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The Texas Commission on Environmental Quality (TCEQ) is holding an MS4 Stakeholder meeting Tuesday, March 21 to begin efforts related to the TPDES Phase II MS4 General Permit renewal due December 2018. The meeting will take place at 1:30 p.m. at TCEQ headquarters located at 12100 Park 35 Circle; Building E; Conference Room 201S in Austin, Texas. The meeting will also be broadcast online at

Cities, counties, municipal utility districts,...

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First in a series

Newly published rainfall data could have significant effects for dam owners in Texas, including cities, counties, water districts and river authorities.

In January, the Texas Commission on Environmental Quality (TCEQ) released a new probable maximum precipitation (PMP) study for the entire state, plus adjacent regions that drain into Texas. This study updated the raw precipitation data on which dam analyses and studies are based. View the final...

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In light of recent flooding incidents at dams across the country, dam safety is now on the minds of many Americans. Many dam owners are receiving questions from constituents wondering about their nearby dams.

If your organization owns a dam, here are three questions you should be ready to answer:

  1. Is our dam safe?
  2. If a flood happened here, would our dam withstand it?
  3. What would we do if our dam had an emergency?

If you don’t know the answers, we can help. Here are the best practices we recommend:

  1. Have your dam regularly inspected
  2. ...

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We are pleased to announce that Kelly Dillard was selected as Engineer of the Year by the Fort Worth Chapter of the Texas Society of Professional Engineers (TSPE). Kelly Dillard, P.E., CFM, ENV SP, is a firm Principal and Practice Leader of the Stormwater Management Group. She also leads the Freese and Nichols Sustainability Committee. Kelly was nominated...

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In an effort to be more transparent with the public, the Environmental Protection Agency (EPA) launched the Clean Water Act Jurisdictional Determination Website. This website allows the public to search for jurisdictional determinations (JD) that have been approved by the U.S. Army Corps of Engineers (USACE) and the EPA since August 28, 2015 using an interactive mapping tool and database. The tool also allows the user to filter the data by geographic location or USACE District and provides a link to the USACE’s Other Regulated Material (...

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Five Freese and Nichols stormwater engineers have recently become Certified Floodplain Managers: Boris Minot and David Rivera in our Dallas office; Keith Byrne and Mark Pauls in our Fort Worth office; and Shelby Wiedrich in our Austin office. Each passed an exam to receive the certification, which is issued by the Texas Floodplain Management Association​.


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Co-authored by Boris Minot.

Freese and Nichols (FNI), partnered with Hayden Consultants (HCI), held a two-hour presentation at the Environmental Protection Agency (EPA) Region 6 Conference in Oklahoma City on the development of Low Impact Development (LID) standard details for the City of Dallas. The first hour of the presentation was dedicated to familiarizing the audience with the concept of low impact development and presented the LID standard details developed for the City. Further information concerning these details can be found in the previous article ...

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The USACE has released a new version of HEC-RAS that supersedes versions 5.0.1 and 5.0.2 (which was withdrawn due to major bugs). The new version fixes several bugs and includes new and improved features like culvert inlet/ outlet control, using 2D flow equations at lateral structures, flow and volume time series output for profile lines in RAS Mapper, and profile line point and tick marks. For more info on the new version and to download the model, check out the links below.

Release Notes:...

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