Iowa Gets Green Light for New Dam and Water Pipeline
Published Date: 7/30/2026
Notice
Summary
NRCS announces the availability of the Record of Decision (ROD) for the Clarke County Water Supply Project Plan and Final Plan- Environmental Impact Statement (Final Plan-EIS) in Clarke County, Iowa. NRCS has selected the "Water Supply Reservoir with Dam at Site 4B Alternative" as the preferred alternative. This alternative includes constructing an earth-fill embankment dam with a reinforced concrete pressure-pipe principal spillway and vegetated auxiliary spillway; installing a water-supply pipeline (including a pumping station and ground storage reservoir) to transport water from the reservoir to the water-treatment plant; and relocating a segment of a local road (Truro Pavement).
Analyzed Economic Effects
3 provisions identified: 0 benefits, 0 costs, 3 mixed.
Reservoir and Dam Selected at Site 4B
NRCS selected the "Water Supply Reservoir with Dam at Site 4B" alternative for the Clarke County Water Supply Project in Clarke County, Iowa. The decision calls for constructing an earth-fill embankment dam with a reinforced concrete pressure‑pipe principal spillway and a vegetated auxiliary spillway, as described in the February 2026 Final Plan‑EIS and announced in the Record of Decision published July 30, 2026.
Pipeline, Pumping Station, and Storage Installed
The selected alternative includes installing a water‑supply pipeline, a pumping station, and a ground storage reservoir to transport water from the new reservoir to the water‑treatment plant in Clarke County, Iowa. These features are part of the project described in the February 2026 Final Plan‑EIS and documented in the ROD announced July 30, 2026.
Local Road Segment Will Be Relocated
The selected alternative includes relocating a segment of a local road (Truro Pavement) as part of the Clarke County Water Supply Project. NRCS documents this road relocation in the Record of Decision for the Final Plan‑EIS published July 30, 2026.
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