Here are a list of websites I found helpful. These are websites that were not directly linked to in my website.
Mrs. Murray's 4th Grade Science
An excellent resource for the VA Natural Resource SOL (labeled 4.8 here). This page has great background information and wonderfully organized standards information. My vocabulary was taken from here as well as some of my information for my foldables.
The U.S. Geological Survey
This is the Water Science School. They have lots of background information on water (the cycle, its properties, the quality, etc). They also have a great scientific dictionary on all water related concepts.
The Geology of Virginia
This website is a resource for information, photographs, maps, and diagrams of the geology of the Commonwealth
Virginia Department of Conservation and Recreation
A great resource for state park information, as well as background information on VA water resources.
SOL Related Book Search
This website allows you to search through any SOL by subject and then content area to hone in on a great and specific book for your next lesson!
Virginia Department of Game and Inland Fisheries
This website has an enormous amount of information on native Virginia species.