How Houston’s Sprawl Makes It Harder to Cope With Storms Like Harvey

Hurricane Harvey has dropped more than 20 inches of rain on Houston, and the scenes from the city are devastating. Emergency crews carrying children through waist-deep water out of flooded homes. Nursing home residents waiting in a murky indoor lake to be rescued.

As the rescue effort unfolds (if you want to contribute, Slate has an overview of local charities helping victims of the storm), we should also be asking how to prevent or mitigate future storms. On a global scale, Harvey is another sign of the urgency of climate action to prevent superstorms from becoming ever more frequent and destructive.

Locally, while any city would be overwhelmed by so much rain in so little time, land use in the Houston region has made a difficult situation worse. Woods and prairies that used to provide a measure of resilience against stormwater are now covered in impervious surfaces, and development has sprawled into low-lying floodprone areas, increasing the public's exposure. Last year, ProPublica reported that the region "has paved over over 166,000 acres of mostly former coastal prairie since 2001, land that held highly absorbent grasses."

Jeff Wood, who grew up in the Houston region, has been thinking about how the city's development patterns contributed to the current crisis. At the Overhead Wire, Wood writes that the problem is not Houston's "lack of zoning" so much as a transportation and development paradigm that's completely heedless of considerations like stormwater absorption and steering clear of the floodplain.

Wood flags a Texas development tool called the Municipal Utility District as one vehicle for runaway sprawl in the Houston region:

All this development gobbling up natural lands was enabled by the region's expensive freeway habit:

More recommended reading today: Dezeen looks at how cities could use trees instead of bollards to prevent vehicular terrorism. And Buffalo Rising reports on a new design concept for the removal of the Scajaquada Expressway that involves making a historic bridge in the Olmsted-designed Delaware Park car-free.