Tag Archive for: year in review

Year in Review: Looking Back at 2023

Looking back at 2023, we got lucky. A lack of extreme rainfall masked a slowdown of flood-mitigation spending and massive clearcutting of wetlands and floodplains. Had we been hit by a hurricane instead of a drought, who knows what would have happened.

Have we lost our sense of urgency about flood mitigation? Did the drought lull us into complacency? If so, will that contribute to future flooding? Let’s look more closely at what did and didn’t happen in 2023.

No Widespread Flooding or Flood Damage

To my knowledge, no floods caused widespread damage in the Houston area this year. That’s a tribute to three things: past flood-mitigation efforts, drought, and the absence of tropical activity.

At the end of the third quarter, HCFCD and its partners had spent almost $3.8 billion on flood mitigation since 2000 and $1.8 billion since Harvey. That has helped reduce the risk of flooding – especially in lower-income watersheds that frequently flooded. That’s where most of flood-mitigation money has been concentrated.

But flood-mitigation spending alone didn’t account for the absence of wide scale flooding in the Houston area in 2023. Mother Nature “helped,” if you can call a drought helpful.

Much of the Houston region suffered through moderate to severe drought for most of 2023. According to the U.S. Drought Monitor, much of Harris County is still rated “abnormally dry.” And most surrounding counties are still in moderate drought.

Source: U.S. Drought Monitor at end of 2023

How much rain did we get? Through December 29, we received 41.75 inches – 10 inches below our normal 51.73 inches. So, despite recent rains, we received 20% less than normal for the year.

Source: National Weather Service

Finally, no tropical storms or hurricanes made landfall in the Houston Area this year. Despite an above-normal tropical season, the return of El Niño, and warmer-than-normal sea-surface temperatures in the Gulf, Mother Nature steered tropical activity away from Houston.

Slowdown in Flood-Mitigation Spending

Drier-than-normal weather for most of the year created ideal conditions for construction of flood-mitigation projects. However, flood-mitigation spending fell to about half its peak during 2020.

HCFCD and Partner spending by watershed
Source: HCFCD Data from FOIA Request through 3Q2023 with fourth quarter estimated.

Harris County Flood Control District provided no official explanation for the slowdown. However, various people familiar with HCFCD operations have cited:

The urgency that fueled flood mitigation after Harvey seems to have waned over time.

Availability of cash is not the problem. HCFCD received:

  • $2.5 billion from the 2018 flood bond.
  • $850 million from the Texas General Land Office and the U.S. Department of Housing and Urban Development.

That brought the total contributions by partners up to another $2.5 billion. Yet HCFCD has spent only about a third of that money – $1.8 billion out of $5 billion total.

Projects at Risk

In the meantime, 15-20% inflation in construction costs could force HCFCD to eliminate $1 billion worth of projects from the original bond list. And projects at the end of the equity priority list in affluent areas are the most likely to get the axe. HCFCD is re-evaluating them all.

Every day no work is being done is a day wasted. And a day that people have to live with higher flood risk.

Relentless Development in Floodplains and Wetlands

Meanwhile, the clearing of land in the upper San Jacinto River Basin has not slowed. Developers cleared thousands of acres in 2023.

We saw how dangerous that could be after Perry Homes cleared 268 acres in Woodridge Village without building sufficient stormwater detention capabilities. Areas downstream in Kingwood’s Elm Grove Village that didn’t flood after 50 inches of rain from Harvey in 2017 flooded after a 5-inch rain on May 7, 2019.

The giant Colony Ridge development in Liberty County virtually doubled in size during the last two years. By the end of 2023, it was at least 50% bigger than Manhattan. The developers:

I took the following six shots over Colony Ridge in 2023. They show small portions of the developer’s clearing activity, but represent hundreds of other shots too numerous to include here.

Some call this progress. But Colony Ridge is now the subject of a Federal lawsuit by the U.S. Department of Justice and the Consumer Financial Protection Bureau.

Other Developments Leave Land Exposed to Erosion

Colony Ridge isn’t the only development in the Lake Houston Area that leaves land exposed to erosion. Here are several others.

Los Pinos
Los Pinos photographed in March 2023. First part of a planned 4,000 acre development.
Royal Pines in Porter on White Oak Creek flooded neighbors four times in two months.
Northpark South at McClellan Sorters Road (bottom L to R) at Northpark Drive (Center) was under 8 feet of water during Harvey. It contained wetlands and will drain through sand mines to the San Jacinto West Fork in the background.

Saint Tropez in Huffman at FM2100 and Meyer Road.

Madera will eliminate wetlands but claims it will have no adverse impact.
Madera at FM1314 and SH242 will eliminate wetlands but claims it will have no adverse impact. Photographed Jan. 2022.
Evergreen near SH242 and FM1314.

I could cite dozens of additional examples like these. When rains wash through these sites, they pick up sediment and carry it downstream.

Sediment Deposition

Eroded sediment from these clearing operations washes downstream. It drops out of suspension where the water slows as it reaches Lake Houston.

Where Spring Creek (left) joins San Jacinto West Fork (right) at the Harris Montgomery County line. Photographed from over I-69 looking west.

The result: sand bars that reduce the conveyance of the river, forcing water out of the banks and into people’s homes.

Sand bar on West Fork of the San Jacinto at Lake Houston after Harvey reduced river’s conveyance. Army Corps dredged the blockage after thousands of homes and businesses flooded upstream during Harvey.

Good News, Bad News

The good news: many blockages like the one above have been removed through dredging by the Army Corps and City.

The bad news: Many boaters have written in the last few months, complaining about how shallow the rivers are once again becoming due to unchecked sedimentation.

While I am ecstatic about another year without a flood, I hope we do not become complacent about preventing activities that contribute to flooding.

We need to establish and enforce best management practices that reduce sedimentation that clogs our rivers.

Flood Gate Project Goes Into 2024 with Momentum

So as not to finish the year on a down note, I would like to mention the project to add more flood gates to the Lake Houston dam.

In 2023, Houston Mayor Pro Tem Dave Martin and Chief Recover Officer Stephen Costello accomplished an extraordinary “lift.” They convinced FEMA to include social benefits in their Benefit/Cost Ratio calculation. This helped them achieve a benefit/cost ratio greater than one, meaning benefits exceeded costs for the gates.

Then, they rallied local, state, and federal officials to fund the project so it could move forward. While $20 million of the $170+ million for the project comes from the 2018 flood bond, it will be hard for certain Harris County Commissioners to block it now that everyone else has done their parts.

As a result, the project goes into 2024 with some momentum and a new mayor who is sensitive to flooding concerns in the Lake Houston Area.

Posted by Bob Rehak on 12/31/23

2315 Days since Hurricane Harvey

2019 Weather: Year In Review

Jeff Lindner, Harris County Flood Control District Meteorologist compiled this “Year in Review” summary. My thanks to Mr. Lindner and all the other folks at Harris County Flood Control who work so hard to make us aware of and protect us from extreme weather. On average, we had an extreme-weather event somewhere in the county every other week during the year. Some will be tough to forget.

Only 25 Days of Extreme Weather in 2019

January 1: Widespread dense fog with frequent visibilities under .25 of a mile and several locations recording zero visibility develop just after midnight and lasted into the mid morning hours. Air quality sensors recorded extremely unhealthy levels during this episode due to fireworks smoke being trapped near the surface.

January 19: severe thunderstorms produced wind damage in Wharton and in portions of Galveston County. 

January 23: back edge of ending rainfall mixed with and changed over to light snow/sleet. Some very light accumulation on rooftops.

February 5: Galveston experienced over 24 hours of sea fog.

April 6: several reports of baseball size hail over Houston, Madison, and Brazos Counties

April 7: Large bow echo produced wind damage over much of SE TX. 62mph wind recorded on Galveston Is and 63mph in Brazos County. EF 1 tornado touchdown in Pasadena destroyed one building. Strong winds overturned several travel trailers at Crystal Beach on Bolivar Peninsula.

April 13: EF 3 tornado strikes Weches in Houston County killing 1 person with a path length of 15 miles and width of 800 yards. EF 3 tornado touches down in Lovelady, TX in Houston County with a path length of 3.9 miles and width of 100 yards. Damage was significant along the tracks of both tornadoes. These tornadoes were part of a larger outbreak that included the Hearne, TX and Franklin, TX tornadoes. Dime to golfball size hail was reported from Bunker Hill to Spring Branch.  

April 24: Tornado touches down 4 miles east of Bryan, TX producing damage to 1 house and 4 commercial buildings. The tornado was rated EF 2 at maximum intensity.

May 3: EF 2 Tornado strikes LaGrange, TX. EF 0 Tornado in Eagle Lake, TX, EF 0 tornado near Tomball TX. 62mph wind gust at Eagle Point.

First Large Rain in Lake Houston Area

May 7: 10-12 inches of rainfall across portions of Kingwood and Fort Bend Counties leads to flash flooding. Over 400 homes were flooded in both areas.

May 9: 4-6 inches of rainfall in a short period of time across central Harris County led to flash flooding. Baseball size hail damaged several properties on the north side of Downtown Houston

June 5: 9.25 inches of rainfall occurred at Lane City and 7-8 inches in western Fort Bend County. US 59 in both directions was inundated at Kendleton, TX and homes flooded. Flash flooding reported in Wharton, Boling, Bay City and Pledger. 

June 6: 61mph wind gust recorded at San Luis Pass TCOON site. 18-wheeler overturned on I-10 around Columbus due to strong winds.

June 16: 64mph wind gust recorded at Bryan, TX. Glass door blown out of a building on TAMU campus.

June 23: Heat fatality. Child died from being left in a hot car on Bolivar Peninsula.

June 24: 58mph wind gust recorded at Crab lake WeatherFlow site. Lightning strikes caused 2 house fires in western Harris County.

June 25: 70mph wind gust reported NNE of Eagle Point over Galveston Bay.

June 29: 61mph wind gust reported at Galveston North Jetty. Large portions of Bolivar Peninsula were without power.

July 13: Hurricane Barry makes landfall along the south-central Louisiana coast. Impacts to SE TX included elevated seas and tides and a few showers in the western side of the circulation

July 23: a rare summer cool front dropped lows into the 60’s

August 8: the overnight low at Galveston failed to fall below 86 degrees and an afternoon heat index of 117 was recorded requiring a rare Excessive Heat Warning for the extreme coastal areas of SE TX.

August 14: 3 construction workers in Iowa Colony were injured when the house they were working on was struck by lightning. Lightning also struck an apartment complex off Almeda-Genoa Rd resulting in an attic fire that destroyed 1 unit.

The Big One for Everyone

September 17-19: Tropical Storm Imelda makes landfall over Brazoria County and meanders northward across SE TX producing tremendous rainfall and flash flooding. Early on the morning of the 19th an extensive band of heavy thunderstorms producing extreme amounts of rainfall developed from Jefferson County to east-central Montgomery County. Rainfall rates under this band frequently exceeded 4.0-5.0 inches per hour with a few locations receiving over 6.0 inches per hour. This band of excessive rainfall drifted south-southwest in Harris County by mid morning. 

31.0 inches of rainfall was recorded in just 12 hours at Fannett, TX near the Chambers/Jefferson County line with a storm total of 44.29 inches of rainfall at that site. The 44.29 inches recorded at Fannett, TX makes TS Imelda the 4th wettest tropical cyclone in Texas history and the 5th wettest in US history dating back to 1851. A 48-hour rainfall total of 29.1 inches was recorded in northeast Harris County near Huffman with 30.4 inches recorded in southeast Montgomery County near Plum Grove. 6.5 inches of rain fell in just 1 hour over the Aldine area of Harris County. A total of 3,990 homes were flooded in Harris County alone with an additional several thousand flooded in Montgomery, Liberty, Chambers, and Jefferson Counties.  

Posted by Bob Rehak on December 31, 2019

854 since Hurricane Harvey and 103 since Imelda