Sponsors
The bill prioritizes steady, predictable summer lake levels to benefit lakeside residents and tourism and provide clearer operational direction, at the cost of reduced flexibility in reservoir management that can raise downstream flood risk, cut hydropower/storage capacity, and constrain responses to drought or high-flow events.
Lakeside homeowners, recreational users, and local tourism businesses benefit from more predictable summer lake levels (June 15–Sept 15), improving boating, swimming, shoreline access, and protecting peak-season revenue.
Local and state governments and stakeholders gain clearer operational direction through specified guidance to the Secretary of the Interior, reducing management uncertainty and improving coordination of water operations.
Downstream communities and ecosystems could face increased flood risk or altered river flows if excess reservoir water is released to hold summer levels, raising health and safety concerns and potential property damage.
Reservoir releases to maintain minimum lake elevations may reduce stored water available for hydropower, lowering generation capacity or revenue and potentially affecting electricity supply and costs.
Mandating fixed summer elevations can limit the Secretary's flexibility to respond to droughts or heavy precipitation, constraining the ability to balance competing needs (irrigation, instream flows for fish, flood control) and harming ecosystems and water users.
Based on analysis of 2 sections of legislative text.
Introduced January 23, 2025 by Ryan Zinke · Last progress January 23, 2025
Requires the Secretary of the Interior to keep Flathead Lake within a narrow elevation band each summer by moving water into the lake from Hungry Horse Reservoir or releasing excess downstream. From June 15 through September 15 each year, the lake must be at least 2,892.0 feet mean sea level (MSL) and must not exceed 2,893.0 feet MSL. The rule directs reservoir operations to meet those targets during the summer season but does not provide new funding or change other water-rights or operational authorities explicitly.