Atlas 14 - HoustonNewMedia.org

11/4/2025 – FEMA floodplain maps contradict a claim made by Scarborough Development/San Jacinto Preserve in a presentation made to the City of Houston and Harris County officials on 10/29/25. The developer recently bought 5,316 acres, mostly in the floodplains and floodways of Spring and Cypress Creeks, and the San Jacinto West Fork. The land lies […]

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October 31, 2024 Reduce Flooding

Rain in Spain and Sad, Sorry State of Climate-Change Speculation

10/31/24 – An extreme rainfall event near Valencia in southern Spain on Tuesday this week fueled a spate of hasty climate change stories. But was that the cause of the flooding? A year’s worth of rain fell in a day. The area has an average annual rainfall of 17.87 inches. October is their rainiest month with […]

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January 27, 2024 Reduce Flooding

How Bad Was That Storm?

A week of rain has ended. Flood crests are passing. And many are asking, “How bad was that storm?” The short answer to the question: depending on where you live in the region, you got a 1- to 5-year rainfall. Why is that? And how do you determine it? It’s simple. Let’s start with the […]

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September 5, 2023 Reduce Flooding

Here Come New Precipitation-Frequency Estimates…Again

NOAA’s new Atlas 15 precipitation-frequency estimates will soon replace recently introduced Atlas 14 estimates – even before the Atlas 14 estimates have been fully adopted and integrated into local regulations. About Precipitation-Frequency Estimates Engineers use precipitation-frequency estimates to design, plan and manage infrastructure under Federal, State and local regulations. For instance, to ensure homes are […]

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June 26, 2023 Reduce Flooding

New Data Suggests Houston’s Expected 100-Year Flood Is More Likely to Happen Every 8 to 23 Years

First Street Foundation, a non-profit risk-research group, estimates (based on what it says are “well known” Atlas-14 flaws) that a so-called 100-year flood event in Houston could likely happen every 8 to 23 years. NOAA’s Atlas 14, a massive, years-long effort, which hasn’t even been fully implemented yet, may already be seriously out of date […]

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August 28, 2022 Reduce Flooding

MoCo Updating Drainage Criteria Manual, Subdivision Rules

Montgomery County (MoCo) Commissioners voted on 8/23/22 to update the County’s Drainage Criteria Manual and its Subdivision Rules and Regulations. Precinct 2 Commissioner Charlie Riley made the motion (item 16.C on the 8/23/22 Commissioners Court agenda). See the discussion in the MoCo Commissioner’s Court video. Select Item 16. The discussion starts at 3:12. The previous […]

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August 13, 2022 Reduce Flooding

Giving Thanks to the Women and Men of Harris County Flood Control

A reader who visited a trade show recently in Las Vegas sent me several links to news stories about flash flooding there. 1.24 inches of rain caused widespread flooding, killed at least two people, and resulted in dozens of high water rescues! See also: https://www.ktnv.com/news/nws-issues-another-flash-flood-warning-for-some-parts-of-northeastern-las-vegas-valley https://www.whas11.com/article/news/nation-world/las-vegas-flooding/507-ca847b48-9abc-44be-a0ee-07109edc011b https://www.nbcnews.com/news/weather/monsoonal-rains-flood-streets-casinos-las-vegas-rcna40794 His comment: “Imagine if those types of videos […]

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August 13, 2022 Reduce Flooding

Giving Thanks to the Women and Men of Harris County Flood Control

The post Giving Thanks to the Women and Men of Harris County Flood Control appeared first on Reduce Flooding.

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January 10, 2022 Reduce Flooding

Despite Heavy Weekend Rains, Most Area Channels and Streams Stayed Within Banks

Despite heavy weekend rains, with a few exceptions, streams and channels stayed within their banks. There are several possible explanations. Soil was dry before the rains. Rainfall came in two waves separated by several hours, allowing the first peak to start working its way through the system before the second hit. The amount of rainfall […]

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July 19, 2021 Reduce Flooding

Commissioners Vote Tuesday on Contract for Woodridge Village Detention Pond Excavation

Tuesday, 7.20.21, Harris County Commissioners will vote on a contract with Sprint Sand & Clay for excavation of a Woodridge Village detention basin. Item #21-3394 on the agenda is only for $1000, but it gives the contractor the right to enter the site and begin removing up to 500,000 cubic yards of dirt (at no […]

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