Montana Code > Title 85 > Chapter 2 > Part 4 > § 85-2-421 Montana Code 85-2-421. Purpose Current as of: 2023 | Check for updates | Other versions 85-2-421. Purpose. The purpose of 85-2-421 through 85-2-424 and 85-2-426 is to facilitate the maintenance of a reliable record of water right ownership. Ask a legal question, get an answer ASAP!Click here to chat with a lawyer about your rights. Previous Next Part 4 Contents