Back in 2019, portions of Elm Grove and North Kingwood Forest Villages flooded twice. The first time occurred on May 7th. According to Harris County Flood Control District’s (HCFCD) report on the storm, “A 30-min rate of 2.9 inches was recorded at US 59 and the West Fork of the San Jacinto River and a 1 hour rate of 4.0 inches.”
“380 structures were flooded in the Elm Grove Village subdivision and other nearby subdivisions in the northern portions of Kingwood.”
Escape. In Elm Grove on Shady Maple the night of the May 7, 2019 flood.
High water rescue
Rustling Elms Bridge in Elm Groveunderwater as school bus tries to cross it.
Water rising at night in Keith Stewart’s home on Shady Maple after May 7th flood in 2019.
Catalog of Flood Mitigation Efforts
Ever since the Elm Grove floods, Harris County, HCFCD, the City of Houston, Congressman Dan Crenshaw’s team and others have worked diligently to reduce future flood risk.
On this Mother’s Day weekend, it may bring flooded families comfort to understand how far we have come. Much remains to do, but much has already been done, or at least started.
HCFCD working to remove sediment buildup in Taylor Gully near the Maple Bend Bridge in January of 2021.The work began upstream near Rustling Elms in July 2019.
Kingwood Area Drainage Analysis and Taylor Gully Study
In 2019-20, HCFCD, Lake Houston Redevelopment Authority (TIRZ 10), and City of Houston teamed up to conduct a drainage analysis for all streams in the Kingwood area. A recommendation to prioritize engineering of drainage improvements along Taylor Gully (including Woodridge) came out of that study.
The Flood Control District began preliminary engineering study on the Taylor Gully improvements in 2021. HCFCD anticipates presenting results during late summer or early fall this year.
Purchase of Woodridge Village By County and City
In early 2021, the Flood Control District and the City of Houston partnered to acquire the 267.35-acre Woodridge Village property for approximately $14 million.
Houston Mayor Pro Tem Dave Martin lobbied the City to purchase about 70 acres of the property.
HCFCD will use the remaining 194.35 acres of the Woodridge site for stormwater detention. That will help reduce flood risk.
Crenshaw Earmarks
Congressman Dan Crenshaw secured an earmark for $1.6 million for engineering of flood mitigation improvements along Taylor Gully. The engineering should shrink the floodplain. That will effectively remove 387 structures from the floodplain and has the potential to remove another 62.
Crenshaw also has another earmark pending for $10 million to actually construct the improvements recommended by the study.
Local groups must spend earmarks during the fiscal year in which Congress approves them. So funding can’t get too far ahead of the engineering.
Taylor Gully Preliminary Engineering Study
The Taylor Gully study will look at Woodridge in conjunction with other potential Taylor Gully improvements. However, HCFCD must perform additional preliminary engineering to further evaluate specific alternatives for Woodridge and determine the best.
During each study, HCFCD will hold Community Engagement Meetings to present alternatives and gather feedback.
Start of the new floodwater detention basin that could double the capacity on Woodridge Village.This pond should ultimately expand beyond the lone trees in the middle of the frame near the top.Photo taken 4/30/22.
E&R projects provide a head start on the excavation process and risk reduction. They can start before the design of a stormwater detention basin. Contractors excavate a set amount of material within an agreed-upon timeframe and general area.
The excavation can also potentially provide interim stormwater storage while awaiting the design and construction of the final stormwater detention basin.
As of April 30, 2022, 36,421 cubic yards of material has already been removed from the site. See photo above taken that day. The project will remove as much as 500,000 cubic yards of soil and other material.
Woodridge will remain an active construction zone for up to three years.
Have a Happy Mother’s Day this weekend.
Posted by Bob Rehak on 5/6/2022
1711 Days since Hurricane Harvey and 1096 Days since May 7, 2019
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.
https://i0.wp.com/reduceflooding.com/wp-content/uploads/2019/05/Escape-e1588895116724.jpg?fit=1200%2C900&ssl=19001200adminadmin2022-05-06 19:52:552022-05-09 20:21:03Mitigation Update: 3rd Anniversary of First Elm Grove Flood
Less than six months ago, Guefen started clearing land for the Preserve at Woodridge. Plans showed that the Preserve would contain 131 Lilliputian-sized homes for rent, some as large as 668 square feet. Already, more than half the homes are framed out. And one fifth have roofs. I counted 73 homes either completely or mostly framed in the photos below.
Photos Taken April 30
Here are some pictures taken of the Preserve at Woodridge last week.
According to plans, the vertical wall behind the homesites will be a retaining wall. In the pond itself, contractors are to install a 2-foot thick clay liner in 8″ lifts, each compacted to 95%.As of last Saturday, contractors were still pumping silty stormwaterinto this channel which empties into Bens Branch at Northpark Drive.Looking SW across 17 acre site toward Northpark Drive and St. Martha Catholic Church.Not much grass will grow between these homes.It will be in shade most of the day.Looking east from over Woodridge Parkway toward Kingwood Park High School and KSA’s Northpark Recreation area.
The developer claimed 65% impervious cover. But work to date appears much denser.
Preserve at Woodridge Detention Pond Progress Much Slower
If only the pace of work on the detention pond went as fast! Instead, contractors have treated it like an afterthought. They still haven’t come close to finishing it. And grass lining? Plans don’t mention it as far as I can see.
“The erosion potential for a detention basin is similar to that of an open channel. For this reason the same types of erosion protection are necessary, including the use of backslope swales and drainage systems (as outlined in SECTION 6), proper revegetation, and pond surface lining where necessary.”
The wording in 7.2.7 leaves room for interpretation. It’s not clear whether engineers must specify all or one of the alternatives listed.
“A good grass cover must be established on all areas within the right-of-way (except the channel bottom) disturbed by channel improvements or by any type of construction. An adequate grass stand on the banks helps stabilize the channel and minimizes erosion caused by overbank flow and high velocities in the channel.”
There’s certainly a lot of ambiguity in these specifications. Montgomery County has not yet responded to a complaint about the pumping of the silty stormwater down Ben’s Branch. And the only plans the engineering department supplied are those linked above.
Best Practices Vs. Industry Standard Vs. Minimum Requirements
A source knowledgeable about construction reminded me of the tremendous difference that exists between Best Practices, Industry Standards, and Minimum Requirements. Few companies will follow best practices if it costs them money, said the source. Even industry standard practices are optional. Most just follow the minimum requirements.
And even if the engineering plans comply with those requirements, there’s no guarantee contractors will follow the plans.
So understand your local regs. And report corner cutting when you see it.
Best practices call for detention ponds to be among the first things finished on a construction site. MoCo doesn’t mandate that, however. Grass would certainly help reduce erosion here.
Posted by Bob Rehak on 5/4/2022
710 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.
https://i0.wp.com/reduceflooding.com/wp-content/uploads/2022/05/20220430-DJI_0338.jpg?fit=1200%2C799&ssl=17991200adminadmin2022-05-05 18:35:392022-05-06 22:36:59Half of Preserve at Woodridge Already Framed Out.
I last updated Humble ISD’s Kingwood Middle School (KMS) and New Caney ISD’s West Fork High School construction projects in mid-March. Since then, KMS contractors have continued work to finish the exteriors while beginning interior work.
Humble ISD has not updated its web page on KMS construction details, but some changes are visible from the exterior.
South side of building now almost all “glassed in.”Ditto for north side.Roof is substantially complete, though some work remains on AC units.West side looking east from over Woodland Hills Drive.SW side looking NE. Most of the heavy equipment is gone.Looking NW from SE side. Old building in foreground will be demolished to make way for athletic fields. Easternmost building still has the longest way to go.
New Caney ISD posted this April update on work to date for its new West Fork High School. The high school is south of the HCA Kingwood Medical Center between Sorters McClellan Road and US59.
“Overall completion of the buildings and site work is 78 percent complete. The main building and athletic support facilities are dried in with portions of the main building being air conditioned. All interior partitions are complete with finishes such as painting and ceramic tile in progress. The electrical, plumbing, and HVAC rough-in work is 85 percent complete. The ceiling grid is being installed, allowing the installation of light fixtures, A/C grills, life/safety devices, data, and sound systems to progress. The artificial turf for the football field is 80 percent complete with turf at the baseball and softball fields to follow. The general contractor is distributing topsoil in preparation to begin irrigation and landscaping.”
Here’s what all of that looks like.
Looking SE across front of campus. Sorters McClellan Road is on right. West Fork is in background out of sight.Looking NE from over Sorters-McClellan Road. Field house and football field.It’s starting to feel like fall and it’s not even summer yet.Looking north. Campus is out of frame on left. 59 is out of frame on right.Looking NW across front of field house toward high school and Sorters-McClellan Road. Looking N toward northern entrance off Kingwood Place Drive.
Compare with Previous Updates
To see how the project has progressed, compare these previous posts.
Neither of these projects has yet had an impact on local flooding.
KMS built a temporary retention pond. When the old school is torn down, it will be replaced with a larger permanent pond.
West Fork High School already has a permanent pond. It was the first thing to be completed. Grass has been growing in it since March of 2021. This has reduced the threat of sedimentation during construction. I wish all construction projects followed this model.
Posted by Bob Rehak on 5/4/2022
1709 Days since Hurricane Harvey
https://i0.wp.com/reduceflooding.com/wp-content/uploads/2022/05/20220430-DJI_0312.jpg?fit=1200%2C799&ssl=17991200adminadmin2022-05-04 19:24:072022-05-04 19:28:40Construction Update: KMS and West Fork High School
Mitigation Update: 3rd Anniversary of First Elm Grove Flood
Back in 2019, portions of Elm Grove and North Kingwood Forest Villages flooded twice. The first time occurred on May 7th. According to Harris County Flood Control District’s (HCFCD) report on the storm, “A 30-min rate of 2.9 inches was recorded at US 59 and the West Fork of the San Jacinto River and a 1 hour rate of 4.0 inches.”
“380 structures were flooded in the Elm Grove Village subdivision and other nearby subdivisions in the northern portions of Kingwood.”
Investigation by HCFCD the following day revealed that “… the flooding was potentially caused by development upstream in Montgomery County that sent large volumes of sheetflow into the subdivisions and Taylor Gully.” This video shows the sheetflow pouring out Perry Homes’ Woodridge Village property into homes along Village Springs Drive.
Perry contractors had clearcut 267 acres without installing the required detention ponds when the rain hit.
In the three years that followed, I posted 242 reports about every aspect of that flood and a second one during Imelda. The second flood affected two to three times more homes in the same areas.
The floods triggered multiple lawsuits which Perry Homes, its subsidiaries and contractors finally settled late in 2021.
What It Looked Like
Catalog of Flood Mitigation Efforts
Ever since the Elm Grove floods, Harris County, HCFCD, the City of Houston, Congressman Dan Crenshaw’s team and others have worked diligently to reduce future flood risk.
On this Mother’s Day weekend, it may bring flooded families comfort to understand how far we have come. Much remains to do, but much has already been done, or at least started.
Major Maintenance on Taylor Gully
Even before the second flood, HCFCD undertook a major maintenance project on Taylor Gully to remove accumulated sediment and restore channel conveyance.
The project began in 2019. Work extended downstream to the natural portion of the channel. It finished in 2021.
Kingwood Area Drainage Analysis and Taylor Gully Study
In 2019-20, HCFCD, Lake Houston Redevelopment Authority (TIRZ 10), and City of Houston teamed up to conduct a drainage analysis for all streams in the Kingwood area. A recommendation to prioritize engineering of drainage improvements along Taylor Gully (including Woodridge) came out of that study.
The Flood Control District began preliminary engineering study on the Taylor Gully improvements in 2021. HCFCD anticipates presenting results during late summer or early fall this year.
Purchase of Woodridge Village By County and City
In early 2021, the Flood Control District and the City of Houston partnered to acquire the 267.35-acre Woodridge Village property for approximately $14 million.
They closed on the purchase of Woodridge Village in March 2021.
Houston Mayor Pro Tem Dave Martin lobbied the City to purchase about 70 acres of the property.
HCFCD will use the remaining 194.35 acres of the Woodridge site for stormwater detention. That will help reduce flood risk.
Crenshaw Earmarks
Congressman Dan Crenshaw secured an earmark for $1.6 million for engineering of flood mitigation improvements along Taylor Gully. The engineering should shrink the floodplain. That will effectively remove 387 structures from the floodplain and has the potential to remove another 62.
Crenshaw also has another earmark pending for $10 million to actually construct the improvements recommended by the study.
Local groups must spend earmarks during the fiscal year in which Congress approves them. So funding can’t get too far ahead of the engineering.
Taylor Gully Preliminary Engineering Study
The Taylor Gully study will look at Woodridge in conjunction with other potential Taylor Gully improvements. However, HCFCD must perform additional preliminary engineering to further evaluate specific alternatives for Woodridge and determine the best.
During each study, HCFCD will hold Community Engagement Meetings to present alternatives and gather feedback.
Excavation & Removal Contract
In January 2022, HCFCD began work on a Woodridge Excavation and Removal (E&R) project.
E&R projects provide a head start on the excavation process and risk reduction. They can start before the design of a stormwater detention basin. Contractors excavate a set amount of material within an agreed-upon timeframe and general area.
As of April 30, 2022, 36,421 cubic yards of material has already been removed from the site. See photo above taken that day. The project will remove as much as 500,000 cubic yards of soil and other material.
Woodridge will remain an active construction zone for up to three years.
Have a Happy Mother’s Day this weekend.
Posted by Bob Rehak on 5/6/2022
1711 Days since Hurricane Harvey and 1096 Days since May 7, 2019
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.
Half of Preserve at Woodridge Already Framed Out.
Less than six months ago, Guefen started clearing land for the Preserve at Woodridge. Plans showed that the Preserve would contain 131 Lilliputian-sized homes for rent, some as large as 668 square feet. Already, more than half the homes are framed out. And one fifth have roofs. I counted 73 homes either completely or mostly framed in the photos below.
Photos Taken April 30
Here are some pictures taken of the Preserve at Woodridge last week.
The developer claimed 65% impervious cover. But work to date appears much denser.
Preserve at Woodridge Detention Pond Progress Much Slower
If only the pace of work on the detention pond went as fast! Instead, contractors have treated it like an afterthought. They still haven’t come close to finishing it. And grass lining? Plans don’t mention it as far as I can see.
To see the complete plans, click here. You can find the detention basin plans and calculations on pages 18-24.
It’s not clear whether the detention pond will have a grass liner to reduce erosion or simply a compacted clay liner.
The construction plans call for compacted clay. And a search for the word “grass” did not turn up any mentions in the construction docs.
MoCo Drainage Regs Murky on Grass Lining of Detention Ponds
Montgomery County Drainage regulations get murky on whether detention ponds must have a grass lining.
“7.2.7 Erosion Control Measures for Detention Facilities” on Page 113 says:
“The erosion potential for a detention basin is similar to that of an open channel. For this reason the same types of erosion protection are necessary, including the use of backslope swales and drainage systems (as outlined in SECTION 6), proper revegetation, and pond surface lining where necessary.”
The wording in 7.2.7 leaves room for interpretation. It’s not clear whether engineers must specify all or one of the alternatives listed.
So I checked Section 6, which pertains to CHANNEL construction. “6.2.1 Grass Establishment” on Page 85 says:
“A good grass cover must be established on all areas within the right-of-way (except the channel bottom) disturbed by channel improvements or by any type of construction. An adequate grass stand on the banks helps stabilize the channel and minimizes erosion caused by overbank flow and high velocities in the channel.”
There’s certainly a lot of ambiguity in these specifications. Montgomery County has not yet responded to a complaint about the pumping of the silty stormwater down Ben’s Branch. And the only plans the engineering department supplied are those linked above.
Best Practices Vs. Industry Standard Vs. Minimum Requirements
A source knowledgeable about construction reminded me of the tremendous difference that exists between Best Practices, Industry Standards, and Minimum Requirements. Few companies will follow best practices if it costs them money, said the source. Even industry standard practices are optional. Most just follow the minimum requirements.
And even if the engineering plans comply with those requirements, there’s no guarantee contractors will follow the plans.
So understand your local regs. And report corner cutting when you see it.
Posted by Bob Rehak on 5/4/2022
710 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.
Construction Update: KMS and West Fork High School
I last updated Humble ISD’s Kingwood Middle School (KMS) and New Caney ISD’s West Fork High School construction projects in mid-March. Since then, KMS contractors have continued work to finish the exteriors while beginning interior work.
Humble ISD has not updated its web page on KMS construction details, but some changes are visible from the exterior.
Humble ISD still indicates the school will open in 2022.
Compare Current with Previous Pics
See the progress of work to date by comparing these pictures with those taken in previous months.
West Fork High School
New Caney ISD posted this April update on work to date for its new West Fork High School. The high school is south of the HCA Kingwood Medical Center between Sorters McClellan Road and US59.
“Overall completion of the buildings and site work is 78 percent complete. The main building and athletic support facilities are dried in with portions of the main building being air conditioned. All interior partitions are complete with finishes such as painting and ceramic tile in progress. The electrical, plumbing, and HVAC rough-in work is 85 percent complete. The ceiling grid is being installed, allowing the installation of light fixtures, A/C grills, life/safety devices, data, and sound systems to progress. The artificial turf for the football field is 80 percent complete with turf at the baseball and softball fields to follow. The general contractor is distributing topsoil in preparation to begin irrigation and landscaping.”
Here’s what all of that looks like.
Compare with Previous Updates
To see how the project has progressed, compare these previous posts.
New Caney ISD expects to complete the project this summer. It is one of the District’s 2018 bond projects.
Impact on Flooding
Neither of these projects has yet had an impact on local flooding.
KMS built a temporary retention pond. When the old school is torn down, it will be replaced with a larger permanent pond.
West Fork High School already has a permanent pond. It was the first thing to be completed. Grass has been growing in it since March of 2021. This has reduced the threat of sedimentation during construction. I wish all construction projects followed this model.
Posted by Bob Rehak on 5/4/2022
1709 Days since Hurricane Harvey