City Council Meeting Date: August 18, 2026
Date: August 10, 2026
To: Erin Rinehart, City Manager
From: Jonathan Wheat, P.E., Director of Engineering
Shannon Hicks, P.E., Assistant City Manager
Title
Consider Authorizing The City Manager To Approve A Professional Services Agreement For Engineering Services With Birkhoff, Hendricks & Carter, LLP. For The Channels And Floodplains Aerial Survey Project In An Amount Not To Exceed $544,100.00.
Body
Summary:
The purpose of this item is to conduct aerial drone surveys of the City's drainage channels and to prioritize drainage projects.
Background:
The City of Carrollton has over 70 miles of channels and over 2300 acres of FEMA regulated floodplain. The maintenance and improvement of these areas have been at the discretion of the engineering and public works departments, with most considerations for capital projects being determined either by direct staff observation, work crew observations, or reports from residents of areas that need attention.
The Channels and Floodplain Aerial Survey project aims to more efficiently analyze, monitor, and identify areas within all the channels and floodplains that need to be repaired. The project aims to streamline that workflow through the following proposed scope of work:
1. Initial Data Review and Consulting - The consultant will meet with the City to review project goals and geospatial data, then develop an initial asset rating system for creeks and channels based on features such as floodplain data, crossings, slopes, and temporal erosion analysis. This rating system is flexible and can be updated as new data is gathered. The consultant can also apply machine-learning-based object recognition to improve feature identification and support more detailed future analysis.
2. Limited Initial Imaging - The consultant will use small unoccupied aerial systems (drones) to collect high-density LiDAR and high-resolution imagery, following FAA safety guidelines and avoidin...
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