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Perkiomen Watershed Conservancy
Founded to protect and conserve the natural resources of the 362 mile Perkiomen Watershed. Promotes an environmental ethic through education, land conservation and watchdog activities.
Stroud Water Research Center
Seeks to advance the knowledge of freshwater ecosystems through interdisciplinary research into all aspects of streams, rivers, and their watersheds.
Watershed Atlas of the Allegheny River
Rich source of information about the environmental resources of the Allegheny River watershed and how human activities affect water quality and the environment.
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