Benson Watershed Regional Detention Pond

Budget: $11.6 million

Scope of work: Purchase land and construct, at a minimum, a new 90-acre-foot retention pond. 

Subdivisions, areas, or streets impacted: Area bounded by FM 646, Hill Avenue, Washington Street, Meadowlark Lane, and Weeks Avenue

Benson Bayou Regional Conveyance and Mitigation Pond aerial map

Benson Detention Pond timeline schedule

Project Status as of August 2022

A meeting was held with the consultant on June 8, 2022 to discuss the details of the environmental investigation of a proposed pond site. Due to the large number of forested wetlands within the proposed project area, the City directed the consultant to revise the project scope of work and design to remain within the approved budget for the project. The consultant delivered the revised schematic design on July 22, 2022, which included several alternative options to construct the detention basin within a smaller project footprint. The new options are currently under review by City staff. The City will review and determine whether the revised scope of the project is more cost effective, feasible, and within the approved budget.

Original Schedule

The original schedule, as of September 2019, shows design in progress from quarter 1 of 2020 through quarter 2 of 2021 for Benson Bayou Regional Conveyance & Mitigation Pond. Land acquisition is programmed from quarter 3 of 2020 through quarter 2 of 2021. Construction bidding is scheduled for quarter 3 of 2021 with construction following through quarter 4 of 2021. Construction time is an estimate as each bid is awarded based on cost and time submitted by the contractor.

Current Schedule

The current schedule, as of December 2021, for the Benson Bayou Regional Conveyance and Mitigation Pond project shows preliminary design completed with options for the project in quarters 1 and 2 of 2020. Preliminary designs for options completed in quarter 4 of 2021 and quarter 1 of 2022. Final design in progress from quarter 2 of 2022 through quarter 2 of 2023. Construction bidding is programmed for quarter 3 of 2023. Construction is programmed for quarter 4 of 2023 through quarter 4 of 2024. Construction time is an estimate as each bid is awarded based on cost and time submitted by the contractor.