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BRA committee hears early‑work findings for Allens Creek reservoir; alternatives analysis next
Summary
Consultants told the Brazos River Authority committee that surveys, geotechnical testing and environmental fieldwork done in the early‑work phase generally support proceeding to an alternatives analysis; staff emphasized permitting — especially Corps 404/Section 10 review — as the project’s main schedule and cost driver.
The Brazos River Authority’s advisory committee received an update on early‑work studies for the Allens Creek reservoir project on the BRA’s roughly 9,500‑acre site in Austin County, where the authority holds a TCEQ water right to impound up to about 145,000 acre‑feet and a modeled yield near 99,650 acre‑feet. Consultants said those studies have given the team a solid data foundation for the next step: an alternatives analysis that will trade water storage against mitigation and construction cost.
The project team said the March contract for early work focused on boundary and topographic surveys, bathymetry, cultural and environmental field checks and geotechnical investigations. "We were able to get the 2024 raw lidar data from Austin County," Gannett Fleming consultant Scott Birch said, a data set the team validated with more than 100 ground‑truth points and estimated saved about $560,000 versus purchasing new flights. Consultants also…
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