Not most. The majority of Third Ward properties sit in FEMA Zone X or X (Shaded), which don’t mandate flood insurance for mortgages. However, parcels along the southern boundary near Brays Bayou fall in Zone AE where coverage is required. Annual premiums range $800–$2,400. The MacGregor Park detention basin provides some localized flood mitigation.

Yes, they’re under review. FEMA’s MAAPnext program is evaluating Brays Bayou tributary drainage patterns that affect Third Ward’s southern blocks. No preliminary maps have been released yet for this section. Current X (Shaded), X, and AE designations remain effective, but property owners should monitor for boundary shifts as updated rainfall models are finalized.

Moderately. Third Ward recorded approximately 700 FEMA flood claims after Harvey in August 2017, concentrated along low-lying blocks near Brays Bayou and Wheeler Avenue. Street-level flooding of 1–2 feet affected older residential areas, though the MacGregor Park detention basin absorbed some overflow. Damage was less severe than neighboring Meyerland or Braeswood Place.

Third Ward sits on the northern fringe of the Brays Bayou watershed, where risk is driven more by localized street drainage than direct bayou overflow. Aging infrastructure in one of Houston’s oldest historically Black neighborhoods combines with dense lot coverage to limit stormwater absorption. The MacGregor Park detention basin provides relief but serves a limited catchment area.