The U.S. Supreme Court case Concerned Citizens of Southern Ohio, Inc., et al. v. Pine Creek Conservancy District et al., 1976 revolved around a dispute over the construction of a dam in Adams County, Ohio by the Pine Creek Conservancy District (PCCD). The plaintiffs, Concerned Citizens of Southern Ohio (CCSO), challenged this project on environmental grounds and claimed that PCCD did not comply with federal laws such as the National Environmental Policy Act and Clean Water Act which require an impact statement for major projects affecting water quality or environment. However, it was ruled by lower courts that CCSO lacked standing to sue because they could not demonstrate sufficient injury-in-fact from the dam's construction. On appeal to the Supreme Court, it affirmed these decisions stating that while environmental damage can be considered an injury-in-fact under certain circumstances; here CCSO failed to show how its members would be personally affected or injured by this specific project beyond general concerns about environment. This case is significant as it clarified requirements for legal standing in environmental lawsuits - emphasizing need for concrete personal harm rather than abstract objections.

In the dissenting opinion for Concerned Citizens of Southern Ohio, Inc., et al. v. Pine Creek Conservancy District et al., Justice William O. Douglas argued that the majority's decision to dismiss the case was premature and inappropriate given its merits and implications on public interest. He contended that there were significant constitutional questions raised by petitioners regarding their right to a healthy environment, which should have been addressed in court rather than being dismissed outright due to procedural issues such as standing or ripeness. Furthermore, he criticized the majority's narrow interpretation of "injury" under Article III of Constitution, asserting that environmental harm should be recognized as a legitimate injury-in-fact capable of judicial redress even if it does not directly affect property rights or personal interests in traditional sense.