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Aquaculture Network Information Center
AquaNIC is the gateway to the world's aquaculture resources.
Astronomical Data from the U.S. Naval Observatory
This page provides astronomical data from the U.S. Naval Observatory. Includes sunrise, moonrise, moon phase, and other information that may be useful in navigation.
Biology Text Book Online
An updated online biology book for your reference use.
Encyclopedia of terms related to the environment
US EPA's encyclopedia of terms related to the environment. Look up the meaning of any word you need to know.
Fishing Glossary - Louisiana DWF
A glossary of fishing terms and information from the Louisiana Division of Wildlife and Fisheries
Glossary of Fisheries Terms - Iowa DNR
A Glossary of Fisheries Terms presented by the Iowa DNR.
Maps by Sportsman's Interactive - Outdoor Map Guide
Find the maps you need by state and watershed - Maps by Sportsman's Interactive - Outdoor Map Guide - Uses USGS stream flow data.
Maryland Department of Natural Resources Environmental Data Page
DNR collects environmental data throughout Maryland, including the Chesapeake and coastal bays. A large portion of this data is available for teachers to use in their classrooms.
NEPA - National Environmental Protection Act
The National Environmental Policy Act (NEPA) requires federal agencies to integrate environmental values into their decision making processes by considering the environmental impacts of their proposed actions and reasonable alternatives to those actions. To meet this requirement, federal agencies prepare a detailed statement known as an Environmental Impact Statement (EIS).
Reed's Nautical Almanac - Books, Tides, Currents, Charts, Weather, Boating, Sail
Reed's Nautical Almanacs - Your comprehensive nautical reference 1-800-995-4995 email: info@ReedsAlmanac.comThomas Reed Publications, Inc.
TopoZone - The Web's Topographic Map
Free interactive USGS topo maps of the entire United States
USGS Biology in Focus, A Report on Our Biological Resources
The USGS Biological Resources Division provides reliable, impartial information which supports the sound management of our nation's biological resources.
USGS National Water Conditions
USGS National Water Conditions shows streamflow information for the US
Watershed Atlas from the EPA
Home page of EPA Watershed Atlas, featuring US, regional and state maps, information on various watersheds from the US.
Welcome to Maptech! USGS Topographic Maps and NOAA Nautical Charts
Maptech Mapserver Maps and Charts with GPS interface,digital USGS topo maps (topographic maps) on CD ROM with FREE viewer and navigation software with GPS interface. Electronic (digital) NOAA nautical charts for marine navigation with marine viewing and navigation software with GPS interface. ChartKit waterproof charts Embassy cruising guides on CD ROM, Aeronautical Sectionals