100-Year Floodplains Doubling in Size, But HCFCD Won’t Release New Maps

11/10/25 – The Texas Water Development Board’s San Jacinto Regional Flood Planning Group will meet on Thursday, November 13, to consider adopting a technical memorandum that shows the river basin’s 100-year floodplains more than doubling in size.

From Page 16 of Draft 2028 Region 6 Flood Plan. 10-year floodplains were not previously mapped.

However, even though the group acknowledges the superiority of Harris County Flood Control District’s (HCFCD) MAAPnext floodplain models, Harris County refuses to release updated flood maps. As a consequence, hundreds of pages of maps in the 634-page document show nothing for Harris County flood risk. Why?

Example of redacted map from page 98.

You can find the answer at the top of Page 14. “MAAPnext mapping information has not yet been made available to the public and will not be released to the public by HCFCD until late 2025 or early 2026. Given the sensitivity of this information…”

“… HCFCD has asked that MAAPnext mapping information not be shared publicly so that they can continue to carefully and thoughtfully control the roll out of this information to Harris County residents.”

Page 14, Draft Region 6 Technical Memorandum dated November 2025

HCFCD did not respond to a request for explanation or comment.

Redacted Information Exposes Public to Unnecessary Risk

This isn’t national-defense information. It’s public-safety information that you need to protect your family and life savings.

The County has been on the verge of releasing this information since 2021. But the County has postponed the release multiple times without a good explanation.

MAAPnext FEMA timeline for flood map release explains uncertainty
Screen Capture from MAAPnext.org on July 4, 2021

I have little faith in the late 2025/early 2026 release date. They have simply postponed it too many times. And in fact, a quick check of the MAAPnext website shows they’ve already delayed release again. Now they predict the END of 2026.

Flood map update schedule as of August 2025

HCFCD blames delays on FEMA. But HCFCD doesn’t even need FEMA’s permission to release what they now have.

FEMA’s authority extends to flood insurance maps. But other counties release flood-map updates before FEMA for their own regulatory and public safety purposes. And that’s how this information could help.

Why We Need This Information Now

People need this data to make important decisions, such as:

  1. Should I buy this house?
  2. What is the real flooding risk at my house?
  3. Should I buy flood insurance?
  4. Can I afford flood insurance on top of my mortgage?
  5. Is my parent’s house at risk? My children’s?
  6. Is the assisted living center where my relatives live at risk for flooding?

Would you want to make one of these decisions knowing the government deliberately withheld information that could save a loved one’s life or your life savings? These are life-altering decisions affecting potentially hundreds of thousands of people.

A Houston Chronicle investigation found that 65,000 homes have been built in floodplains since Harvey – a number based on old pre-Atlas-14 flood maps.

The Region 6 Technical Report suggests that number may be radically understated. If floodplains cover twice as many square miles, it stands to reason more people will be affected.

Harris County has updated maps.

Not releasing the maps is a public-safety scandal.

Bob Rehak

Even worse, not explaining why the public can’t see information that could save lives and life savings is an even bigger scandal.

Meeting Information

The San Jacinto Regional Flood Planning Group (RFPG) will meet on Thursday, November 13, 2025, at 10:00 AM at the Harris-Galveston Subsidence District, 1660 W Bay Area Blvd, Friendswood, TX 77546, Board Room. 

The public may attend and address the RFPG in-person. Or as a courtesy you may virtually access the meeting “as technology permits.” The link for virtual access can be found at: sanjacintofloodplanning.org. And here is the agenda.

For the full report, see Draft 2028 Region 6 Flood Plan.

Posted by Bob Rehak on 11/10/2025

2995 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.

New Feature on ReduceFlooding.com

11/9/2025 – In a continuing effort to make ReduceFlooding.com as useful to readers as possible, I have added a new tab on the Reports Page. It’s called Real-Time Conditions and Floodplain Extents. The information on this page comes from national, state and local sources.

On one page, you can find numerous links to sources that can help you understand your flood risk when you are deciding whether to evacuate, fleeing from a flood, or buying a home.

For instance, want to see how high the water got during a particular flood in the Humble/Kingwood Area downstream from the US59 Bridge? Check out the interagency Flood Decision Support Toolbox below.

InFIRM decision support toolbox shows flood extent during Harvey in Humble Kingwod Area
From Flood Risk Management Decision Support Toolbox showing flood extent during Harvey at US59/West Fork.

Key Links

The new tab contains the following links all in one easy to remember place at the top of the Reports page.

Caution: Flood Maps May Not Yet Be Updated to Atlas 14

Please be aware of the date on maps that show the extent of floodplains. As of this writing, most pre-date NOAA’s Atlas 14 rainfall probability statistics. When FEMA officially updates maps, the floodplains will likely expand. For instance, Harris County Flood Control District advises people that 100-year floodplains could become 500-year floodplains when FEMA releases updated maps.

Additional weather related links can be found on the Links page under the Weather/Flood/Climate Tab.

Posted by Bob Rehak on 11/9/2025

2994 Days since Hurricane Harvey

Why We Need FEMA

11/8/25 – The Federal Emergency Management Agency (FEMA) has not just battled nature’s extremes this year. It has also battled political superstorms that have left both employees and citizens exposed and uncertain.

Disasters So Far in 2025

Despite a quieter than normal hurricane season so far this year, the U.S. has suffered:

Political Crosswinds Create Uncertainty

It’s not that FEMA was unresponsive in these events. It’s just that the agency has been hampered by political crosswinds and uncertainty. Early in the year, the Trump administration announced that it wanted to eliminate FEMA. But more recently, as disasters piled up, the administration has said it wants to restructure FEMA.

Still, during a government shutdown, attention to the FEMA Reform Act has been diverted, putting the agency and its people under strain. FEMA began the 2025 hurricane season with only about 12% of its incident-management workforce available for deployment, according to the Government Accountability Office.

According to Government Executive, the shortage is partly due to attrition, burnout from concurrent major disasters, and a backlog of missions. With the workforce so thin, FEMA’s ability to surge in response to large disasters is seriously compromised.

At the same time, FEMA has eliminated the Building Resilient Infrastructure and Communities (BRIC) grant program. The exact value of such grants is unknown. However estimates range from almost $900 million to $3.6 billion.

FEMA’s own budget could be cut, too. Though not yet fully enacted, the administration’s FY2026 budget proposal included a cut of about $646 million for FEMA from prior levels.

FEMA has also reportedly blocked or delayed nearly $10 billion in disaster-aid over concerns about undocumented migrant eligibility. 

And the administration has stopped automatically approving Hazard Mitigation Grant Funds for disasters that it declares.

Why Response at Federal Level Makes More Sense for Rare Disasters

The Administration has said it wants state and local governments to take on the cost for disaster recovery. State and local governments already provide much of the funding for minor disasters. But can they provide the funding needed for the type of major disasters mentioned above?

Shortly before the government shutdown started, the Wall Street Journal ran an illuminating article about the changing focus at FEMA.

“The city [St. Louis] doesn’t have the finances, institutional knowledge or equipment to rapidly respond to catastrophic disasters like the tornado that struck in May, which the city estimates caused $1.6 billion in damage,” it said.

Other observers responding to the WSJ article pointed out that “This is the exact reason why a robust FEMA is SO critical to our nation.”  

“Any one individual municipality, county or even state can go years to decades without a major disaster that they have to respond to,” continued the article in the Balanced Weather Blog.

“The idea that these levels of government are going to maintain the large, complex infrastructure needed to effectively and adequately respond to rare catastrophic events is not only nonsensical, it would be an incredibly poor use of taxpayer money,” it continued.

“Having a robust FEMA enables the ongoing maintenance of the needed disaster response infrastructure at a federal level which can then be deployed when and where it is needed.”

Economies of Scale

That makes sense to me. Would you ask each state to provide its own Army, Navy and Air Force? Of course not.

Certain tasks require economies of scale to match threats. That’s what FEMA provides. The ability to shift people and resources where they’re needed when they’re needed makes more economic sense than forcing each of 50 states to duplicate those resources for a disaster that may never strike in a lifetime.

That said, I believe it’s also incumbent on cities, counties and states to shoulder as much of the burden as they can.

Posted by Bob Rehak on 11/8/2025

2993 Days since Hurricane Harvey