Alerts Houses are surrounded by flood waters after Hurricane Delta passed through the area on Oct. 10, 2020 near Lake Charles, Louisiana. Photo: Chandan Khanna (Getty Images) There’s no question that flooding is becomingworse due to the climate crisis pushing up our sea levels and making heavy downpours more common. But the risk doesn’t affect us all equally. A report released by the real estate brokerage firm Redfin this week shows that formerly redlined areas are more vulnerable to the threat of floods. Advertisement Redlining was a discriminatory lending practice in the 1930s, wherein house appraisers mapped cities for the federal Homeowners’ Loan Corporation with different colored lines to indicate how desirable areas were to live in. Neighborhoods deemed “best” or “still desirable” were marked with green and blue lines, respectively. Those considered “definitely declining” were marked in yellow, and zones declared “hazardous”—overwhelmingly Black neighborhoods—were outlined in red. The reverberations of this segregationist history are still visible. Today, 58.1% of residents of neighborhoods that were marked with yellow or red lines are still people of color, compared with just 40.4% of households in neighborhoods that were labeled blue or green.