General Reference
Business Data
Environmental Data

Includes downloadable climate datasets

Global environmental data from satellites

Precipitation and surface temperatures

Estimating the levels of greenhouse gas (GHG) emissions and removals

World's largest active archive of weather data

Climate summaries on temperature, precipitation, winds, pressure, snow, etc.

Atmospheric data, ocean data, geologic data, etc.

Data on surface water, ground water, water quality and more

National digital data bases (1985 & 1990) of water-use collected every five years for each state