Bill > HB704

This bill generally revises Montana's ground water laws by creating temporary legislative controlled ground water closure and monitoring areas in four specific regions: the Gallatin Valley, Helena Valley, Bitterroot Valley, and Missoula Valley aquifers. These areas will have strict rules about water appropriation, requiring permits for most new water uses and limiting exemptions. For example, in these areas, only small water appropriations (up to 0.5 acre-feet per year) will be allowed without a permit, primarily for single living units, stockwater, or specific subdivision scenarios. All new water rights in these areas must be metered and reported annually to the state department. The bill also establishes new criteria for designating controlled ground water areas based on factors like water quantity, ground water levels, and potential impacts on existing water rights. Additionally, the bill provides mechanisms for monitoring these areas, with reviews at least once every two years to determine if changes in area status are necessary. These provisions are designed to better manage and protect Montana's ground water resources, particularly in areas experiencing significant water use and potential depletion. The temporary controlled ground water closure will be in effect until January 1, 2032, allowing time for further study and potential long-term management strategies.

Agriculture and Natural Resources, Justice

https://bills.legmt.gov/#/laws/bill/2/LC4169