South Carolina v. North Carolina
Headline: Catawba River water dispute: Court allows a regional power company and a bistate water project to join the lawsuit, but blocks Charlotte’s separate participation, letting businesses protect operations and license terms while state control remains central.
Holding: The CRWSP and Duke Energy may intervene because they showed separate, compelling interests not represented by the States, while Charlotte may not because North Carolina adequately represents its water-use interests.
- Lets Duke Energy defend its dam operations and pending license terms in the case.
- Allows the bistate water project to protect its joint operations and water transfers.
- Keeps the State in control of municipal water claims, blocking Charlotte’s separate lawsuit role.
Summary
Background
South Carolina sued North Carolina, saying North Carolina authorized transfers of Catawba River water that leave South Carolina short, especially in drought. Three nonstate entities asked to join: a bistate water-supply project that serves counties in both States, Duke Energy which runs dams and has a major federal license, and the city of Charlotte, which holds a large transfer permit.
Reasoning
The Court applied a long-standing test requiring a nonstate movant to show a separate, compelling interest not properly represented by its State. The Court found the bistate water project’s shared ownership, cross-border transfers, infrastructure investment, and unique operational balance gave it a distinct interest. Duke Energy’s control of dams, its 50-year federal license, and its multistate agreement were also judged uniquely relevant. By contrast, Charlotte’s water transfers were treated as part of North Carolina’s share and adequately represented by the State.
Real world impact
As a result, Duke Energy and the bistate project can participate as parties to defend operations, licensing, and negotiated flow agreements; Charlotte cannot join separately and will rely on North Carolina’s representation. The ruling is about who may be a party, not the final allocation of water, and the court’s later decision on apportionment could still change outcomes.
Dissents or concurrances
A separate opinion agreed on denying Charlotte but protested allowing Duke and the bistate project. That opinion warned intervention by private entities in state water apportionment is unprecedented and risks complicating cases best handled at the state level or through amicus participation.
Opinions in this case:
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