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 December 2021

GO Bond project; the engineer submitted a new drainage analysis study on Feb 24, 2021 with recommendations to fit within a $12 million budget; staff recommends moving forward with detention basin 8 as outlined in the analysis; consultant preparing the proposal for additional services and revised schedule. Notice to proceed issued on December 1, 2021 for Environmental Services to determine viability of the project. Right-of-entry's sent on December 10, 2021 to gain access to perform the services. As of January 13, 2022, less than half of owners have returned the documents.

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.