Census

The TIGER Page

U.S. Census Bureau Home Page

DEM (Digital Elevation Model)

1-Degree USGS Digital Elevation Models (A tutorial and data links)

California 7.5 Minute DEMs (Calif. State Northridge collection)

GTOPO30 Global 30 Arc Second Elevation Data Set

GTOPO30 FTP site

Earthquake

Harvard Seismology: Centroid-Moment Tensor Project

Southern California Current Earthquake Information

Geographic Names

PUBLIC NIMA GNPS QUERY FORM

USGS Mapping Information: Geographic Names Information System (GNIS)

Geology

U.S. Geological Survey

Western Mapping Center Main Page

USGS Central Region Digital Maps, Data, and Software

GSC Atlantic's Earth Science Site of the Week

Imagery

Refer also to the Remote Sensing Web Page

NIMA PUBLIC HOME PAGE

Street data

Geographic Data Technology, Inc.

Topography

GTOPO30 - Global Topographic Data

GTOPO30 Documentation

Others

Federal Geographic Data Committee

NGDC/WDC A for MGG - SOEST/NOAA High-resolution Shoreline Database

NSIDC Data Catalog: AARI 10-Day Arctic Ocean EASE-Grid Sea Ice Observations Extent (NSIDC-0050)

The Graphics File Format Page

USDOC/NOAA/NESDIS/National Geophysical Data Center

USGS Quad Conversions (map conversions)