Match the case with the principle on which it serves as precedent North Carolina's reasonable use rule, whereby ariparian owner is entitled to the natural flow of a stream running

through or along his land,undiminished and unimpaired in quality, except as may be caused by the reasonable use of water by other riparian owners." (citation omitted) "A municipal diversion of water for public water supply is not a riparian use, and if the diversion causes injury to downstream riparian owners the injury may be redressed in a court of law." (citation omitted) When a government entity interferes with a downstream owner's riparian rights, the reasonable use doctrine is superseded by the U.S.Constitution's takings clause