19.7 Acres Cleared on West Lake Houston Parkway

Contractors have cleared two parcels of land totaling 19.7 acres on West Lake Houston Parkway between Upper Lake Drive and Kings Park Way. They are now installing drainage. The developer (High Street Residential) specializes in multi-family housing. A second developer familiar with project confirmed that High Street plans to build apartments.

Location

The map below shows the location of the two parcels on West Lake Houston Parkway. They are approximately halfway between the West Fork at the top of the frame and FM1960 at the bottom.

From HCAD.org.

Aerial Photos Taken 5/20/22

Looking north across the two parcels. West Lake Houston Parkway is on left.
Looking south from intersection of West Lake Houston Parkway and Upper Lake Drive.

The contractor appears to run a clean operation. They maintain the entrances well. And they keep adjacent streets clean. Silt fences surround the work area. So far, so good.

Parent Company, High Street Residential, Specializes in Multifamily

A sign at the entrance to the property says “High Street Residential.”

The company’s website says, “High Street Residential, a wholly-owned operating subsidiary of Trammell Crow Company, specializes in the development of multifamily housing.”

Elsewhere it says, “Renting is becoming the norm for the Millennial generation, many of whom do not own cars and view home ownership as less desirable as they seek flexibility for job changes. At the same time, empty nesters are looking to downsize to a maintenance-free lifestyle …”

High Street’s Facebook page shows a long stream of high-end apartment complexes.

The nationwide firm has more than 10,000 units in process or in the pipeline totaling more than $2 billion.

Operating Company is Kingwood Residences HTX LLC

Harris County Appraisal District (HCAD) identities the owner. The parcels belong to KINGWOOD RESIDENCES HTX LLC. That company was incorporated in Delaware last July and in Texas last August. Developers often form operating companies for each of their projects.

The local address for KINGWOOD RESIDENCES HTX LLC is 2800 POST OAK BLVD STE 400, HOUSTON TX 77056-6169. But the parent has offices at 2100 McKinney Avenue, Suite 800, Dallas, TX 75201.

The uncleared area south of these properties and north of the CVS on Lake Houston Parkway is still owned by Pinehurst Trail Holdings LLC according to HCAD.

The holding company sold the two cleared parcels to Kingwood Residences last year.

From HCAD.

The uncleared property has an address on Kings River Commercial Drive immediately south of the cleared property.

From HCAD.org. Pinehurst property on right.

Close examination of the aerial photos above reveals that contractors appear to be installing drainage for Kings River Commercial Drive already. Could more shopping or offices be in the near future?

The minutes from Harris County MUD #151 last August show that Kingwood Residences HTX LLC requested a transfer of capacity from Pinehurst Trail Holdings LLC, in the amount of 139 equivalent single-family connections. The connections are for water and wastewater capacity.

This does not necessarily mean the apartments will have 139 units. An adjustment factor applies, hence the word “equivalent.”

Specific Plans Not Yet Obtained

It’s not clear from photos where the site’s stormwater detention basin will go. However, Harris County specifies a minimum detention rate of .65 acre feet per acre for sites this large. Check back often. As more information and plans become available, I will provide updates.

Posted by Bob Rehak on 5/21/22

1726 Days since Hurricane Harvey

The thoughts expressed in this post represent opinions on matters of public concern and safety. They are protected by the First Amendment of the US Constitution and the Anti-SLAPP Statute of the Great State of Texas.

Dredgers Reach Rogers Gully Mouth Bar

When last I reported on Lake Houston dredging, the focus of operations had shifted from the East Fork to Rogers Gully. However, the dredgers were still stationed hundreds of feet offshore. According to State Representative Dan Huberty, shallow water forced them to dredge their way into the Gully. (See below.)

Location of dredge on March 1, 2022. Mouth bars, like the one in the foreground are deposited where water slows down as it reaches the lake.

Compare Photos Taken Today

Now, 2.5 months later, the dredgers have reached the Rogers Gully mouth bar and have completed dredging most of it.

Looking east toward Lake Houston. Compare photo above.
Looking west toward the Walden Country Club, upper right.

Aerial photos taken this afternoon show that all but a small portion has already been removed. The operation could be completed in the next week or two, weather permitting.

Pontoons ferry the spoils to a converted marina across the lake now used as a temporary placement area. From there, trucks take the spoils to a fill-dirt company on FM1960 near SH99 east.

Before Dredging Began

To appreciate the progress, compare the photo below taken two years ago.

Rogers Gully Mouth Bar
Rogers Gully Mouth Bar on June 16, 2020 before dredging started.

Harris County Flood Control District had just finished dredging the area behind the cart bridge about a month before I took the shot above. But the City owns the part of the gully near the lake.

Where Next?

It’s not clear yet where the dredges will go next. They’re on a mission, with money that Huberty helped obtain from the legislature, to open up more ditches and streams that empty into Lake Houston. Blockages like the one at Rogers Gully can reduce the conveyance of streams. They create sediment dams that back water up. And that contributes to flooding homes and businesses behind them.

The City of Houston issued a request for proposals to create a long-range dredging plan for the lake. However, no plan has yet been published. News to follow when it becomes available.

Posted by Bob Rehak on 5/20/22

1725 Days since Hurricane Harvey

Wetlands Once Covered Area Where 138 Nesting Birds Were Slaughtered, Maimed

Last weekend, a contractor killed or maimed 138 nesting egrets and herons in the Cypress Towne Lake Area while clearing land. Little surprise the birds were nesting there. That area was once pockmarked with wetlands that are rapidly being developed.

Wetlands provide free stormwater retention. They also provide valuable habitat that supports a remarkable level of biodiversity. In terms of the number and variety of species supported, wetlands rival rainforests and coral reefs. Trouble is, they also provide cheap land for developers. That brings people into direct conflict with wildlife.

Great Egret preening on nest while waiting for eggs to hatch. File photo not taken in Cypress. Copyright © Bob Rehak 2022.

Nesting waterfowl make a pretty good biologic indicator of wetlands.

Property Rights vs. Right to Life and Right to Information

By law, it’s illegal to disturb migratory birds such as herons and egrets while they are nesting. But the contractors in question did not respect that law even though they could have waited a month or two.

Don’t get me wrong. I’m all for property rights. And I support responsible development. But that means finding balance. Balance sustains life. It also provides beauty that supports property values. Would you rather raise your kids in biological barrens? Or in close to nature in a place teeming with life?

Finally I believe in the right to information that helps people make informed decisions and markets self-regulate. For instance, if people fully knew the flood risk on a piece of property before buying it, that knowledge could reduce demand, perhaps moderate prices, and discourage future development of wetlands.

But sadly, flood potential is often the last thing buyers look at. At closing, they’re probably provided with a survey that shows they’re above the base-flood elevation (aka the 100-year or 1%-annual-chance floodplain). Then it’s “Where do I sign?” And, “When can I move in?”

That the home might have been built on wetlands is the farthest thing from their minds…until the foundation settles, the walls crack, and doors and windows start to stick.

Where to Learn about Property Built on Wetlands

But a little investigation with free apps or on public websites, might help buyers drive harder bargains that would pay for the foundation leveling they will probably need eventually.

From U.S. Fish and Wildlife Service National Wetlands Mapper. This shows the wetlands that used to exist in the area where the birds were killed and maimed.
1944 Aerial Photo of same area from Google Earth Pro. Cherrywood Bend Drive is where contractors were clearing land when they encountered the nesting egrets and herons.

Cypress Towne Lakes is a miracle of engineering that created livable space out of areas that once were wetlands. But the developer’s website shows only impressive homes and amenities, including a chain of lakes. It mentions none of the area’s natural history.

“You Can’t Outsmart Nature”

A wise banker once told me, “You can’t outsmart nature. Nature always wins. We need to give Mother Nature her room.” Perhaps that’s why his bank has almost a billion dollars in assets.

Posted by Bob Rehak on 5/19/22

1724 Days since Hurricane Harvey

The thoughts expressed in this post represent opinions on matters of public concern and safety. They are protected by the First Amendment of the US Constitution and the Anti-SLAPP Statute of the Great State of Texas.

Grand Parkway Extension Opens Tomorrow

According to an article in the Bluebonnet News, two new segments of the Grand Parkway (aka State Highway 99) will open Thursday, May 19. They will connect US 59 in New Caney to I-10 in Baytown. And they will invite development of thousands of acres in Harris, Chambers and Liberty Counties.

About the Grand Parkway

The new segments will add 52.8 miles to the largest loop around Houston. That will make the Grand Parkway the largest city loop in the United States.

According to the Bluebonnet article, TxDoT will offer a two-day grace period for tolls. Tolls will begin at midnight on Saturday, May 21.

The first segment of the Grand Parkway opened in 1994 in Fort Bend County. Almost 30 years and $855 million later, Houston will have another 184 miles of tollway.

Colony Ridge, upper right by Plum Grove, is approximately as large as Kingwood, yet is unincorporated. For scale, Lake Houston Wilderness park in center is 5,000 acres.
Expansion area on east side of Colony Ridge. Photo taken on March 3, 2021.
Photo taken on January 1, 2021, looking NW where Grand Parkway turns from N/S to E/W. Colony Ridge is in upper right of frame.

Changing Demographics and Politics of Liberty County

According to the 2020 census, the largest (incorporated) cities in Liberty County are:

  • Dayton at 8,777
  • Liberty at 8,279
  • Cleveland at 7,471

The Census Bureau shows the county’s entire population in 2020 as 91,628.

In anticipation of the Grand Parkway, Colony Ridge has already attracted tens of thousands of residents, many undocumented. It now is rumored to be the largest settlement in Liberty County. In fact, it has grown so quickly, that it forced Liberty County to redistrict its precincts.

Tracking Future Development and Offsetting Drainage Changes

To avoid the flooding that often attends new developments, existing residents must monitor new plats and construction closely. Here are some tips on how to do that.

The City of Houston hosts a website called Plat Tracker Plats. It shows development applications and their current status.

Screen capture from Houston Plat Tracker Plats as of 5/17/22. Clicking on highlighted areas will give you more information about the project. Check this site often.

Note the huge developments planned or in progress to the east and north of Lake Houston near the new Grand Parkway. All of this development will have an impact on drainage. If past developments are any guide, the new developments will likely increase both the volume and speed of runoff. This area is also dotted with wetlands, especially near rivers, streams and bayous.

To offset these factors, counties usually require developers to install detention ponds. You can request plans from city or county engineers’ offices. Check to make sure they include floodwater detention basins. Then watch construction to ensure developers comply with those plans.

Remember the motto “Retain your rain.” If everyone retained enough stormwater so that post-development runoff did not exceed pre-development runoff, then people downstream would not flood.

State of Grand Parkway construction in February 2022. Looking N across FM1960. The farmlands surrounding the Grand Parkway could soon become new developments.

So, hold developers and your local elected representatives accountable. You have one chance to get this right.

Posted by Bob Rehak on 5/17/22

1723 Days since Hurricane Harvey

The thoughts expressed in this post represent opinions on matters of public concern and safety. They are protected by the First Amendment of the US Constitution and the Anti-SLAPP Statute of the Great State of Texas.

Contractor Kills, Maims 138 Egrets, Herons While Clearing Land

Multiple Houston-based news outlets reported a story recently about a contractor that killed or maimed 138 egrets and herons protected under the Migratory Species Act. The birds were nesting on a site being cleared by the contractor.

It’s not clear from news coverage whether the contractor was working for a homebuilder or homeowner. While I have done dozens of stories over the years about the environmental impacts of land clearing, i.e., loss of wetlands and wildlife habitat, I can’t remember any this callous.

Summaries of Local News Coverage

KPRC Channel 2

Channel 2 reported that “An investigation has been launched after dozens of migratory birds were discovered injured or dead in an area being used as a breeding ground by the protected species.”

The incident occurred last Friday in the 19700 block of Cherrywood Bend Lane in the Town Lake neighborhood in Cypress. A tree trimming company cut down trees where the birds had built nests. The surviving birds suffered broken wings, mangled legs, and internal injuries.

Texas Parks and Wildlife said the property owner and tree trimming company will be held accountable. “Their fines could add up thousands of dollars, multiple Class C violations, plus the civil restitution,” said Texas Game Warden Jaime Hill.

Egrets and herons are migratory birds protected by state law, in addition to being federally protected under the Migratory Bird Treaty Act (MBTA). The MBTA protects 1,000 species. Under the MBTA, it is illegal to kill, injure, or capture protected birds.

Houston Chronicle

Houston Chronicle reported that 67 birds were discovered dead and another 71 were rescued by the SPCA’s Wildlife Center of Texas. The story said the non-profit had to euthanize 17 of the injured birds due to the extent their injuries.

A game warden cited the contractor and property owner for violating a statute which protects these non-game birds from being injured or killed, and their nests disturbed or destroyed.

“The issue here is the nests,” said Hill, the game warden. “Before nesting season begins residents can harass the birds so they don’t return.” They can use noise-making devices, fake owls, balloons with eyes on them and even pyrotechnics to try to ward them off, the warden added. “But any harassment must end when the first egg is laid,” she added.

“The birds might be a nuisance,” she said, “but at the end of the day when it comes to their nests and their young, they are protected.”

TPWD conferred with the US Fish and Wildlife Service and agreed to handle the incident at the state level.

KHOU Channel 11

KHOU 11 reported that “Several of the blue herons and great egrets were found alive inside trash bags that also contained dozens of dead birds.”

The Houston SPCA will care for the surviving birds until they can be released back to the wild.

TPWD’s investigation is ongoing.

Personal Commentary

Few waterbirds are more beautiful or graceful than herons and egrets. I have photographed them in the wild for years. My favorite shot is this one, taken years ago, not at the site in question.

I took it moments after the chick hatched out of its egg, as both parents looked on proudly.

Great Egrets and hatchling. I call this photo Proud Parents. © Bob Rehak 2022.

The chicks look gawky and gangly in their nests. As they mature and grow feathers, they walk out on branches and flap their wings to gain strength. Then one day, they release their grip on the branches and take wing to repeat the cycle of life as young adults.

It isn’t until you follow these birds from egg to air, that you can appreciate them as individuals. At moments like the one in the photo above, I see the same emotion that parents of every species feel. Love. Pride. And protectiveness.

But sadly, the egrets are no match for chain saws.

Posted by Bob Rehak on 5/17/22

1722 Days after Hurricane Harvey

Coastal Prairie Conservancy Plan Shows How Preservation Can Help Reduce Flooding

The Katy Prairie Conservancy (now the Coastal Prairie Conservancy) has preserved prairies for more than 25 years to slow down and reduce floodwaters.

Tall-grass prairies and wetlands soak up, store and slow runoff from heavy rains, all of which decrease flooding for residents downstream.

The three main dimensions of natural flood reduction.

But how does that work in practice in specific locations? How MUCH do nature-based initiatives reduce flooding? And how can they complement traditional engineered solutions?

Multifaceted Plan Could Hold Back Harvey’s Excess Floodwater

Working with the SSPEED Center at Rice University, the Conservancy produced this brochure. It outlines a plan to expand currently protected lands to 50,000 acres and restore 21,000 of those.

Source: Katy Prairie Conservancy and Rice University SSPEED Center

The plan would absorb, slow, and store water in the Upper Cypress Creek Watershed. It also recommends detaining water near Cypress Creek by creating shallow detention on private lands with the help of willing landowners.

Likewise, by constructing retention and detention ponds in the Upper Addicks Watershed, even more floodwater could be stored and slowed down. The plan also includes the creation of retention corridors along Bear and South Mayde creeks. The retention corridors would serve as a buffer for floodwaters that threaten communities along the creeks. These projects will store up to 110,000 acre-feet of floodwater.

That’s the equivalent of a foot of rain falling over 172 square miles! And that’s 10% of Harris County!

Expand Addicks Reservoir Storage through Excavation

Addicks and Barker Reservoirs are valuable assets that need to be restored and enhanced. Storing additional floodwaters in Addicks Reservoir can keep homes upstream safe and prevent extreme releases that destroy downstream properties, according to the Conservancy and SSPEED.

Addicks Reservoir on May 20, 2021. Looking NW.

Put all these solutions together and the results look like the bar graph above.

The recommendations could easily hold back more water than Addicks had to release during Harvey.

Benefits Extend to Multiple Watersheds

During Harvey, so much water accumulated in the Cypress Creek watershed that it overflowed into the Addicks watershed. So, these recommendations could help reduce flood risk in superstorms along multiple streams, including Buffalo Bayou and Cypress Creek.

Plan includes excavation of additional capacity within Addicks with a goal of enhancing natural environment.

Other Interesting Statistics

The brochure also cites interesting statistics from other groups that touch on the plan. For instance, the Natural Resources Defense Council estimates that every 1% increase in soil organic matter results in the soil holding an additional 20,000 gallons of water per acre.

No One Solution

After studying flood reduction for almost five years now, I’ve concluded there is no silver bullet. No one solution will work for all situations. But every little bit helps. Multifaceted recommendations like these can ultimately reduce costs and increase effectiveness by harnessing the power of nature.

Natural solutions also provide numerous other benefits such as recreation and wildlife habitat.

Posted by Bob Rehak on 5/16/2022

1721 Days since Hurricane Harvey

Royal Pines Goes Pineless

About a month after it began, the developers of Royal Pines have cleared a swath of trees about 1,000 feet wide and a half mile long.

Photos Taken 5/15/22

Looking NNE from southern end of Royal Pines. West Lake Houston Parkway on right. Photo 5/15/22.
Looking E from northern end of Royal Pines toward Triple PG Sand Mine. The trees between the foreground and mine will also be cleared. Photo 5/15/22.
Looking S. West Lake Houston Parkway in upper left. The large cleared area in the top right is Woodridge Village which flooded hundreds of homes in Elm Grove and North Kingwood Forest after it was clearcut and before the developer installed detention basins. Photo 5/15/22.

Clearing Started Before Permits Issued

Interesting that the clearing began before the permit was issued. See this post dated 4/24/22.
TCEQ Permit information. Clearing should be complete for the peak of hurricane season in September..

Plans Show 80+ Homes in Pre-Atlas 14 Floodplain

The following links will show you the general plan and layouts for the first three sections:

Note the dotted lines that snake their way through the top of the development. Those represent the 100- and 500-year floodplains.

Notice how a large part of the development is in “Zone X (Shaded).” That’s the area between the limits of the base flood (100-year or 1% annual chance) and the 0.2-percent-annual-chance (or 500-year) flood. I counted more than 80 homes in that zone. I also see six inside the 100-year zone.

Keep in mind that these flood zones are based on pre-Atlas 14 estimates. FEMA shows this area was last mapped in 2014. When FEMA approves new flood maps in the next few years, those zones will expand to take in more of the subdivision.

The subdivision at buildout will comprise more than the three sections. Houston Business Journal said Royal Pines will ultimately feature between 350 and 450 homes targeted at first-time home buyers.

Posted by Bob Rehak on 5/15/2022

1720 Days since Hurricane Harvey

The thoughts expressed in this post represent opinions on matters of public concern and safety. They are protected by the First Amendment of the US Constitution and the Anti-SLAPP Statute of the Great State of Texas.

How Would You Spend $750 Million on Flood Mitigation?

Harris County’s Community Services Department wants to know how you would spend $750 million? The U.S. Department of Housing and Urban Development (HUD) and the Texas General Land Office (GLO) allocated that amount to the County for flood mitigation in the wake of Harvey.

Flood Mitigation funds (MIT) go to projects that help communities reduce future flooding. They differ from Disaster Relief funds (DR). The latter help individuals recover from past floods.

GLO announced the $750 million allocation on March 18. HUD is NOT giving the money to Harris County outright. The County must first submit a plan of how and where it will use the money. Both HUD and GLO must approve that plan, called the Method of Distribution (MOD) before work can begin. Then, as vendors submit invoices, Harris County will submit them for reimbursement.

Notification of Planning Meeting For CDBG-MIT funding

Harris County wants your input on the plan. The Community Services Department will accept written and oral input regarding the use of funding and development of Harris County’s MOD at a planning meeting scheduled for:

Thursday, May 19, 2022

1:30 pm to 2:30 pm

Harris County Community Services Department (HCCSD) Office

9418 Jensen, Houston, Texas, 77093

Harris County will accept written input before May 30, 2022, 5:00 pm. via mail to Attn:  HCCSD Planning Section, 13105 Northwest Freeway Suite 400, Houston, Texas 77040 or by email to DRplancomments@csd.hctx.net.

To Request Special Accommodations at Meeting

Harris County will provide for reasonable accommodations for persons attending Harris County functions. Requests from persons needing special accommodations should be received by Harris County staff 48-hours prior to the function. The public hearing will be conducted in English and requests for language interpreters or other special communication needs should be made at least 72 hours prior to a function.

Please call 832-927-4700 or email DRplancomments@csd.hctx.net for assistance or additional information about this posting.

Restrictions on Use of Money

The funds represent an opportunity to mitigate disaster risks and reduce future losses in areas impacted by Harvey.

HUD defines mitigation as: “Those activities that increase resilience to disasters and reduce or eliminate the long-term risk of loss of life, injury, damage to and loss of property, and suffering and hardship, by lessening the impact of future disasters.”

Virtually all Harris County Flood Control District Bond Projects would qualify under that definition.

Eligible recipients include units of local government, special purpose districts, and port and river authorities.

The GLO encourages the prioritization of regional investments with regional impacts. Those include:

  • Projects that reduce risk from hurricanes, tropical storms and depressions, flooding, wind and other hazards
  • Disaster-resistant infrastructure
  • Upgrading water, sewer, solid waste, communications, energy, transportation, health and medical, and other public infrastructure
  • Multi-use infrastructure
  • Green or natural mitigation infrastructure.

Low-to-Moderate Income Requirement

At least fifty (50) percent of Harris County Mitigation MOD funds must benefit low-to-moderate income (LMI) persons.

Section 5.4.5.10 of Texas Action Plan Amendment 1

The table below shows the percentage of LMI Residents in each of Harris County’s 23 watersheds and the number of structures damaged in those watersheds by Harvey. Cross reference this information with the list of flood bond projects in making your recommendations for how to allocate the $750 million. And, of course, you don’t have to restrict yourself to flood bond projects.

Information obtained from Harris County Flood Control District Via FOIA Request.

Brittany Eck, GLO spokesperson, emphasized that the LMI requirement applies to “beneficiaries of a project.” She also said that GLO encouraged Harris County to look both upstream and downstream for beneficiaries. Not everybody in a watershed may benefit.

New Halls bayou detention pond
Just west of Keith Weiss Park along Halls Bayou, this new floodwater detention basin is taking shape. Detention basins, channel widening, and green infrastructure are all examples of types of projects the $750 million could help fund.

Pages 250-256 of the Action Plan contain the exact text of all requirements.

Time Limitation on Expenditure of Funds

No less than 50% of the $750,000,000 CDBG-MIT allocated to Harris County must be expended by January 12, 2027, with the full balance expended by January 12, 2032.

While this may sound like plenty of time, remember that today almost five years have passed since Harvey. And only 45 of 181 projects originally in the flood bond have begun construction. The rest are in still in feasibility surveys, engineering, or right-of-way acquisition.

All flood bond projects have already started and passed through one or more of those preliminary phases.

This Money Could Fully Fund the Bond Program

This $750 million, together with the Flood Resilience Trust approved last year by Commissioners Court last year, should be enough to fully fund every project in the bond program.

However, the County Administrator chose the Community Services Department (CSD) to recommend projects for the MOD. The thinking was that CSD was more in touch with the needs of LMI neighborhoods. Of course, CSD will consult with HCFCD on the final recommendations.

Posted by Bob Rehak on 5/14/2022

1719 Days since Hurricane Harvey

Save Date: Public Input Scheduled for Adlong Ditch Project on May 25

The Harris County Flood Control District (HCFCD) will hold a virtual Community Engagement Meeting for Adlong Ditch Conveyance Improvements on May 25. The purpose: to share project information and update residents on status of the project.

This project is in the Preliminary Engineering Report (PER) stage. PER objectives include delivering more detailed recommendations for flood damage reduction and an implementation strategy.


The Virtual Community Engagement Meeting will be held on: 
WEDNESDAY, MAY 25, 2022
6:30 – 7:30 p.m.
Join online at: PublicInput.com/Adlong
Or by phone* at 855-925-2801 with Meeting Code: 4964

2018 Bond Program funds will pay for this project. Community engagement is an important component of the Bond. And HCFCD invites your participation.

About the Meeting

The meeting will begin with a brief presentation to share project updates. A moderated Q&A session with Flood Control will follow. Residents may submit questions and comments before, during and after the meeting and throughout the public comment period. Any comments not addressed during the Q&A session will receive a response at the conclusion of the public comment period.  

Even if you can’t attend the virtual meeting, you can register to receive future project updates. HCFCD will post a recording of the meeting on the District’s website and YouTube after the event.

If you need accommodations because of a disability, please contact 346-286-4040 at least 48 hours prior to the meeting. For questions, please contact the Flood Control District at 346-286-4000, or fill out the comment form online at hcfcd.org/f-43.

*If you attend by phone only, maps and other exhibits will not be visible. However, you can find those after the meeting at hcfcd.org/f-43. 

Location of Ditch

Adlong Ditch runs north to south through a mostly rural area, east of Lake Houston between FM2100 and Cedar Bayou. The ditch runs from approximately Old Atascocita Road on the north to its confluence with Cedar Bayou east of Crosby.

Adlong Ditch starts near the center of the frame and runs toward the lower right. See Q128-00-00 where it crosses Highway 90.

Arkema Disaster Happened Near Adlong Ditch

A high-level executive of the flood control district described flooding in this area during Harvey. He said it was “a giant lake.”

The U.S. Chemical Hazards and Safety Investigation Board (CSB) said the flooding directly contributed to the disaster at the Arkema chemical plant, one block east of the ditch on Highway 90.

Adlong Ditch (left) flooded Arkema Chemical Plant (right) during Harvey, cutting off an evacuation route because of toxic fumes released.

According to the Board, Harvey disabled refrigeration systems at the Arkema plant in Crosby, where the company manufactures organic peroxides normally stored at -20 degrees F. As temperatures increased, the peroxides spontaneously combusted on August 31.

Arkema had a history of flooding, but never as bad as it did during Harvey. As a result, managers did not initially consider the plant’s safety systems at risk. But floodwaters at the plant during Harvey eventually reached 5 feet high – incredible for such a flat area.

Arkema Facility during Harvey. Rescuing part of the crew riding out the storm inside the plant.

The full report by the CSB details a series of catastrophic, bone-chilling miscalculations. It serves as a grim reminder of the power of floods and the need for preparation.

Residents within a 1.5 mile radius had to be evacuated. And because plant managers knew from experience that miles of surrounding roads would become impassable, they left a crew inside the plant to ride out the storm.

Not much later, 350,000 pounds of organic peroxide spontaneously combusted. Residents living within 1.5 miles of the plant had to evacuate and could not return home for a week. The incident endangered the lives of employees, first responders and neighbors. Highway 90, an evacuation route, had to be closed for days because of toxic fumes.

Cedar Bayou Flood Risk Reduction Study

Ironically, Harris County Flood Control District (HCFCD) had started a Cedar Bayou Flood Risk Reduction Study six months before Harvey as part of its Cedar Bayou Plan. This study investigated existing flood hazards and identified potential future drainage improvements to help mitigate flooding and flood damage.

Included in the study were the Cedar Bayou main stem (Q100-00-00) and 18 of its tributaries deemed as priorities, including Q128-00-00 (Adlong Ditch). 

Outline of Long-Term Solution for Adlong Ditch

The long-term proposed solution for Adlong Ditch includes:

  • A large regional stormwater detention basin (approximately 120 acres in size which would provide approximately 511 million gallons of storage volume
  • Widening and deepening the channel
  • Structure improvements to increase the capacity of existing bridges/culverts.

Short-Term Objectives

The short-term recommendations include:

  • Acquisition of right-of-way (ROW) for future improvements
  • Initial construction of the regional stormwater detention basin. 

Project Benefits

Implementation of the long-term proposed solution would be phased as funding becomes available. The project benefits include: 

  • More effective channel conveyance to contain future 100-year flows. 
  • Removal of inundation of up to 17 structures downstream of US 90 in the 100-year event.
  • Removal of inundation of approximately 1,169 acres and 4.5 miles of road in the 100-year event, 
  •  An estimated reduction of $1.1 million in damage

Posted by Bob Rehak on 5/13/2022

1718 Days since Hurricane Harvey


Exploration Green: Old Golf Course Turned into Innovative Flooding Solution

One of the more innovative flooding solutions in the Houston area can be found in Clear Lake. It’s called Exploration Green. Exploration Green is an old 178-acre golf course converted into a series of five large stormwater retention basins that also act as wetlands, wildlife habitat, and recreational amenities. Reforestation forms an extensive part of the plan as does water-quality enhancement.

Layout featured in masterplan shows integration with surrounding community, recreational amenities and reforestation.

Exploration Green demonstrates how “innovative green” approaches to flood prevention can amplify the value of traditional engineering. Islands in the ponds have attracted more than 150 species of birds.

Photo by Exploration Green

Stormwater Retention at Core of Plan

The master plan shows 38 acres of permanent water (wet bottom ponds) and 39 acres of wetlands. The slopes around the ponds create 1,680 acre feet of floodwater storage capacity. That’s enough to hold a foot of rain falling over 2.6 square miles. While the permanent water depth is six feet, the slopes around the ponds can safely hold water up to 13 feet.

Proposed typical cross section from master plan shows permanent pond surrounded by additional acreage for stormwater retention and recreational amenities.e

Stormwater runoff from the surrounding area (2,000 acres) flows directly to the site.

The project has proven so successful that FEMA prepared a case study on it. Exploration Green protects an estimated 16,000 homes in the immediate area.

The facility has prevented $300 million in flood damage to date and contributed to a $120 million increase in property values.

Alternative to Commercial Development

Local developers had expressed interest in turning the area into a massive commercial development. So, residents in the community – who didn’t like that idea – approached the Clear Lake City Water Authority (CLCWA) Board of Directors. 

Public input from town hall meetings helped guide a masterplan created by SWA Architects. The ideas included ADA accessible trails, native trees and grasses, benches, athletic fields and other amenities. Then engineers and hydrologists reviewed feasibility. Finally, voters approved bond funding to purchase the property.

The primary intent: floodwater detention. Secondary: to create a multi-purpose space that the entire community could enjoy. See the original masterplan document here.

CLCWA began purchasing the land in 2005. They divided construction into Phases 1A, 1B, 1C, 2, 3A, 3B, 4, and 5. Work could finish this year.

When complete, the facility will have 6 miles of 10-foot wide concrete trails connecting amenities with the local community.

CLCWA water rates fund maintenance of the park.

For More Information

Visit the Clear Lake City Water Authority website or the Exploration Green website. They also offer a brochure you can download.

The project has garnered an impressive list of awards.

It’s easy to access – between I-45 and the Johnson Space Center. See the map here.

Posted by Bob Rehak on 5/12/22

1717 Days since Hurricane Harvey