No adverse impact - HoustonNewMedia.org

5/14/25 – This morning, I gave a presentation that compared the pace of downstream flood mitigation with the pace of upstream development. Are we gaining or losing ground in the Lake Houston Area? Presentation Connects Many Dots Answering that question requires connecting many dots. Here are the slides from the presentation with my narrative. Offsetting […]

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April 16, 2024 Reduce Flooding

Royal Pines Construction Begins

Royal Pines, a new, 150-acre development in Porter at the north end of West Lake Houston Parkway (WLHP) is mobilizing for construction. The developer began clearing and grading the site in April 2022. By September 2022, they finished. And by October 2022, they were flooding neighbors. For the past 18 months, they’ve been working on […]

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January 23, 2022 Reduce Flooding

New 1700-Acre MoCo Development Claims “No Adverse Impact,” But Doesn’t Study Other Areas

A new 1700-acre development called Madera at FM1314 and SH242 claims it will have “no adverse impact” on surrounding areas. However, to determine this, the authors of the drainage impact analysis used a controversial technique permitted by Montgomery County drainage regulations. It’s called “hydrologic timing.” The technique doesn’t take into account drainage from other developments […]

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January 20, 2022 Reduce Flooding

What Does “No Adverse Impact” Really Mean in Drainage Studies?

New developments in many jurisdictions must demonstrate “No Adverse Impact” (NAI) in drainage studies before they can get construction permits. City and county engineers want to know the development won’t harm others before they approve plans. But what does “No Adverse Impact” really mean? It depends on the jurisdiction. Meaning Varies Most jurisdictions require that […]

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