In a significant move to bolster its flood mitigation efforts, the Sealy City Council, in its latest meeting, focused on a major infrastructure project: the expansion of the B&PW Park Retention Pond and the improvement of downstream stormwater conveyance. This initiative marks a crucial step in the city’s ongoing efforts to address the challenges posed by frequent flooding, particularly in the Allens Creek watershed area.

The project, which has been a subject of previous studies by Strand, a consulting group specializing in watershed management, aims to minimize the potential for flooding. It includes two main components: the expansion of the B&PW Park retention pond and the enhancement of stormwater conveyance systems along Sunset Avenue and West View Terrace Drive. These improvements are targeted to mitigate flood damage in the West View Terrace neighborhood for storms up to a 100-year return interval.

A key aspect of the project involves the expansion of the B&PW Park retention pond. The plan includes deepening and expanding the existing pond by excavating 245,000 cubic yards of material, effectively doubling its size. This enhancement is crucial for increasing the area’s capacity to manage excess stormwater during heavy rainfall events. The estimated cost for this part of the project ranges from $1.4 to $2.6 million, depending on who undertakes the transportation of the excavated materials.

Additionally, the Downstream Conveyance Improvements, which encompass the upsizing and deepening of the pond outfall structure and storm sewer pipes, are estimated to cost an additional $2.7 million. When combined, the total cost of both projects is anticipated to be between $4.1 to $5.3 million.

Funding for this ambitious project is expected to come from certificates of obligation, with the 2018 and 2022 series identified as eligible sources. 

The project also includes strategic flood mitigation measures. The improved storm sewer system is designed to efficiently convey a 25-year storm event, with any surcharging above this being safely managed through surface overland flow. The goal is to limit any street flooding to a depth of one foot or less to prevent damage to adjacent structures, a crucial aspect in safeguarding the community during extreme weather conditions.

As the council deliberated on these plans, the next steps include seeking further input on advancing specific portions of the projects. Strand, upon approval, is set to prepare a detailed task order, outlining the scope, fees, and schedule for the council’s consideration in upcoming meetings.  The full presentation and discussion starts at the 05:38 mark of the video below:

 

 

 

 

Floating Vimeo Video