Elm Grove Looks for Answers and Doesn’t Have to Look Far

The hardest hit area from Tuesday’s storm seemed to be one that never flooded before: Elm Grove Village. Media have reported as many as 400 homes flooded there. As I drove down Elm Grove streets near the Harris/Montgomery County line, home after home had waterlogged trash, carpet, mattresses and furniture piled in front. Suddenly, I had eerie flashbacks to Harvey. Clusters of people in the street trading horror stories. Service trucks everywhere. Residents gaping at damage, consoling each other. People crying as they threw out prized belongings. Shock, sympathy, anger, fear all rolled into thousand-yard stares. Wondering what would come next with 8-12 more inches of rain on the way. But most of all, they were asking “Why?”

Why?

Here’s what I’ve been able to learn.

  • According to the residents I talked to, this area never flooded before…even during Harvey.
  • The storm drains were clear. City Councilman Dave Martin who was onsite this morning coordinating the City’s response showed me fiber optic video of clear storm sewers. Public Works could find no blockages near the flooded homes in Elm Grove.
  • Drone footage (below) shows there were no blockages in the ditch that services the area.
  • The rainfall intensity and duration on Tuesday both played a roll.
  • According to Martin, storm drains in this area are designed to handle 1/2 inch of rain per hour. However, Elm Grove received close to 10 inches during a 5 hour period on Tuesday.
  • A complicating factor was a new subdivision being built in Montgomery County (by a subsidiary of Perry Homes, Figure Four Partners LTD) that butts up to Elm Grove.
  • The developer clear-cut 92 acres and slanted drainage toward Elm Grove.
  • No detention ponds, silt fences, berms, sand bags, or filter socks had been installed to retain water that I could see. Also, with the exception of one or two small groves of trees, no vegetation remained to slow or absorb runoff.
  • The developer covered up an existing stream/ditch according to residents.
  • Near the end of a long, severely eroded drainage ditch, the developer installed a box culvert that couldn’t handle the volume from this storm. It backed water up and flooded the site according to residents.
  • The overflow then went into Elm Grove.
  • According to residents, construction employees routinely access the site from Elm Grove streets. Their trucks created ruts that channeled water into the streets.
  • Because the storm drain capacity could not keep up with the rainfall rate and the water flowing from the development, water rose in the streets and flooded homes. Most people I talked to had 12-18 inches of water in their homes.

The Difference? The New Development

Storms as intense as Tuesday’s have happened before without flooding in Elm Grove. Heck, not even Harvey flooded the area. No blockage existed in the sewer or the existing drainage ditches in Elm Grove. Clearly, the one thing that’s different in this equation is the new development.

Arrow represents direction of drainage in the clearcut area. Developer funneled water toward the L-shaped ditch. However, the water started flowing through streets and homes instead. Worst damage was in oval which is approximate in size and shape. Not all homes in oval flooded.
No blockages downstream in ditch. So ditch blockage was ruled out as contributing factor.

Drone Stills from Jim Zura

Drainage on site seems to funnel water toward Elm Grove and then down toward the culvert shown below. However, it appears that rain overwhelmed the drainage capacity and the lack of vegetation accelerated runoff.
If dirt piled along tree line was supposed to represent a berm, it certainly wasn’t continuous. Water flowed through openings according to residents, for instance, where men are standing in lower left.
Looking West toward K-Park HS. Elm Grove is out of frame on the left. Note how pools of water are larger on the left than right indicating that runoff is flowing towards Elm Grove.

View from the Ground

Shot taken on 5/7/19 from Woodland Hills Drive in front of Kingwood Park High School, looking southeast toward Sherwood Trails.
Sewers had not yet been installed as of 5/7/19.
On 5/7/19, the entire site was a mass of muck.
A drainage ditch or linear pond in-the-making shows signs of severe erosion. This ditch carried water toward the homes in Elm Grove that flooded.
Wider shot of same area. Not a blade of grass in sight. Rivers of mud everywhere.

Life Disrupted

A life on the curb.
A home in ruins.
Contractors were swarming the neighborhood one day after the flood.
Home after home. Street after street. Shattered lives. Few people in this neighborhood had flood insurance because it had never flooded.
The transition between Village Springs Drive in Elm Grove and the new development in Montgomery County. You can tell from the mud in the streets where the water came from. Residents report water rising in the street before it rose in the drainage ditch that bisects the neighborhood.

Family Closest to the Problem

Abel Vera, homeowner on Village Springs Drive, adjacent to the new development. The following pictures are from his home and used with his permission. His beautiful pool is filled with muddy flood water. The heavy stone pots and patio furniture were lifted by the flood and slammed into the fence.
Vera’s back fence shows how high the water reached in his yard.
The “upstream” side of Vera’s car, parked in his driveway during the flood. The wheel was facing the new development.
Vera points to the waterline on his kitchen cabinets. He spent five hours vacuuming water from the recessed hardwood floor in his kitchen.
Newly installed hardwood floors will need to be replaced.
Culvert at the end of the ditch reportedly backed water up. Water then moved toward upper right, the Vera home.

Within the next day or two, I hope to edit the drone footage with the talented Jim Zura who shot it. As I post this, I hear thunder outside from yet another round of storms. And I’m praying for the people of Elm Grove.

Posted by Bob Rehak on 5/9/19

618 Days since Hurricane Harvey

There’s a Developer Born Every Minute!

This morning, local videographer Jim Zura took his drone down to River Grove Park and photographed the Romerica property flooding for the seventh time in 14 months. It proves that there’s a developer born every minute!

To see Jim Zura’s drone video, click here.

The history of this land involves half a dozen different developers, each with big dreams, determined to get rich in that promised land between buying low and selling high. Ultimately, though, they end up selling to another starry-eyed developer after reality sets in.

For the most recent owner, Romerica Investments, that reality includes waking up to find that your property was under 22 feet of water during Harvey and floods repeatedly.

Also, in the “Gee-what-were-they-thinking-department,” you would have to include the fact that FEMA will soon reclassify the property in the floodway – before Romerica can obtain a permit from the Army Corps.

At what point to you admit to yourself that there is no way out?

Investing $5 billion in a floodway that carries 240,000 cubic feet per second! That’s Brooklyn-Bridge smart. Expecting 15,000 condo buyers to wade into the wacky dream with you? It would be easier to sell high rises at the end of an airport runway.

Might be time to cut your losses, Mr. Haddad. Just sayin’. All those high priced consultants will be happy to keep selling you hope as long as you’re paying them.

Posted by Bob Rehak on 5/8/19

617 Days since Hurricane Harvey

The thoughts expressed in this post are my opinions on matters of public policy and safety. They are protected by the First Amendment of the U.S. Constitution and the Anti-SLAPP statute of the Great State of Texas.

Clear Debris from Drains Before Next Wave of Rain Hits

Multiple news outlets are reporting that 400 homes flooded in the Kingwood area yesterday due to street and ditch flooding. Street flooding happens when the RAINFALL RATE exceeds the DRAINAGE CAPACITY of storm sewers. Water backs up into streets where it waits until the input and output balance. But when drains are blocked by downed tree limbs, yard waste, and other debris water backs up even higher into homes as it did last night.

Flooded home in Elm Grove

Please Help Clear Drains of Debris

Matt Zeve, Deputy Executive Director of Harris County Flood Control, reminds everyone that, “All citizens have a responsibility to keep their storm sewer inlets and roadside ditches clear of yard debris, trash, and other items that can cause clogging. The City of Houston and Flood Control are not able to police every single ditch and storm sewer inlet out there. We are all in this together.”

It could be your house that you save from flooding in the next rain.

How to Report Debris in Ditches

Some debris will be beyond the capability of homeowners to clear, especially in creeks and drainage ditches. For instance, see the picture below.

Tree down in Ben’s Branch. Photo taken from Tree Lane just east of Bear Branch Elementary.

Clearing such blockages will take professionals with chain saws and lifting equipment.

Call Harris County Flood Control at 713-684-4197 to report these types of issues.  Please make sure you know the closest cross streets.

You can also contact flood control via the web.

City of Houston Also Requests Your Help in Clearing Drains

Dave Martin, Houston City Council Member said, “This morning, I asked the Mayor, and he agreed, like we did in December 2017 AFTER Harvey…in those flooded/affected areas, we will send cameras down the storm drains and sewers to see if there is any blockage. If there is, we will remediate.”

Martin continued, “We are also ‘re-engineering’ our ‘Adopt a Drain’ program which calls for our Residents to adopt a drain/storm sewer in their neighborhood, and periodically check the siltation/trash/clogging/buildup in THEIR drain.

More Rain on Way

At the start of the week, the National Weather Service forecasted 7-10 inches of rain for the week. Yesterday, when a storm stalled over Kingwood, we got that much in one afternoon. And more IS on the way.

NOAA Radar as of noon on Wednesday, 5/8/19.

Today’s Forecast from Flood Control

The next upper level disturbance is already moving into central Texas. The majority of the heavy rainfall should stay to our north today, but our area could certainly see rainfall this afternoon that could result in additional flooding, especially if it falls on areas that were hard hit on Tuesday.

Additionally there is a higher severe weather risk this afternoon especially north of I-10 where large hail, damaging winds, and isolated tornadoes will be possible.

Forecast Thursday-Saturday: 

Several complexes and clusters of storms can be expected through the period each capable of dropping multiple inches of rainfall. Expect a moderate risk of flash flooding both Thursday and Friday. 

Additional Rainfall Amounts 

Widespread rainfall of 5-8 inches with isolated totals of 9-12 inches will be possible today through Saturday. While these totals are spread over a 3 day period, much of what falls will likely fall in bursts with each cluster of storms. Air mass remains very much capable of intense rainfall rates as observed yesterday. Hourly rainfall rates of 2-4 inches per hour will remain possible which will quickly result in urban flash flooding and significant street flooding.

River Report

Grounds are saturated and any additional rainfall…especially in areas that saw heavy rains on Tuesday…is going to run directly into creek, bayous, and rivers that area already highly elevated. If the rainfall forecast does indeed verify, flooding of creeks and bayous in Harris County is certainly possible along with house flooding.

While several creeks and bayous are elevated, all are receding at this time including both the East and West Forks of the San Jacinto River.  

Flash Flood Outlook For Wednesday 

Flash Flood Outlook For Wednesday 

Posted by Bob Rehak on 5/8/19 at noon

617 Days since Hurricane Harvey