Bayou Land Conservancy Protects Another 966 Acres in Lake Creek Watershed

Bayou Land Conservancy (BLC) has announced a conservation easement on 966 acres of critical Lake Creek property in Montgomery County. The property is just northeast of Magnolia on Tranquility Ranch, which is owned by Nathan and Lindy Ingram. BLC started working with the Ingrams in 2015.

The conservation easement is across Lake Creek from the 7,000-acre Cook’s Branch preserve owned by the Cynthia & George Mitchell Foundation. The proximity of the two large properties will benefit wildlife by maintaining the “carrying capacity” of the land.

Lake Creek flows diagonally through this satellite image from Google Earth. Note how new developments are gobbling up the natural (green) area in the middle where the conservation easement is.

The 966 acres permanently preserved at Tranquility Ranch help meet BLC’s long-term conservation goals and contribute to the environmental health of the region.

The preserve will function as a wetland and stream mitigation bank, known as the West Montgomery Mitigation Bank. It has credits available to developers seeking to offset impacts in this rapidly growing area.

Wild area along Lake Creek where it flows through Tranquility Ranch.

Featuring a mix of hardwood and pine forest, Tranquility Ranch consists of over 400 acres of existing wetland habitat, 20 acres of streams & ponds, and 13,000 linear feet (2.5 miles) of stream frontage on Lake Creek.

In addition to high quality existing habitat, over 90 acres of wetlands and 300 acres of flooded forests will be improved and restored on the land.

Bottomland hardwoods provide habitat for wildlife.

The 966-acre preserve is part of a larger 1200-acre property that hosts a special event venue called The Wyldes at Tranquility Ranch. It hosts retreats, weddings, and other events.

Benefits to People and Wildlife

Jill Boullion, Executive Director of Bayou Land Conservancy, said, “This conservation agreement makes a significant stride towards BLC’s conservation goals to preserve land in the Lake Houston watershed.”

“We’re grateful to landowner Nathan Ingram and his care and protection of this special place,” said Boullion.

“This land will provide positive impacts in the region for generations to come.”

Jill Boullion, Exec. Director, BLC

Preservation of Tranquility Ranch will provide many community benefits. They include flood control, water-quality improvements for drinking water and recreation, and wildlife habitat. The preserve also is an important nesting, wintering, and migratory stop-over site for many bird species, including owls, raptors, and songbirds.

Importance of Lake Creek Preservation to Downstream Flood Protection

Leaving natural areas natural won’t reduce flooding per se. But it will keep flooding from getting worse.

It will also reduce flood damage by ensuring generous setbacks from areas that flood.

Wetlands are nature’s sponges. They retain runoff that might otherwise quickly add to flood peaks downstream. They also clean water.

Bayou City Waterkeeper ranks the wetlands along Lake Creek as one of the five most critical wetland areas in the Houston Region.

For those who may not know where Lake Creek is, it enters the San Jacinto West Fork just south of Conroe, about 9 miles south of the Lake Conroe Dam. See the big green area in the upper left.

watershed map of the San Jacinto
Watershed map courtesy of San Jacinto Regional Water Authority.

From this map, we can see that rainfall from seven watersheds flows under the US59 bridge. Comparing peak flow data from them during the January 2024 flood, we can see that Lake Creek had the highest discharge rate. See below. USGS graphs are arranged in order from highest to lowest, except for the last, which reflects rain falling in all seven watersheds.

Lake Creek peaked at 20,800 cubic feet per second (CFS)
Lake Conroe peaked at 19,100 CFS.
Spring Creek peaked at 9,810 CFS.
Cypress Creek peaked at 6,580 CFS.
Willow Creek peaked at 842 CFS.
Little Cypress peaked at 780 CFS.

All of the streams above flow under the US59 bridge.

USGS registered a peak of 40,400 cubic feet per second at the 59 Bridge.

Note: the first six peaks do not total up to the last because streams peaked at different times.

Of course, these numbers partially reflect uneven rainfall distribution during the January event. And rainfall totals in the Lake Creek watershed were among the highest in the area.

The discharge rates above also reflect watershed size. According to Table 2 in the San Jacinto Regional Watershed Master Drainage Plan:

  • Spring Creek drains 392 sq. mi.
  • Lake Creek drains 330 sq. mi.
  • Cypress Creek drains 266 square miles (sq. mi.)
  • Little Cypress drains 52 sq. mi.
  • Willow drains 52 sq. mi.

Looking solely at watershed size shows that even if the rainfall distribution had been uniform, Lake Creek would have contributed a major percentage of the overall flow.

And that – in a sentence – is why Lake Houston Area residents should care about conservation along Lake Creek, especially considering that the watershed is developing so quickly!

Conservation Easement Will Protect Land in Perpetuity

BLC conducted an extensive audit of natural resources including wetlands and wildlife on the Ingram property before the conservation agreement was put in place. No matter who the owner is, the easement will run with the land and protect the land in perpetuity. The audit will provide a baseline for future comparison.

Ingram reportedly had offers to buy the land from sand miners and developers but chose to conserve it instead. Said Boullion, “I commend him because obviously it’s not cheap to own and hold that much land in a natural state. So, he looked for a way to monetize his property while conserving the land and benefiting the community. He is one of the most conservation-minded people I know.”

The conservation easement held by BLC will let Ingram sell wetland-mitigation credits through the West Montgomery Mitigation Bank. He will sell them to developers who have no other choice but to disturb wetlands while developing the rest of their property.

For more about how the wetland credits work in Texas, see this page from Texas A&M.

The Army Corps controls and permits the process. But non-profit groups, such as the Bayou Land Conservancy, play a major role in it.

About Bayou Land Conservancy

BLC is one of the leading conservation groups in the Houston region. It preserves land along streams for flood control, clean water, and wildlife. BLC is a nationally accredited, community-sponsored land preservation organization working to permanently protect land, with a focus on the streams that feed Lake Houston, an important source of drinking water for millions of people.

Posted by Bob Rehak on 2/25/24

2361 Days since Hurricane Harvey

January 2024 Weather Much Cooler, Wetter than Normal in Houston Area

According to Dr. Mark Wentzel, a hydrologist in the Surface Water Division at the Texas Water Development Board (TWDB), January 2024 weather was much cooler and wetter than normal in the Houston area, but the same was not true across the state.

Wentzel issues monthly reports that summarize weather, rainfall (or lack thereof), and water supplies across Texas. His latest report, issued today, covers conditions from the end of December 2023 to the end of January 2024.

Key Stats

According to Wentzel, January was cooler than normal for most of Texas and wetter than normal for about half the state.

At the end of January, 23 percent of the state was in drought, down 16 percentage points since the end of December and the lowest percentage since June 2023.

Statewide, storage in our water supply reservoirs is about 73 percent of capacity, up almost four percentage points since the end of December, but still almost 10 percentage points below normal for the time of year.

Wentzel expects conditions to continue improving over the next few months. But he also says, we have a long way to go to be drought-free statewide.

Summary of key points for Jan. ’24, from TWDB video by Dr. Mark Wentzel

Houston Area Was 2 to 4 Degrees F Cooler, 150-300% Wetter Than Normal

Wentzel provided these two maps from NOAA. They show temperature and precipitation variations statewide relative to what is considered normal for January.

Source: TWDB

From a water supply perspective, reds, oranges, and yellows mean trouble on both maps. The Houston area was 2 to 4 degrees F cooler than normal and 150% to 300% wetter. However, parts of West Texas were above normal for temperature and below normal for precipitation – the opposite of SE Texas.

Overall, January temperatures were well below normal for most of the state. In fact…

January 2024 was the coldest January for Texas since 2007 and the second coldest since 1988.

Dr. Mark Wentzel, Hydrologist TWDB

Precipitation in January was above average for about half the state.

Overall, we had the wettest January since 2007 and the 10th wettest since 1895.

Dr. Mark Wentzel, Hydrologist TWDB

Even so, all of West Texas and parts of the Panhandle, Central Texas, and the lower Rio Grande Valley were drier than normal.

Drought Becomes Less Severe

Cooler and wetter conditions than average for large areas of the state led to improved drought conditions in the last month.

From US Drought Monitor

This Drought Monitor map shows conditions as of January 30. Twenty-three percent of the state is in drought with the tan, orange, and red colors, down 16 percentage points from the end of December.

That’s the smallest percentage of the state impacted by drought since June 2023 and the fourth consecutive month that drought has decreased.

Water Supply Up, But Still Below Normal

January also brought welcome relief to some of Texas’ water supply reservoirs. During the month of January, statewide supplies increased by almost four percentage points, the largest increase in a single month since October 2018.

Most of that increase came in the northeast quarter of the state, where most reservoirs are now back to normal for this time of year.

However, statewide, supplies are about 10 percentage points below normal for the time of year. And conditions are much worse in the south and west.

Drought Forecast Through End of April

What can we expect over the next few months? Here’s the latest seasonal drought outlook from the National Weather Service for conditions through the end of April.

NOAA’s drought predictions for entire country

El Niño conditions, warmer-than-average sea surface temperatures in the eastern Equatorial Pacific, are in place and expected to moderate temperatures. They will also add moisture to Texas for the rest of the winter.

Unfortunately, improvements aren’t expected to be enough to reduce drought in West Texas or eliminate drought in Central and East Texas.

Looking a little farther out, May and June are typically two of the wettest months for Texas, regardless of El Niño status, giving us a chance for additional improvements before the full onset of summer, says Wentzel

Posted by Bob Rehak on 2/14/24 based on information from Dr. Mark Wentzel – Hydrologist, TWDB

2360 Days since Hurricane Harvey

Meritage Begins Clearing 40 Acres for 210 Homes, Many Over Wetlands

Meritage Homes of Texas LLC, a company based in Scottsdale, Arizona, has begun clearing 40.2 acres between Kings River and Pinehurst of Atascocita. The company will reportedly build 210 homes there – 5.2 per acre. Although the new development is far above floodplains, wetlands cover a large part of the first phase.

Two Phases of Development

Meritage told homeowners in the area that it plans to develop the land in two phases, with the second still several years away.

The two parcels bracket Pinehurst Trail Drive. The first stretches along Kings Park Way almost to West Lake Houston Parkway (WLHP) on the west. The second stretches to the Atascocita Golf Club on the east. (See satellite image below.)

Locations of Phases I and II.

Land Not in Floodplain, But Contains Wetlands

According to FEMA, the land sits outside known floodplains. That’s good news.

Phases I and II circled in red. From FEMA’s National Flood Hazard Layer Viewer. Cross-hatched area = floodway. Aqua = 100-year floodplain. Tan = 500-year floodplain.

However, according to USGS, portions of the property contain wetlands. That’s not good news. Homes developed over wetlands often experience a variety of problems, such as shifting foundations, doors that stick, and cracked pavement.

From the National Wetlands Inventory.

The presence of wetlands (and a gas pipeline) may indicate why this property was not developed until now.

The definition of “jurisdictional wetlands” has flip-flopped in recent years as one administration after another has tweaked the definition of “waters of the U.S.” (WOTUS). Currently, we’re dealing with Biden’s changes to Trump’s changes to Obama’s changes. It’s not simple.

The definition stretches more than 100 pages and determines what the Army Corps protects.

It’s not clear at this time whether the Army Corps has ruled whether these particular wetlands fall under their jurisdiction.

Western Parcel Being Cleared First

Photographs taken on Feb. 13, 2024, show that contractors have already cleared a significant portion of the first phase, which is on the west. See images below.

Looking ENE toward Lake Houston. This shot shows the first part of clearing adjacent to Texas Laurel Trail and Pinehurst Trail Drive. Wetlands cut through this area.
Reverse angle shows full extent of clearing as of Tuesday morning, 2/13/24. Looking W toward CVS (out of sight in background) along WLHP.

Note the small channel that appears to be draining the wetland area. According to the schematic diagram below, homes, driveways and roads will eventually cover this channel and the area it drains.

Layout of Homes and Detention Basins

Plans indicate the area will have 124 30×80 foot lots and 86 40×80 lots. That’s fairly high density. And it will have a high percentage of impervious cover that generates a lot of runoff quickly. Luckily, the development will have four stormwater detention basins, according to the diagram below posted on Facebook.

Harris County regulations specify a minimum requirement of .65 acre-feet of stormwater detention per acre for developments of this size. It’s not clear at this time whether the development will exceed the minimum requirement.

Tree Buffer

A resident indicated that a deed to the property requires Meritage to maintain a buffer of at least 25-30 feet of wooded land along the property boundary. That should help retain/restrain runoff, too. See photo below.

So far, contractors seem to be leaving the required setback.

Construction Plans and Drainage Analysis to Follow

According to residents, Meritage just closed on the property in January. Given the recent sale, I do not yet have full construction plans or a drainage impact analysis. However, I have submitted a FOIA Request to Harris County Engineering and will provide them when I get them.

When I photographed the clearing activity this morning, it had silt fence around most of the perimeter (an improvement from last Sunday).

The silt fence is also an improvement over a neighboring development on WLHP by Trammell Crow.

Neighboring Development Still in Quagmire.

Harris County Engineering and Constables shut down construction at the Trammell Crow site after it flooded Kings Park Way, WLHP, and neighboring properties during heavy rains in late January.

This morning, I noticed that contractors are back at work behind tall privacy fences. However, they still lack silt fences along large parts of their property. Moreover, trenches that they dug to drain the property to a sediment pond had been blocked off to accommodate construction equipment. See below.

Trammell Crow contractors were busy this morning piling dirt over the knee-deep muck on their site from heavy rains two weeks ago.

Stormwater is the enemy of construction. That’s why most contractors implement measures to control it upfront in a project, not after the fact. Let’s pray that Meritage’s contractors protect their neighbors better.

Posted by Bob Rehak on 2/13/24

2359 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.

ASFPM Catalogs, Explains Flood-Mitigation Strategies: A Review

The Association of State Flood Plain Managers has an excellent, educational website called FloodRiskReduction.org. In a few pages, it explains floodplains, sources of flooding and how to understand flood risk. It also breaks down 39 flood-mitigation strategies for property owners, buyers, renters, community associations, officials, representatives, and others.

Part of the site’s magic is a search feature that helps readers zero in on strategies that might help them. It lets users filter strategies by factors such as cost, effort required, maintenance, type of real estate, foundation type, condition of structure and more. The strategies cover everything from DIY projects to those that require professionals.

Finally, the site comes with a list of resources to help implement the strategies.

Organized for Action

I love the organization of this site. Everything about it is designed to help people take action to protect themselves and their property.

“Flood risk is not static. It changes constantly due to development, erosion, land use changes, subsidence of the land, changes in rainfall patterns, sea level rise, and other factors.”

FloodRiskReduction.org

Focused on Mitigating Effects, Not Causes

Whereas ReduceFlooding.com gives concrete examples of how such factors interact in a small area so we can mitigate the causes, FloodRiskReduction.org skips to mitigating their effects.

It focuses mainly on telling people how to protect themselves and their property from rising floodwaters. In that sense, it’s a fundamentally different, but complimentary approach.

Wide Range of Strategies

The strategies range from home elevation to waterproofing, building relocation, grading and more. Much more. There’s even a section on demolishing a structure and rebuilding it outside of the floodplain and harm’s way.

Not for the faint of heart. Home of man who elevated his home by himself to get it above neighborhood flooding.

My favorite, however, is “Flood-free site selection.” It talks about identifying flood hazards and their frequency as part of the home buying and/or homebuilding process. It focuses on avoidance as a form of mitigation.

Each of the strategies comes with a series of concrete steps you can take to reduce your flood risk.

For instance, “flood-free site selection” includes discussions of how to:

  • Review FEMA flood maps
  • Review nearby flood-protection structures such as dams
  • Examine historical records
  • Seek advice from local experts, such as floodplain managers.

Compare Options for Exploration

As you might expect from the photo above of a man who elevated his home by himself using a series of car jacks, ASFPM’s site comes with a long list of cautions and disclaimers.

Regardless, FloodRiskReduction can help educate people about their options in an afternoon. It’s a quick, simple list of thought-starters and a great way to compare options to explore.

For ease of future reference, I will post a link to the ASFPM site in the links page of ReduceFlooding.com.

Posted by Bob Rehak on 2/12/24

2358 Days since Hurricane Harvey

Entergy in City’s Crosshairs, Northpark Lane Closures Announced

The Lake Houston Redevelopment Authority/TIRZ 10 (LHRA/TIRZ) Board Meeting on Thursday, Feb. 8, 2024, focused almost exclusively on issues that have delayed the Northpark expansion project. LHRA/TIRZ also announced lane closures beginning Feb. 19, 2024.

One Source of Hold Ups Resolved, Another Remains

The Northpark expansion project is designed to move more traffic faster and to create an all-weather evacuation route for 78,000 Kingwood residents in the event of another major flood, such as Hurricane Harvey.

Two major hold ups have been:

  • Reaching right-of-way agreements with Union Pacific Railroad (UP)
  • Getting utilities, such as CenterPoint and Entergy, to move gas and electric lines.

As of this week, all railroad agreements have been resolved.

Approval of the agreements by the Houston City Council should be a formality.

And CenterPoint should complete the relocation of their gas lines within a week or two.

However, Entergy has not even started relocating its equipment. They were given notice four years ago to do so.

The board discussed the possibility of condemning an existing Entergy easement within the limits of Northpark Drive right of way, but ultimately decided to defer action for one more month. The outcome is inevitable. Entergy must move its equipment. But members hope to avoid the expense and delays of litigation involved in a condemnation proceeding.

It is unclear what Entergy hopes to gain through delays. In the meantime, it is jeopardizing its public image in the most densely populated part of its Texas service area.

Entergy Must Resolve Three Problems

Entergy has:

  • Utility poles it must move out of the City’s right of way.
  • A transformer next to the Exxon station at US59 on LHRA/TIRZ property.
  • Underground electricity lines that would be paved over in several places.

The existing wood poles between 494 and the Kingwood Diversion Ditch are in the City’s right-of-way. Entergy has sought reimbursement to move those, however, they are on City property and not entitled to reimbursement.

The transformer next to the Exxon station now sits on property purchased from Exxon by the LHRA/TIRZ.

Entergy wants 52 weeks and more than a million dollars to move this transformer in the Exxon parking lot at US59 and Northpark Drive.

Regarding the third item, utilities commonly run electricity lines under streets in urban environments. But Entergy apparently does not want that in this case and has not made arrangements to move the lines.

To resolve such conflicts, LHRA agreed to pay Entergy $711,000 in July last year. But then a consultant for Entergy demanded $1.462 million – doubling the costs. LHRA balked. The extra money wasn’t and isn’t in the budget. Neither were the cost increases itemized. Said another way, Entergy didn’t break down what caused the price increases.

Itemized Costs Being Demanded

To make sure Entergy is not folding in un-reimbursable costs such as relocating poles in rights of way with allowable relocation costs for the transformer, Ralph De Leon, project manager for LHRA, said he has requested itemized costs and a schedule of values for each part of the job from Entergy.

A schedule of values includes such things as material costs as well as labor costs. For instance, one line item might read, “X people at $Y/hr times Z hours.” He also wants to see that schedule signed and stamped by a licensed PE, whose license could be revoked for falsifying information.

Entergy First Notified in 2020

The LHRA Board reviewed a history of attempts to resolve the Entergy conflict issues. They included 22 meetings/discussions between October 2020 and January 2024.

  • October 2020: Began coordinating utility impacts with Entergy and other utility companies (at 60% design stage).  Held COH utility coordination meeting.
  • December 2020: Entergy reached out and asked if there were opportunities for relocation reimbursement.  Held COH utility coordination meeting.
  • January 2021: Held COH utility coordination meeting.
  • February 2021: Held COH utility coordination meeting.
  • March 2021: Held COH utility coordination meeting.
  • June 2021: Began discussions regarding the ground transformer near Exxon gas station.  M&S had preliminary plans prepared.
  • February 2022: Held COH utility coordination meeting.
  • March 2022: Held COH utility coordination meeting.
  • April 2022: Held COH utility coordination meeting.
  • July 2022: M&S determined that their preliminary plans were incorrect and had assumed overhead line relocations for crossing over Northpark Drive.
  • August 2022: M&S noted that their utilities were in an easement and would require reimbursement from LHRA.
  • September 2022: Additional correspondence regarding reimbursement for relocations.  Teams meeting with M&S to discuss relocations.
  • October 21, 2022: M&S provided a draft cost estimate via email.  Total estimated costs for the relocations were $1,218,000.
  • January 2023: Field meeting with M&S, AT&T and Exxon representative to discuss relocations on Exxon property. M&S provided easement documentation for their utilities and continued discussion about reimbursement.  Wade Carpenter (Entergy attorney) began involvement in the conversations.
  • February 2023: Entergy attorneys reviewing the matter internally.
  • March 3, 2023: M&S noted that utility relocations in easement (primarily west of Loop 494) would cost $710,000 and would be seeking reimbursements for these relocations.  For utility relocations east of Loop 494, those would cost approx. $500,000 and Entergy deemed these costs as non-reimbursable as they are not in easement.
  • May 17, 2023: M&S confirmed that relocation costs west or Loop 494 are reimbursable ($710,000) and relocation costs east of Loop 494 ($500,00) are non-reimbursable.
  • July 19, 2023: M&S provided draft agreement for relocations with relocation costs shown to be $711,186.26.
  • August 2023: Coordination with M&S on timeline of relocations.
  • October 2023: M&S noted that they are waiting for the go ahead to send plans to construction group.
  • December 2023: Coordination with M&S regarding fiber companies attached to their poles.  M&S provided an update relocation cost estimate with a new total being $1,462,135.57.
  • January 2024: Coordination with M&S on timeline of relocations.

M&S is an Entergy consultant.

30-Day Deadline Given on Feb. 6, 2024

On February 6, 2024, Carol Haddock, Director of Houston Public Works, sent Entergy a letter giving the company 30-days to move its property. The letter included a request to submit a timeline for the relocations by Feb. 16.

Haddock’s letter parallels one sent by LHRA/TIRZ10 on Nov. 9, 2020, which the City says suffices as proper legal notification. That’s because the LHRA/TIRZ10 is acting as an agent of the City.

The City’s position is that Entergy is not moving into the City’s footprint. But the city is getting bigger and expanding into Entergy’s footprint. It appears that the City has the upper hand at the moment.

Impact of Delays

De Leon believes the City’s letter will resolve enough issues to keep crews busy for now. Next up:

  • Continuing excavation of two stormwater detention ponds at US59 and Northpark
  • Placement of box culverts in the middle ditch
  • Creation of some temporary lanes on the north side of Northpark.

However, he admits that the Entergy delays have caused problems. Instead of following the optimal critical path, his contractors are hopscotching around to keep crews busy.

If Entergy continues to delay, he could face contractual penalties, including costly demobilization.

Lane Closure Announced

LHRA/TIRZ posted this announcement on its project website. It affects westbound traffic.

“Beginning February 19th, Lake Houston Redevelopment Authority’s (LHRA’s) contractor, Harper Brothers Construction will be closing the right two lanes of westbound traffic near the Northpark/I-69 intersection.  The first month of this closure will leave two westbound lanes open – the existing left turn lane and one through lane.  The next 3 months of the closure will switch traffic onto the newly constructed lanes while construction of the existing left turn lane and through lane are completed. Westbound traffic should expect delays and alternative routes are encouraged.  For this phase of work the contractor will be installing new storm sewer pipes and inlets along with new concrete roadway.”

Two westbound lane closures beginning Feb. 19 circled in red.

For More Information

For more information about the project including construction plans, visit the project pages of the LHRA/Tirz 10 website. Or see these posts on ReduceFlooding:

Posted by Bob Rehak on 2/10/2024

2356 Days since Hurricane Harvey

Sand Mine Leaks Upstream from Blocked Drainage Ditch

Just upstream from the blocked drainage ditch at Northpark Drive and the San Jacinto West Fork, Hallett Materials operates the biggest sand mine between I-69 and I-45. The mine complex sprawls across several square miles and has several leaks. During the last flood in January, those leaks likely contributed to sedimentation in the West Fork and a blocked drainage ditch immediately downriver from the mine.

Blocked Northpark Ditch at West Fork
Contrary to a popular narrative among miners, this sand did not come from Spring Creek. That’s another watershed. Picture taken on 2/5/2024. The Hallett Mine is to the left (upstream) of the channel.
This picture of the blockage above shows the height of the sand relative to the top of the banks. Courtesy of a resident who prefers to remain anonymous.

Location of Mine Relative to Blockage

In late January, the West Fork experienced an estimated five-year flood after several days of nearly constant rains. Waking up after the flood was like a bad hangover. The blocked ditch above was just one of the problems. It is immediately downstream from the giant Hallett mine. See below.

Landsat image from Google Earth. Arrow shows direction of river’s flow. Circle shows location of blockage. Numbers show approximate location of leaks listed below.

Mine Leaks in Multiple Places

Let’s take a closer look at each of those three areas.

  1. One pond was wide open to the river through a large gap in its dike. The gap appears to have remained open since at least July 2023 and enlarged.
  2. A pipe was expelling water from a second pond straight into the river.
  3. A bulldozer appeared to have helped a third pond overflow across a road. Wastewater from the settling pond then flowed through woods and neighboring properties on its way to the river.

Pictures Taken on Feb. 8, 2024

Leak #1

Notice the huge gap in the dike of the pond in the center of the image below. Also notice that pond’s elevation compared to the one on the right.

The dike breach (center of image) first showed up in Google Earth in July 2023. It now appears considerably larger, indicating severe erosion from the recent flood.

The drought last summer and fall certainly didn’t cause the breach to enlarge.

Historical images in Google Earth show that this pond frequently breaches its dikes in different places. Something’s going through there!

Leak #2

A little farther downstream on the west side of the river, a pipe drains another Hallet pond directly into the river.

I photographed Hallett piping water into the river at this same location in 2020.
Leak #3:

Haven’t seen this before! On the east side of the river, in the woods next to Hallett’s main settling pond, a bulldozer apparently created a path for water to escape across a maintenance road. Water then flowed through woods 600-feet wide and onto neighboring properties before entering the river just above the blocked channel. See the series of images below.

Notice bulldozer tracks to left of perimeter road and wet area on road in the middle of the frame.

Flying closer, you can see that the bulldozer had pushed dirt from the road into the pond (see below, right side of frame).

Silty wastewater then escaped from the pond into the woods on the left.
The silty wastewater then migrated south (top of frame) through the woods.
Along the way, it invaded neighboring properties.
Then it drained back across the access road and into an abandoned mine (top of frame).

Hanover Estates now owns that abandoned mine. In the photo above, note the open path to the river in the upper right. It’s shown below in more detail.

Closer shot of wastewater exiting Hanover pond through another breach that leads straight to blockage (circled in red in the distance).

Apportioning the Relative Contribution of Different Sources

The Hallett mine owner told me that sand can’t escape his pits. I remain skeptical.

To be fair, some of the sediment in the channel blockage likely came from river-bank erosion and sand bars upstream.

Also, a new development called Northpark South, now in the clearing stage, likely also contributed to the blockage. Silty stormwater flows unchecked from it into a second abandoned mine (also owned by Hanover Estates) and then into the blocked drainage ditch.

Northpark South, which drains into Northpark ditch is being built over wetlands.
Northpark South photo from January 24, 2024, looking south toward abandoned mine, blocked ditch and river in distance.

No one can say that Hallett and Northpark South contributed all of the material in the blockage. But it would be hard to pretend that none of it came from them.

The mine is still leaking two weeks after the flood!

And even before the flood, a giant ravine was sending stormwater from Northpark South into the second abandoned mine on the south side of the ditch.

ravine at Northpark South
Northpark South on December 28, 2023 before flood. Note ravine caused by erosion.

That mine drains into the blocked channel directly above the blockage. (See very first shot in this post.)

The SJRA, which is investigating sedimentation in the river basin, relies on a sediment gauge at I-45 – upstream from the mines and most of the new developments along the river. So they can’t really help sort out this issue.

The Calm After the Storm

Now that the immediate danger has passed, we need to investigate the contribution of mining and floodplain development to sedimentation.

When rivers and ditches fill up with sludge, it reduces conveyance.

Then, when the next flood comes, instead of water staying within the riverbanks, it may back up or overflow into living rooms.

The greatest area of deposition will normally be where floodwater slows down as it reaches a standing body of water like Lake Houston. We’ve seen what that led to.

Corporate waste-disposal practices are matters of public safety and concern. We need to examine them more closely.

If Hallett and/or the Northpark South developer wish to respond to this editorial, I will be happy to post their points of view.

Posted by Bob Rehak on 2/9/24

2355 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.

Another RV Resort Coming Near North End of Woodland Hills Drive

Yet another “RV Resort” is coming to the Kingwood/Porter area. This one will be at the north end of Woodland Hills Drive about a block north of Kingwood Park High School. Plans show parking for 43 RVs on the 4.4 acre property.

The Porter Strong RV Resort, which contains a recreation building, dumpsters, and concrete driveways, will back up to homes along Birchwood Springs Avenue in Woodridge Forest.

The drainage calculations look impressive…until you consider the way they estimated impervious cover.

Location map from construction plans obtained via a FOIA Request to MoCo Engineering. Note: High School is mislabeled. Should say, “Kingwood Park High School.”

Access from Porter For Now

Access to the RV resort – at least for now – will be via Needham Road and Collette Lane in Porter. However, plans show a dotted line for an extension of Woodland Hills Drive, which currently stops approximately 300 feet short of the development. It’s not immediately clear whether Montgomery County or the developer plans to extend Woodland Hills north at this time.

Drainage and Detention Plans

For the full construction and drainage plans, click here.

Drainage in this area flows south to Bens Branch. Note in the layout above that two 7-foot-deep, dry-bottom, stormwater-detention basins flanked by drainage swales will help intercept stormwater flowing south before it reaches adjoining properties.

FEMA shows no floodplains in the area and USGS shows no wetlands on the site.

The detention basins for the 4.4 acre site will hold 4.4 acre feet of stormwater before they start to overflow. That exceeds Harris County Flood Control District’s minimum recommendation for areas flowing into Harris County.

Moreover, the engineer claims the site only requires 3.4 acre feet in a 100-year storm. That calculation is based on Atlas-14 requirements adopted by Montgomery County.

The engineer indicates that the maximum discharge rate for the ponds, which will be pumped, is about 8 cubic feet per second less than the natural runoff rate for the site. So for everything up to the 100-year storm, runoff going into Bens Branch from this area should be reduced.

All that is good news. Now for the bad news.

The engineer seems to have based all those calculations on 29% impervious cover.

That seems unlikely for this type of project. The number of parking spots per acre is roughly equivalent to the Laurel Springs RV resort which claimed to have 66% impervious cover, but likely has much higher.

Best practices require excluding detention basins from impervious cover calculations. A quick glance at the construction diagram above suggests that concrete will cover much more than a third of the remaining property.

Also, the engineer says it will take 48 hours to drain the ponds after a 100-year rain. The ponds do not appear to empty by gravity, however. They will require pumps, which could present problems in a power outage. Such outages frequently occur in storms strong enough to create floods.

Pictures Taken on 2/1/24 Show Extent of Construction

Currently, the site is being cleared. Construction has not yet started. I took the shots below on 2/1/24. They show the extent of clearing as of last week.

Looking SW at construction site. Woodland Hills and Kingwood Park HS on left. Northpark Rec Area top center. Homes are in Woodridge Forest.

Looking W toward Woodridge Middle School at top of frame.
Reverse Angle. Looking E toward Woodridge Village. Surrounding areas already include a number of mobil homes and RVs.

Bens Branch Getting Crowded

I hope contractors build what the plans indicate. Bens Branch has enough flooding problems of its own. The Kingwood Area Drainage Analysis showed that parts of the stream could flood in a two-year rain.

Since that study, several high-density developments have been built nearby in the watershed. They include The Preserve at Woodridge, which apparently understated the amount of impervious cover, and Brooklyn Trails, which was grandfathered under pre-Atlas-14 requirements.

And then there’s the Northpark Drive Expansion Project, which is seeking more room for another detention basin to mitigate its own increases in impervious cover.

For now, the best thing to do is remain vigilant.

Posted by Bob Rehak on Feb. 7, 2024

2353 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.

River Wakes Up From Flood With Bad Hangover

After January’s five-day hydro-fest, Houston area rivers, streams and ditches look like they woke up with a bad hangover. Some areas are hiding under broad blankets of sand. The root balls of uprooted trees jutted up from the San Jacinto riverbed like tank traps on a battlefield, a testament to how shallow the river has become once again. And sand, in at least one case, has totally blocked off a drainage ditch.

Photos at US59 Bridge over San Jacinto West Fork

Kingwood-area resident Robin Seydewitz took the three images and video at the US59 Bridge this morning (2/5/24).

Newly deposited sand.
y20-second YouTube video by Robin Seydewitz, panning west to east under bridge. Shows debris build-up.

Sediment Build Up Alarming

The January flood was not as bad as Harvey. This was a much smaller flood – the type that happens far more frequently – like every 2 to 5 years depending on where you live.

The danger is not so much what this flood deposited, but what similar floods can deposit over time and how they can reduce the conveyance of rivers, streams and ditches. All the accretions add up like hairballs in your shower drain.

Here’s how one minor storm totally blocked a ditch after one storm.

Northpark ditch blocked by sand/sediment after January flood. Pictures taken before the storm last November show it flowing freely. Taken 2/5/24.

Upstream of this blockage along the ditch, the Northpark South development, built on wetlands, is dumping its drainage into the abandoned sand mine on the right.

The 5-square mile Hallett sand mine is upstream on the left. Two residents/neighbors of the mine have witnessed the company pumping sludge from its settling pond on several occasions since the flood. The latest was tonight as I posted this article. They may have contributed to the build up also.

The Hallett operation is so large that the company actually mines sand on both sides of the river. You can see a small part of their operation below at the top of the frame.

Reverse angle. Taken 2/5/24.

Of course, some of the sediment shown in these photos comes from river bank erosion.

But some also comes from sand mines and new developments that have clearcut thousands of acres without taking precautions to control runoff. See examples below.

Northpark South developer clearcut wetlands and is draining through sand mine into West Fork where blockage appeared. Picture taken Jan. 24, 2024 during lull in rain.
Looking back at 2023
Evergreen Development at SH242 and FM1314
Colony Ridge drainage ditch in East Fork Watershed. Few if any of the ditches and detention ponds in the development have erosion protection measures installed per Liberty County regulations. Colony Ridge is now 50% larger than Manhattan.

Of course, we have many responsible developers and sand miners. But we also have some who are not.

Turning Natural Events into Unnatural Disasters

Robin Seydewitz is the river enthusiast, canoeist, kayaker, and flood activist who took many of the photos above. She said, “Sand mines that don’t operate safely are a big part of the problem. So are developers who clearcut land without barriers or natural vegetation to stop sediment from running off. The lack of enforcement for drainage regulations is another part of the problem. We need more protection for the public. This is my opinion. We are not protected; the mine owners, operators and developers are.”

The moral of this story?

We need better enforcement of drainage regulations. And we need another river survey, like the one we had after Harvey, to see how much conveyance has been reduced.

“It is foolish to keep dredging parts of the river downstream without addressing root causes upstream.”

Robin Seydewitz

Posted by Bob Rehak on 2/5/24

2351 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.

Friendswood Clearing 553 Acres in Huffman

Friendswood Development Company has started clearing 553 acres west of Huffman-Cleveland Road. It will eventually extend from Northwood County Estates on the north to Cypress Point on the south. Plat records show that Friendswood has named the development “Sila.”

Long, Narrow, Dense Homesites

The new residential community will contain an unspecified number of homesites, most long and narrow. This will certainly increase the percentage of impervious cover relative to the surrounding area.

Detail from Sila Section 3 plat approved by Houston Planning Commission in 2023.

Existing homes sit on larger, heavily wooded lots. So, this and other new, nearby developments will change the character of the area considerably. Along with that will come more traffic and congestion.

To put that in perspective, I talked to one homeowner in nearby Northwood Country Estates who owns a five-acre lot.

Forty-five of the lots indicated above could fit on his property.

Drainage Plans

Friendswood appears to be almost halfway done with clearing land for Sila. Consistent with best practices and construction plans, contractors appear to be clearing one section at a time, installing perimeter catchment ditches, erecting silt fence, and stabilizing land before moving on to the next area.

Detail from Sila drainage impact analysis.

The drainage analysis also claims that the development will provide more than the minimum amount of required detention-basin capacity. The minimum required is .65 acre feet per acre. But the engineering firm BGE says it will provide .67.

The minimum requirement was established by Harris County Flood Control District in 2019 after Hurricane Harvey. So, it should accommodate 100-year rainfalls projected under Atlas 14, NOAA’s current standard for rainfall estimates.

Approximately the northern half of this area has been cleared to date.

Approximately Half of Land Cleared So Far

The pictures below, all taken on 2/3/24, show the areas cleared so far.

Looking west over Huffman-Cleveland Road at extent of clearing. Curvature in road is caused by wide-angle-lens distortion.

The yellowish runoff in the foreground of the photo above is from Saint Tropez another new, but different development seen in the background of two pictures below.

Note the ditches that channel runoff away from homes in Northwood County Estates in upper right.

A 1.5 inch rain the night before I took these photos caused the ponding water you see.

Reverse angle. A series of three connected stormwater retention basins will flank the main entry road. Area to right (south) has not yet been cleared.
Looking east toward Saint Tropez across Huffman-Cleveland Road. Friendswood appears to have planted grass in foreground to reduce erosion.
Silt fence protects neighbors in other areas cleared earlier.

Proposed Lake Houston Mitigation Bank

The Sila property will drain into hundreds of acres that are part of the proposed Lake Houston Mitigation Bank.

Looking W at wetlands and floodplain between Sila and the East Fork San Jacinto.

LH Ranch has proposed creation of the wetlands mitigation bank here.

East Fork San Jacinto River and Lake Houston Park beyond.

The preservation of so much land will help protect homebuyers from flooding. It will also provide wildlife habitat and an exceptional recreational amenity. Here’s the prospectus for the mitigation bank presented to the Army Corps. Corps approval still appears to be pending as of this writing.

Areas of Concern

Two areas of concern, however, exist near the land most recently cleared. Contractors have not yet erected silt fence or dug protective ditches behind some of the neighboring homes on Davidson Lane in Northwood County Estates.

Looking S. Neighboring homes in upper right were still unprotected from runoff when I took this picture on 2/3/24. Water flows from left to right toward East Fork San Jacinto out of frame on the right.
Looking W. Note how runoff is draining across neighbor’s property. A larger rain could have caused damage.

Neighbors in Northwood County Estates are also concerned with how existing drainage will tie into Sila’s drainage. Elevations on county drawings and Sila’s drawings differ in places. So residents are asking for confirmation that existing ditches will continue to drain properly.

Ditch at end of Davidson Lane in Northwood Country Estates.

For the most part, with the exceptions noted above, Friendswood seems to be responsibly navigating the perilous early phase of development between clearing and the installation of drainage.

Posted by Bob Rehak on 2/4/24

2250 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.

WLHP Developer Still Flooding Neighborhood

Overnight, the gauge at West Lake Houston Parkway (WLHP) and the West Fork received 1.44 inches of rain. And once again, runoff from Trammell Crow’s High Street Residential apartment complex on WLHP flooded surrounding streets and neighbors.

Visit from Engineering, Pollution Control and Constables

Harris County Engineering made a series of visits to the work site earlier this week in an effort to bring the developer into compliance with stormwater regulations. Harris County Constables and Harris County Pollution Control even accompanied the engineering staff to the site on 2/1/24.

After that visit, a member of the engineering staff told a neighbor that work at the site had been shut down until contractors came into compliance. Reportedly, mitigation work was the only work allowed on the site. But evidently, the developer had other priorities.

Sediment-laden runoff from construction sites is one of the main sources of sediment pollution in rivers and lakes. It has been linked to blockages that contribute to flooding.

Changes Between 2/1/24 and 2/2/24

On Friday, 2/2/24, I paid the site the Trammell Crow construction site a visit and saw some stormwater-mitigation work in progress. Specifically, contractors appeared to have:

  • Dug a small pond to let sediment settle out of water.
  • Dug a channel toward it.
  • Cleared muck off the sidewalk on Kings Park Way.
  • Placed a short length of wattle roll between the street and worksite along Kings Park Way. (Wattle is a temporary erosion control and sediment control device used on construction sites to protect water quality in nearby streams, rivers, lakes. During rain storms, the rolls intercept surface stormwater runoff and reduce the velocity of flow.) 
  • Placed wattle in front of one of the two storm drains on Kings Park Way along the southeast side of the development.
  • Erected a six-foot-high privacy fence around three sides of the site.
  • Stationed a guard at the worksite entrance. They clearly didn’t want anyone documenting what they were or weren’t doing.

Had they spent as much time erecting a runoff barrier as they did the visual barrier, they might have prevented another stormwater debacle.

Other work unrelated to stormwater mitigation also appeared to be underway at the site Friday afternoon.

Still No Results

By 8 am Saturday morning (2/3/24), my phone was blowing up. Irate neighbors were sending me videos. Once again, Kings Park Way and West Lake Houston Parkway were being flooded.

Screen capture from video sent by reader 8:43am 2/3/24. For full video, click here or on image.

By 10:30 am, the same intersection looked like this.

Someone had removed the wattle and a sand bag to let the street drain. Note the new privacy fence in background.

That’s one way to solve a street-flooding problem. Flush the silty muck down the storm drain.

At noon, here’s what you could see elsewhere with a drone.

Looking toward the same troubled corner from the other side of the fence. Note water seeping underneath.
Elsewhere, they had begun digging a trench to channel water toward the sediment pond.
But the trench from the troubling corner did not reach the sediment pond.

Unprotected Perimeter Remained

Beyond the main entry, no silt fence and water leaking under privacy fence, which was leaning over.
At the back of the property, no fence at all and water flowing into neighboring property.
Water was escaping all along the back of the property.

Perhaps the developer should have spent more time controlling stormwater and less time concealing the site with a half mile of privacy fence.

It makes me wonder whether their values are misplaced.

Posted by Bob Rehak on 2/3/24

2349 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.