Check out the data sources in the GIS source pages as well.
- USGS Water Data for the Nation
- Global Change Master Directory
NASA Earth Science data & services directory - National Geophysical Data Center (NGDC)
Geomagnetic data, Marine geology & geophysics, sea floor & solid earth environment - NOAA Paleoclimatology Program
Data & information on natural climate variability - Tide Charts | Maine Boats Homes & Harbors
Maine & New Hampshire - EarthRef.org
Reference data and models
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