Analysis shows need for detention ponds, bridge replacements to mitigate League City flooding

(Courtesy city of League City)
(Courtesy city of League City)

(Courtesy city of League City)

A consultant recommends League City replace bridges, create dozens of acres of detention ponds, upgrade storm sewers and other work to help mitigate flooding in the smaller watersheds that feed into Clear Creek.

As part of its 2019 bond program, League City hired LJA Engineering to do 2D analysis of the city’s watersheds so the city could create a comprehensive drainage plan. According to the city’s website, the budget for developing the plan, along with a flood gauge warning system, is $800,000.

LJA representative John Grounds said the goal of the study was to define the city’s existing drainage infrastructure and identify future problems and how to solve them. LJA used previous studies and Atlas 14 rainfall data to do their modeling, Grounds said.

Most, if not all, of the proposed solutions included creating detention ponds along ditches.

For instance, Corum Ditch had channel improvements completed in 2011, but they are not enough to convey water during large storms. Grounds said dozens of acres of detention ponds need to be created, the channel needs to be modified, and the storm sewer needs to be upgraded to prevent flooding in the ditch.

Robinson Bayou needs four detention ponds, and two nearby bridges need to be replaced because the existing ones further exasperate flooding. These improvements will result in water flowing more directly into Clear Creek, Grounds said.

Jarbo Bayou is highly affected by tides, but the 2D modeling did not include a study of storm surge flooding. Still, analysis shows the area needs a couple detention ponds and an increase to the storm sewer’s capacity, Grounds said.

Magnolia Bayou contains mostly undeveloped land to the west. As such, it is hard to predict what future development might do, Grounds said.

“The drainage in that area—it’s not very well defined,” he said. “The channel doesn’t really know where it wants to be yet.”

That said, detention ponds would help, and any upstream development should not release water to the downstream channel; by doing that, the need for ponds might be mitigated, Grounds said.

Mayor Pro Tem Hank Dugie said this study should be forwarded to the Houston-Galveston Area Council, which is the entity by which League City could apply for grants to fix these problems.

“H-GAC definitely needs to have this,” Dugie said, implying City Council should consider passing a resolution making H-GAC aware of the study.

Additionally, the Texas Department of Transportation would benefit from knowing which bridges are working against the city’s drainage efforts, Dugie said.
By Jake Magee
Jake Magee has been a print journalist for several years, covering numerous beats including city government, education, business and more. Starting off at a daily newspaper in southern Wisconsin, Magee covered two small cities before being promoted to covering city government in the heart of newspaper's coverage area. He moved to Houston in mid-2018 to be the editor for and launch the Bay Area edition of Community Impact Newspaper.



ERCOT's instability has fueled interest in alternative sources of energy, with one solar nonprofit seeing interest increase across Texas in recent months. (Courtesy Adobe Stock)
Hot spots: Solar energy interest sparks in Clear Lake

Residents of 50 homes in Clear Lake and the surrounding area began forming a co-op in spring 2020 through Solar United Neighbors, a national nonprofit focused on supporting the growth of residential solar energy by informing consumers.

Peter Lake (left), chair of the Public Utility Commission of Texas, and Brad Jones, interim president and CEO of the Electric Reliability Council of Texas, provided an update on state regulators' electric grid redesign efforts in Austin on July 22. (Ben Thompson/Community Impact Newspaper)
Regulators: Texas electric grid prepared for potentially record-breaking demand next week; 'once-in-a-generation reforms' underway

The heads of the agencies in charge of the Texas electric grid met in Austin on July 22 to provide updates on their grid reform efforts.

port of houston
Port of Houston sets new diversity standards for business contracts

The port is joining a growing number of local and regional bodies interested in updating policies to increase participation from minority and women-owned businesses.

Harris County Judge Lina Hidalgo is pleading with residents to be more vigilant, asking all residents to start wearing masks again in indoor settings and asking those who are vaccinated to urge their friends who are not to get the shot. (Screenshot Courtesy Facebook)
Harris County raises coronavirus threat level as Hidalgo asks all residents to mask up indoors

Although those who are vaccinated are very unlikely to end up in the hospital, officials said wearing masks in certain situations could help reduce transmissions to the more susceptible unvaccinated.

(Community Impact staff)
DATA: Bay Area homes sold quicker, at higher prices in 2021 compared to prior year

Local real estate data shows an active market for June 2020-May 2021 compared to June 2019-May 2020.

Memorial Hermann has locations throughout the Greater Houston area, including Memorial Hermann The Woodlands Medical Center. (Courtesy Memorial Hermann)
Memorial Hermann visiting policies change as COVID-19 cases rise

As of July 21, Memorial Hermann has changed its visitor policy in light of a recent increase in COVID-19 cases and hospitalizations in the Greater Houston area.

Houston launches revamped 3-1-1 system

City staff have been in the process of updating the system over the last nine months.

Houston unemployment is above state and national levels, while home sales in the region continue to be strong, according to a July 21 economic update from the Greater Houston Partnership. (Emma Whalen/Community Impact Newspaper)
Unemployment, strong housing sales mark 2021 Houston economy, Greater Houston Partnership says

While Houston job recovery lags due to the pandemic, area home sales are strong, according to the Greater Houston Partnership.

In a late-night amendment addition, Harris County Commissioners Court denied an original resolution aiming to increase restrictions on nonmonetary pretrial release bonds in a split vote after hearing over two hours of public testimony July 20 for and against the resolution. The amended resolution, which was approved in a second split vote, favors focusing on criminal court backlogs and funding alternative public safety solutions. (Courtesy Pexels)
After hours of debate, Harris County commissioners oppose resolution restricting felony nonmonetary pretrial release bonds

In a late-night amendment addition, Harris County Commissioners Court denied an original resolution aiming to increase restrictions on non-monetary pretrial release bonds in a split vote after hearing over two hours of public testimony July 20 for and against the resolution.

Within a few months, League City developers may be paying more for roadway projects, lessening the burden on taxpayers. (Courtesy Adobe Stock)
City Council to consider raising League City's roadway impact fees

Depending on a City Council vote this August, these fees could increase this summer.

The restaurant serves a variety of Indian appetizers, entrees and sweets. (Courtesy Adobe Stock)
A1 Choice Indian Cuisine opens in Cy-Fair; Torchy's Richmond taco shop coming this week and more Houston-area news

Read the latest business and community news from the Greater Houston area, including a Ross Dress For Less store opening in Cy-Fair.

With cases, testing positivity and hospitalizations on the rise, health care experts say a fourth wave of the coronavirus is starting in Houston. (Courtesy Adobe Stock)
The fourth wave: Medical Center officials talk masks, vaccines as delta variant cases pick up

The key difference between this wave and those that preceded it is who is at risk, experts say, citing data showing almost all new coronavirus deaths are affecting the unvaccinated.