Great River Hydro, LLC; Notice of Intent To Prepare an Environmental Assessment
Published Date: 2/2/2026
Notice
Summary
Great River Hydro, LLC lowered water flows at the Fifteen Mile Falls Hydroelectric Project due to drought, affecting parts of New Hampshire and Vermont. The government is now preparing an environmental check to see how this change impacted the area, with results expected by April 10, 2026. This review helps decide if any future changes or costs are needed to protect the river and community.
Analyzed Economic Effects
2 provisions identified: 1 benefits, 1 costs, 0 mixed.
Temporary River Flow Reduction
If you live in parts of New Hampshire or Vermont along the Connecticut River, river flows from the Comerford Development were reduced to 600 cubic feet per second (cfs). The reduction ran from September 29, 2025 through December 15, 2025 instead of the usual seasonal minimums of 818 cfs (June 1–September 30) or 1,145 cfs (October 1–March 31).
FERC Environmental Assessment and Comment Period
FERC staff will prepare an environmental assessment for the Fifteen Mile Falls project and plans to issue the EA by April 10, 2026. The EA will be available for a 30-day public comment period, and all comments will be reviewed and considered in the Commission's final decision.
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