Can An Urban Stream Restore Itself?
Yes, With Room to Move. Free Rivers Are Healthier and Better for Flood Control
June 15, 2016
Updated with August 2016, April 29 and July 11, 2017, photos of self-repaired Hogg Bluff
By Susan Chadwick, Executive Director, Save Buffalo Bayou
This article is adapted from a presentation made at the Southwest Stream Restoration Conference in San Antonio, Texas, on June 2, 2016.
Save Buffalo Bayou is a non-profit organization founded two years ago to fight a public project described as a “restoration” project on one of the last natural stretches of Buffalo Bayou as it flows through the middle of Houston, past 1,500-acre Memorial Park and another 15-acre public nature preserve, the Hogg Bird Sanctuary. Since then our organization has expanded into broader, related issues. But today’s topic is restoration.
Here are some of the most common responses I would get when I would say that this mile-long plus stretch of the bayou is natural, along with what were some of the most common defenses of the project.
Sandy bank on a meander of Buffalo Bayou in Memorial Park. Photo by Jim Olive on April 2, 2016
The river’s not natural because the river changes.
It’s not natural because it’s been altered by high runoff from urbanization.
Trees fall into it.
It has terrible erosion problems. Look at those steep high banks!
It’s terribly eroded. Look at those sandy banks!
It’s eroding terribly. Sediment from the banks in Memorial Park washes up on the sidewalks of Buffalo Bayou Park we built downstream in the floodway right next to the river.
All that sediment carries bacteria. If we stop the banks from eroding so much sediment, we will reduce the bacteria. (Although sediment-laden Buffalo Bayou is less polluted than White Oak Bayou, which runs relatively clear and extremely foul due to being encased in concrete.)
And of course the big one: the river needs to be stabilized because it moves around.
Then there’s the argument, both implied and explicit, that prompted me to select this topic for presentation today: an urban stream cannot restore itself.
A Profound Misconception About How Nature and Rivers Work
All of those statements, of course, indicate a profound misconception about nature, about how a river works and how rivers benefit us.
A river is a living symbol of change. A living system. A dynamic process of nature that works for our benefit. Even the simple grains of sand work on our behalf to cleanse the water.
The Blinged-Out Master Plan for Memorial Park
City Council Quality of Life Committee Should Send Expensive, Overdone Master Plan Back to Drawing Board
March 24, 2015
The Memorial Park Conservancy is sending its $3.2 million unfinished master plan for Memorial Park to the Houston City Council’s Quality of Life Committee on Wednesday, March 25. The plan is so far a gaudy, overstuffed mish-mosh of bad, hazy, contradictory, wrong, and incomplete ideas developed apparently with the main goal of spending some $200-300 million, half of it public money.
The committee should reject this tacky, impractical document and consider directing hundreds of millions of dollars towards the purchase of new parkland instead.
Among other things, the plan misleadingly describes Buffalo Bayou as it flows along Memorial Park as “altered.” A slide shown at the final presentation of the plan to a packed audience at the Museum of Fine Arts Houston March 9 outlined the bayou in bright red and identified it as “altered Buffalo Bayou.” (See slide 18.)
We were stunned. Reasonable people would assume that “altered” meant channelized, dug up, scraped, engineered, rebuilt, etc. by humans or machines. In fact, the bayou flowing past Memorial park is one of the last unaltered stretches remaining in the city.
But no, “altered” in this case means “changed over time,” explains Shellye Arnold, executive director of the park conservancy. The bayou has adjusted to increased water flows from increased runoff due to development and paving; therefore the bayou is “altered,” says Arnold in an email.
The conservancy is developing the ten-twenty-thirty-year plan with the Houston Parks and Recreation Department and the Uptown TIRZ 16, which is funneling our tax money into the blinged-out project. It’s not clear who is in charge of the master plan, or even who is now in charge of Memorial Park, for that matter.
Central Texas limestone entryway proposed for Houston’s Memorial Park. Image from Memorial Park Conservancy.
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