Dammed If They Do, Dammed If They Don’t
The Conundrum of the Buffalo Bayou Dams
Why so much water for so long in Buffalo Bayou?
May 26, 2016
The water in the normally empty reservoir had dropped only a few feet by the time we stood on the earthen dam looking down at the dark, opaque blue-gray surface. After almost a month, the rippling water below was still some twenty-three feet deep, and extended as far as we could see along the thirteen-mile long dam and far into the thousands of acres of flooded woods.
It had taken only a little more than twenty-four hours for the rains that began on April 18 to fill the vast flood control reservoirs in west Houston with a record amount of water: a total of more than 206,000 acre feet, a massive amount of water. Imagine 206,000 acres covered in a foot of water. Enough to cover more than eight times the acreage of both reservoirs to a depth of one foot. That much water would take an estimated four weeks to drain, according to reports at the time.
But that was only if there was no more rain. There was more rain, and it was taking much longer. The reservoirs, vast wooded parks with recreational facilities and nature paths, are still draining. As of May 24, the combined total of the two reservoirs was still about 90,000 acre-feet, down to a little less than half.
And Buffalo Bayou was still flowing high and fast, higher and faster for longer than ever before. Property owners upstream had flooded and property owners downstream who had hoped for more moderate flows were instead seeing long-standing trees falling into the fast-flowing stream, banks eroding, sediment collecting, debris causing water to back up onto their property.
Why was this happening and is there a way out of it?
The platform containing the control panel for the gates at Barker Dam standing in what would normally be an empty reservoir and park. Photo taken May 17, 2016
While We Wait
The Flood Control District’s Failing “Natural Channel Design” Projects
July 11, 2015
Well, the comments are in to the Army Corps of Engineers. The comment period that ended June 5 was not extended. So now we wait to find out what the Corps will do next about a permit for the Harris County Flood Control District’s controversial $6 million Memorial Park Demonstration Project. The flood control district wants to destroy one of the last natural stretches of Buffalo Bayou as it flows past Memorial Park in the middle of the city so that engineers can “build it better,” thus demonstrating exactly the wrong thing to do for erosion control and bank stabilization on the bayou.
It’s the wrong thing to do because the specially adapted trees and plants on the bayou (known as the riparian zone) protect the land from erosion, slow storm water and runoff, filter pollution and bacteria (and trash) from the water, provide shade and habitat, among many other vital functions. Razing the riparian buffer, as this project would do, digging up and running heavy equipment over the banks and bayou bottom are all contrary to Best Management Practices and the policies of virtually every federal and state agency charged with protecting the health of our waters, our wildlife habitat, and our soil.
What Are the Options?
So what are the Corps’ options?
Cottonwood downed on south bank west of Waugh by undercutting of banks in Buffalo Bayou Park “restored” by the Harris County Flood Control District. Several more mature trees have been lost since this photo was taken Jan. 26, 2015, by Jim Olive.
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