usgs.gov Prerecorded information on earthquakes recorded during previous 24 hrs: Earthquake Information Line: 303-273-8516 Seismicity Maps: 303-273-8477 CD-ROM Products: 303-273-8418 National Earthquake Information Center Menlo Park, CA

Education GeoCenter, earth-science education information, resources, and teaching materials. For teachers only. By appointment. Susann Powers Denver Federal Center Bldg 20 P.O. Box 25046, MS-914 Denver, CO 80225 303-236-1015 Fossil and Mineral Loaner Sets for Teachers Tom Michalski Denver Federal Center Bldg 810 P.O. Box 25046, MS-975 Denver, CO 80225 303-202-4852 Learning Web (Internet) www.usgs.gov/education/index.html

GEOMAG GEOMAG is a user-friendly program that provides estimates of the geomagnetic field elements, including declination and total field intensity, based upon Magnetic Models. The program is accessible by modem or through the Internet.

Landslides USGS National Landslide Information Center, Golden Lynn Highland P.O. Box 25046, MS-966 Denver Federal Center Denver, CO 80225 1-800-654-4966

Library Bldg 20, 2nd Floor P.O. Box 25046, MS-914 Denver Federal Center Denver, CO 80225 Hours: M-F, 9:30-4:00 Librarian 303-236-1004 Circulation 303-236-1015 Field Records 303-236-1005 Interlibrary loan 303-236-1015 Reference 303-236-1000 Photolibrary 303-236-1010 Fax 303-236-0015

Maps and publications Maps, books, teacher packets, general interest publications U.S. Geological Survey Rocky Mountain Mappping Denver Denver Federal Center Bldg 810 P.O. Box 25286, MS 306 Denver, CO 80225 Hours: M-F, 8:00-4:00 303-202-4700 Computerized Maps and Data, Aerial Photography, Satellite Imagery, Computer Programs: U.S. Geological Survey Earth Science Information Center (ESIC) Denver Federal Center Bldg 810 P.O. Box 25046, MS-504 Denver, CO 80225 Hours: M-F, 8:00-4:00 303-202-4200

National Ice Core Laboratory Denver Federal Center Bldg 810, Entrance S31 P.O. Box 25046, MS-975 Denver, CO 80225 303-202-4843 Hours: M-F, 8:00-5:00; tours by appointment

Office of the Regional Geologist Denver Federal Center Bldg 20 P.O. Box 25046, MS-911 Denver, CO 80225 303-236-5438

Personnel Office Denver Federal Center Bldg 25, Rm 2412 P.O. Box 25046, MS-203 Denver, CO 80225 Hours: M-F, 8:00-4:30 303-236-5900

Volcanoes USGS Cascades Volcano Observatory David A. Johnston 5400 MacArthur Boulevard Vancouver, WA 98661 USGS Hawaiian Volcano Observatory Hawaii National Park, Hawaii 96718 Alaska Volcano Observatory

Volunteer Program Elly Brouwers Denver Federal Center P.O. Box 25046, MS-911 Denver, CO 80225 303-236-5440 brouwers@usgs.gov

Water Colorado District Office A series of colorful water resource educational posters is available for students in grades K-8. Poster topics include water use, water quality, wastewater treatment, wetlands, groundwater, and navigation. Write to: Water Resource Education Steve Vandas Denver Federal Center P.O. Box 25046, MS-406 Denver, CO 80225 The Clearinghouse provides water resources information from all the states in the USA: National Water Information Clearinghouse U.S. Geological Survey, MS-423 12201 Sunrise Valley Drive Reston, VA 22092 1-800-426-9000

URL http://geology.cr.usgs.gov/crg/infosrc.htm