1. http://www.estuaries.org/facts.html

2. National Estuary, Natural Estuary Program http://www.epa.gov/nep/nepbroc.html. Febuary 1, 1997

3. Restore Estuaries,http://www.estuaries.org/campaign.html. Febuary 1, 1997

4. Bright, Greg. Aquatic Science Company Commonwealth Biomoniting http://www.trader.com/users/5012/0614/water.htm. Febuary 1, 1997