Tag Archive for: Lake Houston

Phase 1 of Northeast Water Purification Plant Expansion Nears Completion

According to a December 15 press release by the Texas Water Development Board, Phase 1 of Houston’s new Northeast Water Purification Plant expansion is nearing completion. Phase 1 will supply 80 million gallons per day of treated surface water to the residents of Harris County, Fort Bend County and City of Houston.

Two more phases remain. Phase 2A will deliver another 80 million gallons per day to the same areas. Phase 2B will deliver 160. So the entire complex, when complete, will deliver another 320 million gallons a day. That’s in addition to the 80 million gallons per day the original plant delivered before expansion.

Goals of Plant

The Texas Water Development Board provided $1.9 billion for the Northeast Water Purification Plant expansion project, making it one of the largest in the country.

The plant has two goals:

  • Provide water for a population that increases by almost a million people per decade.
  • Reduce groundwater usage and subsidence.

Completion Estimated in 2025

The TWDB did not provide a date for expected completion of the next two phases, but at a May 2023 community meeting, project managers estimated a completion date in 2025.

Artist’s rendering of completed project, looking NNW. Expansion area outlined in orange.

Satellite photo from May with substantially complete phase outlined in red.
Phase 1 in center of plant now substantially completed. Original plant is on far right. Photographed in August 2023.
Phases 2A and 2B still under construction. Photographed in August 2023. Looking south.
Entire plant. Looking east across older area toward new construction. Lake Houston at top of frame.
Plant’s new Intake Facility. Those twin pipelines are big enough to drive pickup trucks through.

The Luce Interbasin Transfer Project is associated with the expansion of the treatment plant. The channel from the Trinity River will ensure a steady supply of water in Lake Houston as Montgomery County’s growth demands more water from Lake Conroe.

Reducing subsidence is paramount for the region. Subsidence has been linked to flooding. In fact, a whole subdivision on Galveston Bay in Baytown became uninhabitable before the State created the Harris Galveston Subsidence District.

Here’s its story.

Posted By Bob Rehak on 12/18/23

2302 Days since Hurricane Harvey

Search For Sediment Solutions Should Lead Straight to Colony Ridge

Harris County Flood Control, SJRA, and the Cities of Humble and Houston using funding provided in part by the Texas Water Development Board are searching for sediment solutions in the Upper San Jacinto River Basin. Their major scientific study includes all or parts of seven counties: Harris, Montgomery, Waller, Grimes, Walker, San Jacinto and Liberty – all land draining into Lake Houston.

From Technical Memorandum 1 of the Upper San Jacinto River Basin Regional Sedimentation Study.

The high-level goal: to better manage sediment in the river basin. Sediment reduces both floodway conveyance and the storage capacity of Lake Houston. Both contribute to the frequency and severity of flooding.

Among other things, the study partners hope to prioritize sediment hot spots so they can develop sediment solutions and recommendations.

I hope they look at Colony Ridge. It exemplifies a major hot spot and points the way to an obvious sediment solution – better enforcement of existing regulations.

Scope and Status of Sediment Study

The study is now about half complete. With much of the fieldwork complete, the partners will next focus on modeling, hotspot identification, area prioritization and sediment solutions, according to Matt Barrett, Water Resources and Flood Management Division Manager atSJRA.

To date, the study has examined a variety of factors:

  • Topographical characteristics (watershed size, length, slope, relief, etc.)
  • Land Cover (degree of development, forested percentage, agricultural, wetlands)
  • Soil Types and Erodibility
  • Meteorological (annual rainfall amounts and intensity).

The Colony Ridge area receives some of the highest rainfall totals and highest intensity rains in the river basin.

From Technical Memorandum #2 of the USJRB Sedimentation Study, Page 16. Colony Ridge location circled in red.

Colony Ridge also ranks among the most erodible areas in the entire river basin.

Soil erodibility in the basin. From Technical Memorandum #2, Page 13. Colony Ridge circled in blue.

So, you would hope that a development 50% larger than Manhattan, which is decimating forests and filling in wetlands would receive some scrutiny.

Colony Ridge erosion
Colony Ridge ditch has widened approximately 80 feet in 6 years due to lack of erosion control measures such as backslope interceptor swales and grass.
Colony Ridge is now 50 percent bigger than Manhattan
Rivers of mud in Colony Ridge. Even the erosion is eroding.
Guess which way to colony ridge
Sediment coming down the East Fork (right) from Colony Ridge
East Fork Mouth Bar cost $18 million to dredge.
San Jacinto East Fork Mouth Bar between Kingwood and Huffman cost $18 million to dredge.

Sediment Solutions Must Address Development Practices

Erosion occurs naturally. But poor development practices can accelerate the rate of erosion unnaturally.

Regulations in Liberty County call for backslope interceptor swales to prevent sheet flow over the sides of ditches. I have yet to see one such system anywhere in the 30+ square miles of Colony Ridge. What you typically see is this.

All that sediment washes downstream where it reduces the carrying capacity of rivers and the storage capacity of Lake Houston.

Liberty County regulations also call for planting grass on the side slopes of ditches and detention basins. The grass reduces erosion, too. But you don’t see much grass on those side slopes either.

Compare the ditch above with the ditch below in Harris County to see how grass and backslope interceptor swales can reduce erosion.

Small swales behind main slopes capture sheet flow heading toward the ditch. Pipes then take runoff to the bottom of ditch, thus reducing erosion on side slopes.

Here’s Colony Ridge again.

Three-mile-long Colony Ridge drainage ditch has no grass or backslope interceptor swales.

Address the Elephant in the Room Before the Next Disaster

Ironically, both Liberty and Harris County have almost identical regulations for erosion control. Harris County enforces them; Liberty County doesn’t.

Enforcement of development regulations is the elephant in the room.

So, as the SJRA and its partners search for sediment solutions, here’s one simple recommendation. Enforce regulations already on the books.

Colony Ridge and other developments that skirt regulations represent a disaster waiting to happen. Unfortunately, it will probably take a disaster, such as Harvey, to cause leaders to take action. But by then, it will be too late.

Posted by Bob Rehak on 10/20/23

2242 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.

Update on Floodgates, Dredging, Sand Traps from Martin, Costello

At Mayor Pro Tem Dave Martin’s final town hall meeting last night, he and Chief Recovery Officer Stephen Costello gave an update on the status of new, higher capacity floodgates for the Lake Houston Dam. Their talks also addressed dredging and sand traps.

City of Houston Chief Recovery Office Stephen Costello (l) and Mayor Pro Tem Dave Martin at Martin’s final town hall meeting on 10/17/2023. Term limits bar Martin from running again for Council, though he is running for City Controller.

According to the latest estimate, construction of the gates now looks like it could begin in mid-2026, barring unforeseen setbacks.

The City has scheduled more dredging for the San Jacinto West Fork south of where the mouth bar used to be. Also, Costello says the City has completed opening up ditches and tributaries north of the railroad bridge and is now starting on those south of it.

Finally, Costello revealed that Lake Houston has lost almost 20% of its capacity due to sedimentation. To receive future dredging grants, the City must take steps to reduce the rate of sediment inflow. Costello revealed plans for a pilot sand-trap project in a point bar outside the Hallett mine far upstream. He said that the mine had agreed to remove trapped sediment there for free. Otherwise, he did not explain why a possibly more effective location closer to the problem area was not chosen for the pilot project.

For more details on each, see below.

Gates Details/Timeline

The purpose of adding more floodgates to the Lake Houston Dam: to lower the lake faster in advance of a flood.

  • The City must now start to lower the lake so far in advance of a storm that storms can veer away before they arrive. This wastes water.
  • The existing gates have 1/15th of the release capacity of the gates on Lake Conroe. This makes a joint pre-release strategy virtually impossible in extreme storms.

After examining and discarding the notion of adding crest gates to the spillway portion of the dam, the City is now focusing on adding 11 tainter gates to the earthen portion of the dam (east of the existing gates).

Proposed location for 11 new tainter gates.

With Mayor Sylvester Turner’s help, the City secured enough funding for construction during the regular session of this year’s legislature.

Next steps include:

  • 3/24 – New environmental and historic preservation assessments, Army Corps permitting
  • 12/24 – Construction plans completed
  • 1/25 – Bidding
  • 6/25 – Award Contract
  • 5/26 – Begin Construction

The success of this plan will require the election of a new Mayor and City Council Representative who are committed to the project. Early voting begins next week.

Dredging Volumes, Costs

Dredging at various locations around Lake Houston will likely be a continuous effort for years to come. Sedimentation has already reduced the capacity of Lake Houston an estimated 18%. The City estimates future yearly losses in the range of 360-460 acre feet per year.

Historic and projected capacity loss in Lake Houston due to sedimentation.

One acre roughly equals the size of a football field. So imagine 400 football fields covered with sludge a foot deep. Each year!

To keep this problem in check, the City is already looking at doing additional dredging on the East and West Forks. It and the Army Corps finished major projects in both areas less than four years ago.

East of Atascocita and south of the convergence of the East and West Forks, the City plans to spend another $34 million to remove almost 900,000 cubic yards of sediment.

To date, Costello estimates that dredging nearly 4 million cubic yards of material has cost $186 million.

Summary of dredging costs and volumes in Lake Houston since Harvey

The City hopes to recoup some of these costs by reselling sand that it recovers from “hilltops” in the lake. Costello showed the heat map below. Notice the heavy sediment concentrations in the lake’s headwaters. This is because sediment drops out of suspension where rivers slow down as they meet standing bodies of water.

In addition to reducing the volume of Lake Houston, the sediment also poses a flood threat. It reduces conveyance of the rivers and lake forcing water up and out. Sediment blockages, such as the mouth bar, can also form dams that back water up.

Costello also addressed the ongoing dredging of 17 canals around Lake Houston. He said the focus is now shifting to the southern part of the lake.

Sand Traps to Reduce Inflow

In addition to dredging sediment from the lake, Costello also emphasized the need to reduce sediment coming downstream via sand traps. This last effort may be a condition of future grants for dredging.

Costello described two pilot types of pilot projects that the City is working on with the SJRA and sand-mining industry. The first is “sand traps” dug in point bars outside sand mines. The second: in-channel traps.

The idea behind the traps: dig holes in the river or its sand bars where migrating sand can settle out of the flow before it reaches the lake.

The first project may be near the Hallett Mine on the West Fork. According to Costello, the mine has agreed to remove the sand for free, thus reducing long term maintenance costs.

During Q&A after Costello’s presentation, however, he admitted that the City has no plans to try to get sand mines to reduce illegal emissions. In one notable instance, the TCEQ documented 56 million gallons of sludge discharged into the West Fork by the LMI mine.

Controlling sediment is crucial in reducing flooding. Accumulated sediment reduces storage capacity and conveyance for stormwater. The smaller capacity means lakes and rivers will flood faster and higher.

For high res versions of all the slides shown in the Town Hall, see this PDF.

Posted by Bob Rehak on 10/17/23

2241 Days since Hurricane Harvey

Why Lake Houston Is So Full in a Drought

I flew over Lake Houston this morning in a helicopter. I expected to see the barren lake bed in places like you could during the 2011 drought. However, much to my surprise, the lake was virtually full.

Coastal Water Authority Shows Lake Down Only 6 Inches

The Coastal Water Authority, which manages the lake for the City of Houston, shows Lake Houston is only down a half foot.

Coastal Water Authority dashboard as of 8/12/23 at 6PM

Water was lapping at the edge of the the spillway.

Lake Houston Dam spillway. Photo take 8/12/23 at approximately 10am.

SJRA Shows Lake Conroe Down About 15 Inches

Lake Conroe is down about 15 inches from its normal conservation pool (the target level). And it hasn’t released any water downstream toward Lake Houston in months. The SJRA’s dashboard shows

SJRA Dashboard on 8/12/23 at 6PM.

Luce Bayou InterBasin Transfer Canal Bringing the Water

So what’s keeping Lake Houston full? What is offsetting drought and evaporation?

A quick check of the gages on the Harris County flood warning system shows areas far upstream have gotten small amounts of rain. But the most water we saw moving all day was coming from the Trinity River via the Luce Bayou InterBasin transfer project.

Luce Bayou Inter-Basin transfer canal bringing water to Lake Houston from the Trinity River on 8/12/23 at 9 am.

Gages upstream from Lake Livingston, which captures water coming down the Trinity River from Dallas/Fort Worth, recorded approximately 11 inches of rain in June, July and August (to date).

Lake Conroe got enough rain to offset some evaporation but not enough to supply Montgomery and Harris Counties.

It’s nice to have backups for Lake Houston in a drought, especially widely scattered backups that can capture rain moving through different parts of the region.

Posted by Bob Rehak on 8/12/23

2174 Days since Hurricane Harvey

CWA Exploring Alternate Plan for Adding Lake Houston Dam Gates

Coastal Water Authority (CWA) recently posted minutes from its May 11th board meeting that reveal a possible new direction for adding more flood gates to the Lake Houston Dam. After months of discussing various crest gate alternatives to increase the release capacity of the dam, engineers will now focus on examining two tainter gate alternatives. One would add six tainter gates, the other twelve.

Neither alternative would modify the concrete portion of the spillway, as crest gates would. Black & Veatch, the engineering firm in charge of the project, will explore adding the tainter gates in the earthen embankment to the east of the existing spillway. See below, upper right.

Looking ENE at Lake Houston Dam. Black and Veatch is now exploring adding tainter gates to the earthen portion of the dam in the upper right.

The eastern embankment is a solid earthen area 2800 feet long east of the spillway and existing gates (see upper right of photo above). Water cannot get over it in a storm because it is so much higher than the spillway. By adding various structures in this area, engineers could widen the current spillway capacity, allowing release of more stormwater.

Tainter gates rotate up from a central pivot point. Crest gates rotate down from a bottom hinge, like a piano lid.

Minutes from May CWA Board Meeting

Item IV(B) on Page 3 of the May 11, 2022, minutes states, “…CWA, City of Houston (COH), and Black and Veatch (B&V) met on April 14, 2022. During that meeting the COH requested that an alternate gate location to the east of the existing gate structure be further [emphasis added] evaluated.”

Following the meeting, B&V developed a scope of work to update the gate concepts and construction costs for this area. The COH provided comments and B&V modified its proposal. B&V reportedly began work on the new direction by June 1.

Additional Funding Needed

Each of the new alternatives would require additional funding; neither fit within the existing budget, according to the CWA staff. COH Public Works will pay for the new evaluation.

Wayne Klotz, P.E. and President of the CWA Board, reminded everyone present that COH owns the dam and is the FEMA grantee for this project, while CWA works for and takes direction from COH.

Minutes from the June CWA meeting have not yet been posted. The last post about gates on the COH District E website was almost a year ago on July 8, 2021.

7/4/22 Screen Capture from District E Website.

However, City Council member and Mayor Pro Tem Dave Martin did take questions on the project at an April 2022 community meeting. At the time, Martin expected to have a final answer on gates in a “September-ish” time frame.

Based on costs of the Addicks and Barker dam modifications by the Army Corps, some remain skeptical of any alternative for adding gates to the dam. The reason: budget and the Benefit/Cost Ratio.

Currently, the release capacity of tainter gates on the Lake Conroe Dam is 15X greater than those on the Lake Houston Dam (150,000 cubic feet per second (CFS) vs. 10,000 CFS.)

Concept Studied and Rejected Once Already

Adding gates to the eastern embankment was one of the original concepts evaluated. (See Column 5, Offsite Alternative #2, Column 5, Page 4.) But engineers focused on adding crest gates instead, largely because the total estimated costs for adding tainter gates at that time exceeded $90 million for a $50 million budget. However, the Army Corps also had environmental concerns about adding gates to the eastern embankment.

FEMA initially gave the City three years to complete the project (18 months for engineering and 18 for construction). Engineering began in April 2020.

No other details about May’s change in direction have been released to my knowledge.

Posted by Bob Rehak on 7/4/2022 based on minutes from the May CWA Board meeting

1770 Days since Hurricane Harvey

Dredgers Move to Rogers Gully from East Fork

Within the last week, the focus of dredging moved from the East Fork San Jacinto to the mouth of Rogers Gully on the west side of Lake Houston near the Walden Country Club. HCFCD conducted a dredging operation upstream from the Rogers Gully mouth bar in 2020. But the mouth bar itself is in Lake Houston, which is owned by the City of Houston. So this portion is the City’s responsibility.

Where dredging stopped in East Fork in late February. Looking South. Luce Bayou on upper left. FM1960 Bridge in upper right. Picture taken 2/27/22.
Rogers Gully mouth bar has already been partially removed by the dredgers anchored in the distance for the evening. Looking east toward Huffman on far side of lake from over the Walden Country Club. Photo taken 3/1/22.

New Base of Operations Will Shorten Supply Lines

At the same time, the base of operations for dredging appears to be moving from the West Fork to a marina across the lake from Rogers Gully. The new drop off point for spoils is about 2.2 miles from Rogers Gully. Compare that to almost 7 miles to get from the East Fork to Berry Madden’s property south of River Grove Park on the West Fork.

New deposit site for dredging spoils on Fairlake Lane in Huffman. Photo taken 2/27/22.

Over the weekend, I photographed dredgers preparing the site and carting the first loads of sediment to a dirt/mulch company about six miles east on 1960.

Where spoils from Lake Houston are going on FM1960 toward 99.

The dirt company is about 2 miles inside the new Grand Parkway extension.

Looking south. New Grand Parkway extension crossing FM1960. Photo taken 2/27/22.

The new highway will open vast new areas for development and create ready markets for dredging spoils to elevate homes and build roads.

Focus Shifting to Inlets Around Lake

According to State Representative Dan Huberty, about $40 million remains in the dredging fund appropriated by the state legislature last year. He hopes that after inlets around the lake are cleaned out, that dredgers will return to the East Fork in the future to continue the effort there.

Pictures taken this afternoon show that in the last two days, the dredgers have taken a significant bite out of the Rogers Gully mouth bar, which in my opinion, was the worst of many smaller inlets around the lake.

Rogers Gully mouth bar in August of 2020. Compare to photos below to see progress already made.

The photos below tell the story.

Looking west from beyond one of the anchored dredges toward the mouth bar and the Walden Country Club in the top center.
Still looking west at the partially removed mouth bar.
Looking NNW. From here, tugs will ferry the pontoons toward the general vicinity of that white spot on the lake front in the upper right. Note the FM1960 bridge in the background.

Soon, the dredgers will finish with Rogers Gully and move on to the next inlet.

Posted by Bob Rehak on 3/1/22 with input from Dan Huberty

1645 Days since Hurricane Harvey

Huberty Secures Another $50 Million for Lake Houston Dredging

State Representative Dan Huberty announced on Wednesday this week that he secured another $50 Million for dredging Lake Houston through a rider he attached to SB 1 – a 972 page appropriations bill – earlier this year.

Rider to SB 1 Added During Last Conference Committee

The rider actually stipulates the money will go to the Texas Water Development Board but earmarks it. The text says in part, “Water Development Board shall allocate $50,000,000 for the state fiscal biennium beginning September 1, 2021, for the purpose of providing financial assistance for removing accumulated siltation and sediment deposits throughout the San Jacinto River and Lake Houston.”

The bill became effective on 9/1 after a final conference committee, vote and the Governor’s signature. Huberty credits Chairman of the House Appropriations Committee, Greg Bonnen, Representative Armando Walle, also on the House Appropriations Committee. Huberty said, Bonnen helped it go in and Walle made sure it stayed in.

Huberty said the money will be used to keep dredging continuously as long as it lasts. The City will actually be doing the dredging (see photos below). Huberty also credits Mayor Sylvester Turner and Mayor Pro Tem Dave Martin for working to make the appropriation happen.

Where Money Will Be Used

In addition to East Fork dredging, Huberty sees the money being used to clear accumulated siltation from the mouths of inlets around the lake, such as those in Huffman, Atascocita and Walden.

Update on Status of East Fork Dredging

Shortly before sundown today, I put a drone up from Kingwood over the East Fork and captured the images below.

Looking SE toward Luce Bayou entrance to East Fork and one of two mechanical dredges currently on station.
Closer shot of same dredge. Note: all photos were taken just before sunset on Saturday night, 11/20/21.
Looking south toward Lake Houston, West Fork confluence (upper right) and FM1960 bridge in distance.
Looking North. Kingwood on left; Huffman on right.

The shot above shows you just how big this task will be. I first photographed these dredges in the East Fork on October 12. So it’s taken them roughly five weeks to excavate the sandbar between the two pontoons.

Below, you can see what the same area looked like almost a year before dredging started. The photo gives you some idea of the immensity of the task. The sand bars you see grew 4000 feet in length during Harvey and Imelda.

East Fork Mouth Bar after Imelda. Taken in December 2020, ten months before start of East Fork dredging about five weeks ago.

Josh Alberson who boats this area regularly with a shallow draft jet boat found that the depth of the river through his reach had been reduced from 17 feet before Harvey to about 3 feet after Imelda. That’s a major loss of conveyance that backed water up and contributed to flooding on both sides of the river.

Smaller tributaries exhibit similar problems, for instance Rogers Gully.

Rogers Gully mouth bar in Atascocita

Thank You Dan and God Speed

Everyone in the Lake Houston Area owes Dan Huberty a huge “thank you” for this one. Huberty, who has served in the House for 10 years, has announced his intention not to run again. Throughout his tenure, Huberty helped reform state education funding. He also passed regulation that forced sand mines to register with the TCEQ during his freshman year in 2011. God speed on the next leg of your journey, Dan.

Posted by Bob Rehak on 11/20/21

1544 days after Hurricane Harvey

San Jacinto East Fork Dredging Begins

This morning, for the first time, I photographed dredging on the San Jacinto East Fork. It was a welcome site and one that hundreds of East Fork residents who flooded will appreciate.

Three Months After Plans Unveiled

It was back on July 9, 2021, that Stephen Costello, the City’s Chief Recovery Officer, unveiled the City’s plans to begin East Fork dredging. At the time, Costello said crews would have to dredge their way there through a shallow channel south of Royal Shores in Kingwood.

On July 11, I first photographed dredging in the channel.

On September 23rd, I photographed crews about three quarters of the way through the channel.

Finally, today, October 12, three months later, I photographed a barge moving straight through the channel and into the East Fork. I even had to move locations a couple time to keep the drone within range.

Drone Photos of East Fork Dredging from 10/12/2021

Two mechanical dredges on East Fork, just upstream from the entrance to Luce Bayou.
Today’s dredging location circled in red. Arrow points way back to where crews are depositing the spoils on the West Fork just south of River Grove Park.
Tug pushing empty pontoon through Royal Shores Channel toward East Fork (top). Looking SE. Note FM1960 Causeway in upper right.
Looking NE toward Luce Bayou on opposite shore to begin Dredging
Empty barge turns NNE. East Fork dredging location is around the finger that sticks out into the river from the upper left. After loading up with silt and sediment, the barge will return to the West Fork to deposit the spoils.

More Dredging $$$ Voted by Commissioners Today

This morning, in Harris County Commissioners Court, Agenda Item 102 passed unanimously without discussion. The motion will contribute $10 million from the Harris County 2018 flood bond funds to extend the dredging on the East Fork, West Fork, and Lake Houston, including the entrance to Rogers Gully.

Posted by Bob Rehak on 10/12/2021

1505 Days since Hurricane Harvey and 756 since Imelda

Floodwaters Converging Downstream on Lake Houston

As of Monday morning, the threat to Lake Conroe had passed, but now floodwaters from the rain soaked northwestern portion of the region are converging on Lake Houston. Here’s a roundup of what’s happening where.

Lake Conroe Going Down

The San Jacinto River Authority reduced its discharge rate to from 9275 cubic feet per second (CFS) to 8120 CFS as the level of Lake Conroe continued to recede, but the West Fork came out of its banks at US 59. The West Fork also began flooding Kingwood’s River Grove Park and the abandoned Noxxe Oil Fields between the river and the Forest Cove Little League Fields.

As of 5:09 pm on 5/3/2021

Lake Conroe Re-Opening With Caution

The SJRA issued a press release at 10:15 am. stating that Lake Conroe will reopen to normal lake traffic at noon Monday, May 3. However, boaters are still urged to use extreme caution due to floating debris and submerged objects that may not be fully visible. With submerged bulkheads, lake area residents should also be cautious of electrical outlets and equipment coming into contact with water.

SJRA is currently releasing water from the Lake Conroe dam to gradually lower the water level back to conservation pool of 201’, but SJRA must strike a balance between upstream recovery and downstream danger. For real-time information on Lake Conroe levels, releases, rainfall totals, or stream flows visit www.sjra.net

SJRA clarified that it intends to return Lake Conroe to 200 until June 1 per its seasonal lake lowering policy as soon as emergency operations restore it to 201. Normally, SJRA would begin recapture on June 1, not May 1. The seasonal release rate is much lower than the current rate.

Floodwaters Converging Toward South and East

Meanwhile, the glut of rainfall that inundated the northwest portions of Houston last week is starting to converging on areas downstream.

As of 10:30 am, the San Jacinto East Fork is also way out of its banks at FM1485 and FM1485 is reportedly closed until Friday. That leaves one way in and out of Colony Ridge – FM2090.

The San Jacinto East Fork at FM2090 peaked overnight and is starting to recede, but is still out of its banks. The East Fork is not influenced by the Lake Conroe Dam, which is on the West Fork.

FM2090 at East Fork near Plum Grove on May 3, 2021 at noon.

FM2090 is still open, but Plum Grove resident Michael Shrader reported a steady line of traffic trying to get out of Colony Ridge up to 11:30 PM Sunday night. This underscores the need to develop alternate evacuation routes for the fast growing subdivision.

Meanwhile, the flood threat is receding at Peach Creek and FM2090.

Caney Creek at FM2090 is getting back within its banks.

And the West Fork, however, is still rising. By 9 a.m. (six hours after the hydrograph below) it was out of its banks at US59.

Flood Warning Remains in Effect for West Fork Until Further Notice

At 2:45 PM CDT Monday, the National Weather Service indicated the West Fork was 49.6 feet.

  • Flood stage is 49.3 feet.
  • Minor flooding is occurring and minor flooding is forecast.
  • Forecast…The river is expected to rise to a crest of 49.7 feet late this afternoon. It will then fall below flood stage late Wednesday morning.
  • Impact…At 49.3 feet, Minor lowland flooding begins in the vicinity of the gage. North side turnaround at US 59 begins to flood. Low points on Thelma Road, Aqua Vista Drive, and Riverview Drive begin to flood.
  • Flood History…This crest compares to a previous crest of 49.7 feet on 11/13/2008.

Here are photos taken along the West Fork this morning.

A young couple surveys rising floodwaters at the turnaround under the US59 bridge. The river bank is about a hundred yards in front of them at the sign in the background. This is the northwestern extent of Lake Houston.
A log jam forms from flood debris under the pedestrian bridge over the West Fork.
Floodwater had crept past the edge of Harris County’s Edgewater Park.
However traffic was still flowing on US59 in both directions.
About a third of the abandoned Noxxe Oil Field by the Forest Cove Little League fields was under water.
The soccer fields at River Grove were partially submerged. Yesterday they were mostly dry.
The boardwalk at River Grove was underwater except for the entrance.
There was no immediate threat to Kings Harbor though the dock was only inches above water.
As floodwaters work their way downstream, Lake Houston continues to rise. As of 5:30PM on 5/3, the lake is now up more than 1.6 feet and many docks are starting to go under.

No widespread flooding is expected in the Lake Houston Area. But people who live in low-lying areas or near the lake should take precautions.

Posted by Bob Rehak on 5/3/2021 based on information from NWS, HCFCD, Jeff Lindner, SJRA, Michael Shrader and personal observation

1343 Days since Hurricane Harvey and 592 since Imelda

January Digest of Flood-Related News in Lake Houston Area

From construction developments to political developments, here’s your January digest of ten stories that could affect flooding or flood mitigation in the Lake Houston Area.

1. New Caney ISD High School #3

This site is located between Sorters-McClellan Road and US59 south of the HCA Kingwood Medical Center. New Caney ISD is building a new high school on the site of the old par 3 golf course behind the car dealerships that front US59. Construction crews are still pouring concrete for foundations and parking lots. Not much happened between flyovers on December 7 and January 1. But then, not much happens anywhere during the holidays. The two photos below show the progress. Construction of the detention pond is nearing completion. However, contractors still need to plant grass to reduce erosion before spring rains arrive.

New Caney ISD High School #3 site as of December 7, 2020
As of January 1, 2021.

New Caney ISD has not posted a project update since last September. Projected occupancy for the building is still Fall 2022.

2. Kingwood Cove Golf Course Redevelopment

I first talked about Ron Holley’s redevelopment of the Kingwood Cove (formerly Forest Cove) Golf Course in April last year. Since then Holley says he has been working with engineers, community groups and regulators to accommodate different interests.

Now, the development is back on the planning commission agenda for this Thursday. Holley is seeking approval of his latest General Plan and Plat. Neither show any detention ponds. The only place they could go would be in “Reserve C.” The General Plan shows that to be in the floodway and 100-year floodplain. Both could soon expand.

The West Fork floodway cuts through the southern part of Holley’s property.

The City raised an issue regarding compliance with regulations governing the re-plat of golf courses at the 12/17/2020 Planning Commission meeting. The City requested information relating to Local Government Code 212.0155.

That regulation requires, among other things, that:

  • Public notice of the re-plat be printed in newspapers
  • The Forest Cove Property Owners Association is notified
  • Residents have an opportunity to voice their opinions at public hearings
  • Owners of all properties within 200 feet of the new plat be notified in writing via US Mail.
  • If 20% of the owners object, the re-plat must win the approval of 3/5ths of the planning commission.
  • The developer proves there is adequate existing or planned infrastructure to support the new development.
  • The new subdivision will not adversely affect health, safety traffic, parking, drainage, water, sewer, or other utilities
  • The development will not have a materially adverse effect on existing single-family property values.
  • The new plat complies with all applicable land-use regulations and restrictive covenants and the City’s land-use policies.

That’s a lot to do over the holidays. So the general plan may need to be withdrawn and resubmitted after all the information has been produced. We should know more by Wednesday afternoon.

3. Dredging

Mayor Pro Tem Dave Martin’s January newsletter stated that Disaster Recover Corporation has removed 385,000 cubic yards from the West Fork Mouth Bar out of an estimated total of 400,000 cubic yards.

Then he alluded to dredging another 260,000 cubic yards from the area north of the mouth bar.

He also alluded to a Second Phase: dredging the San Jacinto East Fork and other locations in Lake Houston.

Finally, Martin discussed maintenance dredging. “Additionally,” he says, “during Phase Two of the project, City of Houston, Harris County, HCFCD, SJRA, and Coastal Water Authority (CWA) will develop and execute a plan for the City of Houston or CWA to assume long-term dredging operations on Lake Houston. This effort will include determining funding for dredging operations in perpetuity.”

4. Appointments to SJRA Board

Governor Greg Abbott has appointed Wil Faubel and Rick Mora, M.D. and reappointed Kaaren Cambio to the San Jacinto River Authority Board of Directors. Their terms will expire on October 16, 2025. 

Kaaren Cambio of Kingwood is a field representative for United States Congressman Dan Crenshaw. She is a former member of Women’s Business Enterprise National Investment Recovery Association, Pipeline Contractors Association, and the Houston Pipeliners Association. Cambio received a Bachelor of Business Administration from San Diego State University.

Wil Faubel of Montgomery is President of Borets US Inc. He is a veteran and senior executive in the Oilfield Services industry with more than forty years of service. He has both domestic and international experience and is a lifelong member of the Society of Petroleum Engineers and a former board member of the Petroleum Equipment Suppliers Association. Faubel received a Bachelor of Science in Mechanical Engineering from Southern Methodist University.

Rick Mora, M.D. of The Woodlands is a partner at US Anesthesia Partners and Chief of Anesthesiology for Memorial Hermann Pinecoft Surgery Center. He has served as chair of the Montgomery County Hispanic Chamber of Commerce and is a founding Board member of the non-profit, Los Doctores de The Woodlands. Mora received his MD from the University Of Illinois College Of Medicine.

5. Forest Cove Townhome Buyouts

Harris County Commissioner’s Court will vote today on an item to exercise eminent domain on seven townhomes in the Forest Cove complex. The entire complex was destroyed after Harvey and many owners simply walked away from their properties without leaving forwarding addresses. Flood Control has been unable to find the owners after years of trying. Several may have moved out of the country. Eminent domain on these last few properties will clear the way for demolition of the entire complex and restoration of the area to nature or park land.

The once proud and idyllic townhomes in Forest Cove next to West Fork.

6. Woodridge Village

The purchase of Woodridge Village from Perry Homes is not on today’s Commissioner’s Court Agenda. However, all energies are reportedly still positive. It’s just taking time to work out the complex three-way purchase arrangements.

7. Romerica

Houston PlatTracker shows that the Romerica people may have acquired more land. But so far, they have not returned to the planning commission for approval on the latest iteration of the developer’s plans. No news is good news in this case.

8. Lake Houston Spillway Improvement Project

The City is close to finalizing the Preliminary Engineering Plan. Sources say the benefit/cost ratio looks very positive. We may see the final recommendations this month.

Engineers have examined several alternatives to add more gates to the Lake Houston dam or to increase its spillway capacity.

9. Noxxe Cleanup

The Railroad Commission could start plugging wells, removing storage tanks, and cleaning up the abandoned Noxxe lease in Forest Cove soon. The project manager has submitted work orders for final approval.

Small part of Noxxe lease next to Forest Cove baseball fields.

10. Kings Harbor New Construction

New condos are going up in Kings Harbor faster than Flood Control can tear down the ones in Forest Cove down. And they’re even closer to the river!

See new concrete pads (left center) and new construction (right foreground).

Posted by Bob Rehak on 1/5/2020

1125 Days after 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.