Dakota Mainstem Water Supply Project Feasibility Study Act

Legislative bill overview

HR 7331 authorizes a feasibility study for the Dakota Mainstem Water Supply Project, which would examine the technical, economic, and environmental viability of developing water infrastructure along the Missouri River main stem in the Dakota region. The bill directs relevant federal agencies to conduct this study and report findings to Congress, laying groundwork for potential future water resource development.

Why is this important

Water infrastructure in the Upper Missouri River basin affects agricultural operations, municipal water supplies, and ecosystem health across multiple states. A feasibility study could inform decisions about multi-million dollar investments in water storage or conveyance systems that would impact water availability, irrigation capacity, and environmental conditions in the region for decades.

Potential points of contention

• Environmental impact concerns: Any water infrastructure project on the Missouri River raises questions about impacts on endangered species (pallid sturgeon, least tern), river ecosystems, and wetlands, which could conflict with existing Endangered Species Act protections
• Interstate water rights: The Missouri River is governed by interstate compacts and tribal treaties; new projects could trigger disputes over water allocation between states and affect Native American water rights and sovereignty
• Cost and funding: Feasibility studies often precede expensive construction projects; taxpayer expense and whether beneficiaries should shoulder costs rather than federal government remains contentious