S. D. Warren Co. v. Maine Board of Environmental Protection
Supreme Court of the United States
1Opinion of the CourtJustice Souter
delivered the opinion of the Court. †
The issue in this case is whether operating a dam to produce hydroelectricity “may result in any discharge into the navigable waters” of the United States. If so, a federal license under §401 of the Clean Water Act requires state certification that water protection laws will not be violated. We hold that a dam does raise a potential for a discharge, and state approval is needed.
I
The Presumpscot River runs through southern Maine from Sebago Lake to Casco Bay, and in the course of its 25 miles petitioner, S. D. Warren Company, operates several hydro-power…
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