The Northeast region is known for its wealth of lakes and ponds — more than 30,000 bodies of water that store freshwater, sustain a diversity of fish, birds, invertebrates, and aquatic plants, and support sport fisheries and recreational activities — and now there is a common way to classify them. Developed by experts from The Nature Conservancy, ten states, and the U.S. Environmental Protection Agency, the classification scheme is based upon four key variables that are used to organize aquatic natural communities, and can be mapped consistently across the region and United States.
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