Texas Porch
Flood / Hurricane Practical

Storm Surge Can Push Into Calhoun County Bays and Towns

Hurricane Harvey made landfall on August 25, 2017. Surge heights varied sharply around Calhoun County. The National Weather Service reports storm tide roughly 3 to 6 feet above ground at Seadrift and Port O'Connor, and surge above 10 feet at Port Lavaca. One town's number does not describe the whole coast.

Look up your address at the FEMA Flood Map Service Center and ask the local floodplain office about the current map. A or V on the map means high risk. In communities in the flood program, a federally backed mortgage requires flood insurance there. A lower-risk map zone does not mean no flood risk.

The county hurricane page links to evacuation routes and Texas emergency resources. Use National Hurricane Center and National Weather Service alerts for current storm information, and follow local evacuation orders. Plan where to go and how to leave before roads flood.

Content last revised 2026-07-11

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