Water Risk Profile — ZIP 78521
Flood risk, local cost data, climate factors, and insurance context for your ZIP code.
Flood Risk
High
Cost Range
$1,725–$9,775
Avg Response
42 min
NFIP
State participates
Local Climate & Risk Factors
Brownsville, Texas faces a diverse water damage risk profile shaped by the state's massive geographic range: East Texas receives 50+ inches of annual rainfall and faces flooding from Sabine, Neches, and Trinity River corridors; Central Texas faces flash flooding from intense hill country thunderstorms on impermeable limestone geology; Gulf Coast properties face hurricane season storm surge and flooding; and all of Texas experienced the catastrophic 2021 Winter Storm Uri pipe burst epidemic when temperatures dropped below 0°F statewide in buildings without freeze-resistant design. Texas Prompt Payment Act (Art. 542A) requires insurers to acknowledge claims within 15 days and pay within 5 days of acceptance — strong enforcement provisions with 18% interest on late payments.
Flood-prone areas: Brownsville's unique resaca network — former channels of the Rio Grande — creates dozens of linear flood corridors running through residential areas, and when tropical systems stall over the Lower Rio Grande Valley, these oxbow lakes overflow into streets and yards in Southmost and the Palm Boulevard corridor within hours of heavy rainfall onset. The Arroyo Colorado serves as the primary drainage channel for much of northern Brownsville, but its capacity is exceeded during the 8–12 inch rainfall events that commonly accompany Gulf of Mexico tropical systems, leaving Garfield and north Brownsville homes inundated for days.
Water Category Cost Table — Brownsville, TX
Extraction & drying cost per square foot by IICRC water category
| Water Category | $/sq ft |
|---|---|
| Category 1 — Clean Burst supply line, clean appliance overflow | $3.15–$7.74 |
| Category 2 — Gray Dishwasher, washing machine, toilet bowl (no feces) | $7.74–$9.37 |
| Category 3 — Black Sewage backup, floodwater, toilet overflow with feces | $11–$13.86 |
Estimates exclude reconstruction (drywall, flooring replacement). National benchmarks: Cat 1 $3.75–$4.25, Cat 2 $4.10–$6.50, Cat 3 $7–$7.50/sq ft — adjusted for Brownsville market (3.7–12.6/sq ft range).