The rights to the beneficial use of any water of any interstate tributary of the Yellowstone River acquired prior to and including January 1, 1950, shall not be impaired by or subject to this part.
Mont. Code Ann. § 85-20-107
Status of prior rights
En
Official source: Montana Code Annotated (Montana Legislature). Reproduced from public-domain Montana statutes; confirm against the official source for the current text. Not legal advice.