Dixon Branch

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Project Summary:

***PROJECT UPDATE***

The next Public Meeting for the Dixon Branch project will be held Thursday, April 23rd at 7:00 pm at the Central Lutheran Church (1000 Easton). At this final meeting we will be discussing the recommended Alternative and the next phase of the project. Please see the meeting flyer and comment form for more information. If you have comments on this project, please submit them on or before April 22nd for consideration.

Freese and Nichols, Inc. is currently studying Dixon Branch, a natural stream that runs through the Old Lake Highlands area of Dallas and drains to the east side of White Rock Lake. Currently over 130 homes reside in the FEMA floodplain for Dixon Branch. The objective of this project is to recommend improvements to alleviate the existing and future flooding in this watershed. The flooding problems are generally located between Peavy and Easton Roads. Click here to learn more about the Dixon Branch Flood Study and the existing flooding in this watershed.

Many flood control solutions have been considered to alleviate the flooding, including diversion, detention, channel improvements, and non-structural controls. FNI developed and presented six (6) Alternatives at the previous Public Meeting in November of 2008. Based on public opinion, as well as construction cost and environmental impacts, the following Alternatives are equally ranked.

(1) DIVERSION TUNNEL - This alternative includes 7,000 linear feet of a deep tunnel that conveys flood waters from Dixon Branch to White Rock Lake, mostly under Northcliff Drive. Deep tunnels are constructed with special equipment that minimizes surface disruption along the alignment. The tunnel requires an intake and outfall, which would require surface disruption of approximately 1 acre at each location.

(2) DIVERSION TUNNEL + Voluntary Purchase - The diversion tunnel in this alternative is similar to (1) but is only 4,500 linear feet, and mostly under Lake Highlands Boulevard. The alternative also includes the purchase of approximately seven (7) flooded structures. This would be a one-time voluntary offer from the City to purchase the structures, land, and associated improvements for a fair market value.

(4) NON-STRUCTURAL CONTROL - A total of 132 residences may be subject to flooding in the future along Dixon Branch. This alternative includes the purchase of these homes. Again, this would be a one-time voluntary offer from the City to purchase the structures and land. Nothing is done to the existing channel. Please see the FAQ for more information about Voluntary Purchase.

At the last Public Meeting (November 2008) the concept of a Homeowner Steering Committee was introduced as a possibility. Approximately half of the comment forms received indicated a positive response to this concept. The Committee was not in Freese and Nichols' original contract. Based on a limited project budget and only 50% approval, we are unable to move forward with the Committee at this time.

Last Updated: April 13, 2009

For more information on this project, use the links to the left. You can provide input into this project by using the Public Input form.