An estuary is defined as a semi-enclosed coastal body of water with freshwater flowing into it and a connection to the open sea. An estuary typically forms at the tidal mouth of a river, and receives sediment or silt carried in from terrestrial runoff. Types of estuaries include bays and sound.
The National Estuary Program has a list of estuaries around the country and if you check it out you will see that most of them are near salt water, but there is one along Lake Erie. It is Old Woman Creekand my family has visited there many times to learn more about the estuary, hike the trails and explore the area. The National Estuary Program offers some other interesting resources such as Estuary Live, Science and Data and more. They also have many educational resources, such as this tutorial, Using Google Earth to Explore Estuaries.
Here are some other interesting estuary resources on the Internet:
There is plenty to explore at this site by Liam Quin. The description reads:
Over 2,360 high-resolution images scanned from more than 100 different old or rare books, with extracts! Remains of Ruined Castles, Deserted Abbeys, Old Manor Houses, mansions and stately homes; also engravings, woodcuts and pictures of Old England and Wales; symbols, photographs and clip-art, Pictures of old books, and much more, stock images scanned from old books, leather-bound books and musty dusty books, by Liam Quin. If you have used these pictures, why not let me know? Link back here, and, if you want, also send me a copy and I can add it to the gallery.
ARKive Education is a free-to-use, multi-media resource bank for teachers and other educators. Making use of the stunning imagery available at the award-winning ARKive website www.arkive.org, ARKive Education provides downloadable, ready to use modules on a wide range of curriculum topics, suitable for geography, biology, environmental education and citizenship lessons.