Northern California River Watch v. Wilcox

An endangered plant, Sebastopol meadowfoam, was found on wetlands the Schellingers sought to develop under a Clean Water Act permit, and state wildlife employees removed it during an investigation; River Watch sued under ESA § 9, arguing the wetlands were "areas of federal jurisdiction" because they fell under CWA jurisdiction, while the government urged Chevron deference to Fish and Wildlife Service guidance defining the term.