From
Zee Slater
Title
Professional Engineering Services Contract with Walter P. Moore and University of Texas at Arlington for the development of a Flood Warning-Forecasting System Phase 3 in Grand Prairie in the amount of $150,000
Presenter
Stephanie Griffin, Floodplain Administrator
Recommended Action
Approve
Analysis
The City of Grand Prairie has a rain and stream gauge system consisting of 23 gauges. The system provides real-time rain and stream gauge data. This information has been used in the development and implementation of the City’s flood forecasting tool The City’s Stormwater Department, Public Works Streets Department, and Office of Emergency Management use the real-time data and the flood forecasting tool to determine anticipated timing and locations of flooding in order to dispatch crews to blockade and/or evacuate these locations during and following storm events.
The scope of work includes the following tasks:
• Task 1: Research gauge-adjusted radar-rainfall (GARR) options.
• Task 2: Test two watersheds with GARR data.
• Task 3: Incorporate the newest rain-stream gauge on E Jefferson into the flood forecasting system.
• Task 4: Use September and October 2018 storm events to validate/calibrate the existing watch points.
• Task 5: Monitor performance of flood warning system, including post-event analysis and updates.
The project team for the proposed work is compromised of Walter P. Moore and The University of Texas at Arlington. Multiple proposals are not solicited because of the team's familiarity with similar projects and their past record performance on City Projects.
Financial Consideration
Funding for a Professional Engineering Services Contract with Walter P. Moore and University of Texas at Arlington for the development of a Flood Warning-Forecasting System Phase 3 in Grand Prairie in the amount of $150,000, is available in the Storm Drainage Capital Projects Fund (401592) WO #01906203 (Flood Forecasting Tool)