Breaking News: Trash Washes Up From Early Twentieth Century
Old Bottles Surface on the Banks of the Bayou
Site is a State Antiquities Landmark
Bonus: Some Geology and History
May 18, 2017
On a recent trip down Buffalo Bayou, pausing to document the springs seeping out of the banks, we stopped at one of our favorite spots: the wide sandy bank of what we call the middle meander — so named because it’s the middle meander in that 1.25-mile long stretch of the forested bayou targeted for destruction by the Harris County Flood Control District.
This sharp bend in the river is located at the eastern boundary of Memorial Park, with a small tributary flowing into it and very old high banks on the downstream side. It is a natural stormwater detention area, and elsewhere the flood control district is spending millions to build detention basins in or near our bayous. But here the district’s plan is to spend millions to fill in a detention area and dig a new channel for the bayou through the woods on the south bank of the bayou owned by the River Oaks Country Club. Why the members of the club would agree to that is a mystery. The plan also calls for grading the ancient high bank, leveling the area, and planting it all with turf grass. An access road for heavy construction equipment would be bulldozed through the public forest from the maintenance yard near Memorial Drive to the bayou.
Unusually, in this meander, the bayou deposits sediment on the outside bend, the park side of the stream, causing the bank to widen. (Normally sediment is deposited on the inside bends and picked up on the outside.) But the high outside bluff here is composed in part of very hard, resistant clay. This reversed phenomenon might also in part be the result of the blocking flow of the tributary shooting across the channel during rain events. And Geologist Tom Helm thinks that a fault running through the meander might have caused the bayou channel to shift somewhat to the southeast over time.
Here is a photo of Tom pointing to the downshifted layer of dark red clay in the strata of the face of the high bank, which is part of the tens-hundred-thousand years old late Pleistocene-era meander-belt ridges carved out of the earth at the end of the last glacial period, when giant sloths, zebra horses, and saber-toothed cats roamed through Memorial Park. We still have American alligators (alligator mississippiensis) and alligator gar from that period. The high cut banks of these meander-belt ridges are long-established characteristics of our west-to-east meandering streams in the Houston region and serve as as bumpers slowing the flow. The dark layer Tom is pointing to in the face of the high bank of the middle meander is offset by about three inches, possibly indicating a fault.
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- Tom Helm pointing to his right. Invasive Johnson grass in foreground.
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- Tom pointing down to his left. Photos April 29, 2017
Invaders. Pull Them Out!
When we stepped out of the canoe onto the sandy north bank of the meander, we were dismayed to discover invasive Johnson grass growing all over the beach. In the past this lovely sand bank was naturally landscaped with native smartweed, ground cherry and young box elder and black willow, all the proper native vegetation intelligently arranged by the bayou as it worked to stabilize the sediment and plan for new growth. But now this invader was taking over. We had seen it also at the boat launch in Memorial Park at Woodway. Very discouraging. Anyone who wishes to organize Johnson grass-pulling parties is encouraged to do so. The Memorial Park Conservancy unfortunately does not consider maintaining the banks or bayou woods part of its job, instead largely confining routine maintenance activities to mowing down the sedges and other wetland plants in the bogs of the park, leaving behind large, deep ruts. How nice it would be if the Conservancy respected the natural character and landscaping of our park.
A Surprise from the Past
As we inspected the springs that flowed out of the high bank, we were surprised to find a large pile of broken glass bottles and pottery embedded in the mud. The glass was thick and had an old-fashioned shape. The pieces looked very old. Geologist Bill Heins, who explores the banks of the bayou regularly with his dog, suggests that the bottles and pottery had washed out from an old trash dump in a filled gully higher up the bank.
Very possibly the pottery and bottles date from the era of Camp Logan, a World War I military training camp established in 1917, part of which would become Memorial Park after the war. Beginning in August of 1917 there was a large military hospital, as well as a landfill, operating on the north bank of the bayou, eventually occupying over 100 acres of what is now the Hogg Bird Sanctuary and extending westward into what is now the park’s South Picnic Loop, according to Janet Wagner, landscape architect and historian and former chair of the Harris County Historical Society. In 2014 Wagner wrote to the Corps of Engineers about the archeological significance of the bayou in the proposed project area. The hospital, she noted, served some 1,500 men and continued caring for veterans after the war. In 1919 the hospital and buildings were transferred to the Public Health Service, with some of them leased to the newly formed City-County Hospital District. In 1921 the Veterans’ Bureau took over the hospital and two years later began evacuating the veterans to other facilities around the state. One year later, in 1924, Will and Mike Hogg and their real estate partner, Henry Stude, purchased the hospital grounds and then sold at cost a total of nearly 1,500 acres of what had been Camp Logan to the City of Houston for the creation of Memorial Park.
In May of 2013 the Texas Historical Commission designated the former site of Camp Logan a State Archeological Landmark, now known as a State Antiquities Landmark. The designation requires that the landowner receive a permit from the historical commission before conducting any work on the site.
Here are photographs of the glass and pottery remnants we discovered on the bank of Buffalo Bayou in April 2017.
Very old broken bottles and pottery shards on a bank of Buffalo Bayou in April 2017.
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.
What Flood Control Is Not Telling Us
“Maintenance” Road Planned Along Bulldozed Bank
June 4, 2015
Updated June 8, 2015. See below.
Updated June 7, 2015. See below.
The Harris County Flood Control District is planning to create a 12-foot wide pathway for maintenance vehicles along the graded bank of Buffalo Bayou in Memorial Park.
The maintenance road parallel to the bayou is not included in the plans to “restore” the wild banks of the bayou submitted to the Army Corps of Engineers by the flood control district.
The district revealed the plan for what it is calling a “Monitoring Access Zone” at an invitation-only meeting Tuesday, June 2, 2015. The meeting was one of a series to develop a planting plan for the $6 million “erosion control,” “bank restoration,” “water quality improvement,” “flood conveyance” project known as the Memorial Park Demonstration Project. Apparently the planting plan is not progressing well, as at the meeting the district proposed planting tall fescue, an invasive exotic almost impossible to control. Tall fescue has been the scourge of Texas prairies for several decades at least.
“Tall fescue forms a near-monoculture and is responsible for the loss of otherwise undisturbed prairie remnants throughout Texas and the Midwest,” reports one of our landscape ecologists.
Well, so much for the district’s native plant expertise and commitment to a native-only riparian forest.
This beautiful tributary extending deep into the center of Memorial Park is labelled a “gully” by the flood control district. It will be plugged. Photo by Jim Olive on March 25, 2015.
No trees, no “better than ever” riparian forest
Little is known about the previously undisclosed but long-suspected “Monitoring Access Zone.” According to a source who was at the meeting, the 12-foot wide pathway will be planted with some sort of seed mix for several years until the district is certain the “restored” banks will hold. They won’t hold, of course, so this grassy, flat “access zone” is likely to be permanent.
Which means no trees, no “better than ever” riparian forest and wildlife habitat, banks bulldozed and leveled even through the so-called “no-work zones.”
What is Federal Jurisdiction
The district explained at the meeting that it was not required to reveal the “monitoring” road to the Army Corps of Engineers because it does not impact federal waters, presumably because the road will be above the Ordinary High Mark, which is the lateral limit of federal jurisdiction.
But it will not be above the OHWM, which in a significant section of the park extends deep into the forest as part of the flood plain, a natural detention area, including swales and wetlands, all of which are under federal jurisdiction. The road and the “bankfull bench” upon which it will sit will also fill and block at least two tributaries, which also are under federal jurisdiction, although on its plans the district labels both tributaries “gullies,” thereby attempting to remove the tributaries from federal jurisdiction. (See sheets 16 and 18.) Gullies are classified as an “erosional feature” by federal law. An actual gully leading from the South Picnic Loop parking lot is oddly labeled a “tributary.” (See sheet 16.)
So far we don’t know the length of “Monitoring Access Zone,” whether it extends along the entire north bank of the project area, including private property, or whether a “Monitoring Access Zone” will also be built on the south bank of the project, land which belongs to the River Oaks Country Club.
Guess we’ll have to ask the flood control district. And object to the Corps.
What else is the flood control district not telling us?
Snowy egrets flying past another tributary adjacent to the middle meander in Memorial Park, also labeled a gully by HCFCD. The banks here will be bulldozed, and the bayou filled in and a new channel cut further south through River Oaks Country Club property. Photo by Jim Olive.
Update June 7, 2015
There is no “road” planned for maintenance vehicles on the wild banks of Buffalo Bayou targeted for “restoration” by the Harris County Flood Control District.
Jason Krahn, manager for the district’s controversial $6 million project to “improve” one of the last natural stretches of Buffalo Bayou, wrote in an email to Save Buffalo Bayou on June 5 that “there is no road proposed for the post construction monitoring activities associated with MPDP [Memorial Park Demonstration Project].”
Participants in the district’s Vegetation Advisory Workgroup for the dredging and channelizing project had been told that for several years after “restoration” there would be a grassy 12-foot wide “Monitoring Access Zone” for maintenance vehicles to access the bulldozed and reconstructed banks of what is now a perfectly healthy historic natural area in need of no monitoring or maintenance whatsoever–other than picking up the trash and mitigating runoff from trails and parking lots.
This “Monitoring Access Zone,” workgroup participants were told, would remain in place until there was no longer any need for monitoring, replanting, watering, removal of noxious invasive vegetation, or repairs to failing “stabilized” banks, etc. Presumably removal of noxious invasive vegetation would not include the tall fescue, a noxious invasive plant, described above, that the district earlier this month was contemplating planting. Responding to objections, the district reportedly has changed its mind about the tall fescue.
Krahn said that monitoring activities would take place on both the north and south banks of the bayou in the project area, which includes Memorial Park and the Hogg Bird Sanctuary on the north and the River Oaks Country Club on the south.
He also wrote that “no work zones” on the bayou were in fact “no work zones,” despite the fact that heavy equipment would be driven over the banks, according to the district’s plans. However, above the Ordinary High Water Mark these “no work zones” would not be graded into bankfull benches, wrote Krahn, because “these are portions of the project area that already have the necessary geomorphic characteristics for a sustainable, stable channel.” A bankfull bench is a flat or sloping area above the bank of a stream that slows overflowing floodwater.
Asked to clarify the “Monitoring Access Zone,” Krahn has not yet replied.
But it’s not a “road,” Krahn insisted. So we won’t call it a “road.”
How about sendero?
Updated June 8, 2015
Project Manager Jason Krahn has clarified the “monitoring access zone.” In an email to Save Buffalo Bayou Monday morning, Krahn wrote:
“To provide for the monitoring access as outlined in the Atkins report [the post-construction monitoring plan included in the revised permit application], the District is working to define the appropriate spacing for vegetation within a portion of the flood plain planting zone. A spacing of 12-foot in width is currently being considered to allow for this access, or ‘monitoring access zone’ as you’ve referenced it in your previous email correspondence.”
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