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Lavaca County emergency management lowers river alarms, reviews siren coverage after Hill Country floods
Summary
At its July 2025 meeting the Lavaca County Commissioners heard a detailed briefing from Emergency Management Coordinator Greg Merley on flood risk following Hill Country storms. Merley said the county lowered river alarm thresholds by five feet, reviewed siren coverage and is updating its emergency plans and notifications.
At the July 2025 Lavaca County Commissioners Court meeting, Emergency Management Coordinator Greg Merley reported that the county has lowered river-alarm thresholds by five feet and is reviewing local alert infrastructure after heavy flooding in Texas Hill Country.
Merley told the court he had reduced the Lavaca River gauge alarm settings “five feet from where they already were” to give officials “hours, possibly days” to prepare rather than minutes. He described three recording stations on the Lavaca River (a northern gauge at the Whittingham/Kaminsky bridge, a gauge at Breslau and a gauge at the Hallettsville bridge) and said the county is monitoring those sites more closely.
The briefing explained why the county adjusted detection and notification…
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