The 1921 Flood and the River Walk That Came From It

On September ninth, nineteen twenty-one, more than five inches of rain fell on San Antonio in a single day. The San Antonio River, which ran through the center of the city in a curving channel roughly one story below street level, could not hold it. The flood that followed killed fifty-one people and left large sections of downtown inundated.

The city's initial response was practical and grim: pave over the bend, fill it in, turn the river channel into an underground drainage culvert and build streets on top. The San Antonio Conservation Society, founded a few years later in nineteen twenty-four specifically to fight the destruction of historic buildings, organized against this plan and prevailed. The bend would stay.

What to do with it instead took another decade to resolve. In nineteen twenty-nine, a local architect named Robert Harvey Harold Hugman submitted a proposal. He imagined a network of shops, restaurants, and cafes built along the banks of the river channel, connected by stone walkways, bridges, and stairways that descended from street level. He called it The Shops of Aragon and Romula, a name that did not survive, though the concept did.

Funding arrived with the New Deal. A Works Progress Administration grant of three hundred fifty-five thousand dollars and the labor of more than one thousand workers transformed the channel between nineteen thirty-nine and nineteen forty-one. The result was what is now called the River Walk, or Paseo del Rio: a mile-and-a-half network of paths, bridges, and plantings one story beneath the streets.

The River Walk is now one of the most visited urban spaces in the United States. Fifty-one people died in the flood that made it necessary. Their names are not attached to what was built in its aftermath, but the thing that was built came directly from the water that killed them.