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Activity  ⁄  Active Projects  ⁄  Clear Creek  ⁄  C-05 Reverend William A. Lawson Stormwater Detention Basin

C-05 Reverend William A. Lawson Stormwater Detention Basin

C-05 Reverend William A. Lawson Stormwater Detention Basin
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C-03 Federal Flood Risk Management Project
C-03 Mud Gully (Beamer Ditch)
C-05 Reverend William A. Lawson Stormwater Detention Basin
C-05 South Belt Stormwater Detention Basin A520-03-00
CI-001 Major Maintenance on Clear Creek Channel
CI-003 Rehabilitation of the A214-00-00 channel
CI-013 Channel Conveyance Improvements on Tributary A104-00-00
CI-039 Partnership Project with Nassau Bay to Reduce the Risk of Flooding
CI-62 Stormwater Detention Basin Near FM 1959
CI-62 Study of Flood Mitigation Near FM 528 and FM 1959 in Friendswood
F-01 Morningside Place Drainage Improvements on Tributary A135-01-00
F-02 Hughes Stormwater Detention Basin
F-76 Clear Creek Regional Mitigation Bank
Second Outlet Channel and Gated Structure
Z-02 Lower Clear Creek Flood Mitigation Plan
Z-02 Partnership Project with WCID No. 50
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Note: Bond ID F-03 has been consolidated with Bond ID C-05.

Recent Actions

August 10, 2021 – Harris County Commissioners Court amended an interlocal cooperation contract with the University of Houston Clear Lake in connection with floating treatment wetlands at this basin

May 25, 2021 - Harris County Commissioners Court approved an amendment to a Joint Funding Structure between Harris County and the Flood Control District for the construction of recreational trails at this basin. Court members also approved naming the basin in honor of the Reverend William A. Lawson

September 29, 2020 - Harris County Commissioners Court authorized an additional $12,000 to the contract amount for construction of this project.

September 15, 2020 – Harris County Commissioners Court authorized the acquisition of one easement in support of this project.

May 19, 2020 – Harris County Commissioners Court approved updates to project details in the 2018 Bond Program List. Update changes project title to include Unit ID; project funding also updated based on engineer's estimate and consolidation with Bond ID C-05; and project type changed because no funding partner has been identified.

May 2020 – Construction began. April 28, 2020 – Harris County Commissioners Court authorized negotiations with an engineering firm for materials engineering and testing services in support of this project.

February 11, 2020 - Harris County Commissioners Court authorized a joint funding structure between Harris County and the Flood Control District for construction of trails at the Christia V. Adair Stormwater Detention Basin.

January 28, 2020 - Harris County Commissioners Court awarded a $16.96 million contract for construction of the South Belt and Christia V. Adair Stormwater Detention Basins.

November 12, 2019 – Harris County Commissioners Court authorized negotiations with various political jurisdictions for agreements in support of collaborative efforts to implement the Clear Creek Federal Flood Risk Management Project and Clear Creek watershed bond projects.

August 13, 2019 – Harris County Commissioners Court authorized negotiations with an engineering firm for materials engineering and testing services in support for this project.

November 13, 2018 – Harris County Commissioners Court awarded a $428,051 contract for engineering services to provide design, bidding and engineering services in support of this project.

Project Description

The Reverend William A. Lawson Stormwater Detention Basin (HCFCD Unit A500-08-00), formerly known as the Dagg Stormwater Detention Basin, will help reduce flooding risks in the Clear Creek watershed by storing excess floodwater during times of heavy rain, and releasing it back to the creek when the threat of flooding has passed.

A preliminary engineering report completed in September 2018 evaluated alternatives for the basin, which is proposed at the site of a former sand pit purchased by the Flood Control District in 2017. The report recommended construction of a basin with a permanent pool that will hold approximately 188 acre-feet of stormwater and include features to improve stormwater quality.

The Flood Control District is coordinating plans for the stormwater detention basin with Harris County Commissioner Precinct 1, which manages Adair Park.

To further extend 2018 bond funding, the Reverend William A. Lawson Stormwater Detention Basin project was paired with the third phase of the South Belt Stormwater Detention Basin project for construction. These two detention basins complement, but are separate from the Clear Creek Federal Flood Risk Management Project.

Location

The basin will be located on an approximately 22-acre site near the intersection of Cullen Boulevard and the Sam Houston Tollway, just north of Christia V. Adair Park.

Stage

The stormwater detention basin is currently under construction. Construction started in April 2020.

Bond Listing

Bond Project C-05 is a “Local Only” bond project, which means there is no other funding partner at this time and total project costs would be paid with bond funding. Total estimated funds for construction of the Christia V. Adair Stormwater Detention Basin and Phase 3 of the South Belt Stormwater Detention Basin is $18.5 million.

C-05 Reverend William A. Lawson Stormwater Detention Basin - Image 1



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As the first step of construction on the site just north of Christia V. Adair Park, contractors filled in a 50-foot deep portion of the site's former sand pit. The fill does not reduce the capacity of the stormwater detention basin because the storage area is above the water level to the top of the stormwater detention basin's banks.

C-05 Reverend William A. Lawson Stormwater Detention Basin - Image 2



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During construction, dump trucks, excavators and bulldozers enter the work area via Dagg Road or Kilnar Road. Motorists should exercise caution to when passing near construction access points and along truck routes.

Bond List

List of 2018 Bond Projects

The University of Houston Clear Lake Environmental Institute Houston (EIH) is evaluating some innovative techniques to improve stormwater quality using floating wetlands. These techniques are being tested and are currently deployed on Potter Pond at the University of Houston Clear Lake campus. Results from the EIH study will help the Flood Control District to determine some answers to questions about deployment (installation, construction, anchors), vegetation (types, sizes, best location)and maintenance (vegetation/equipment upkeep and material types). Ideally, the Flood Control District will choose two of these island types to scale the project up and fill large surface areas (2,000 – 3,000 Sq. Ft.) at the Reverend William A. Lawson (formerly known as Dagg) Stormwater Detention Basin.

Floating Wetlands video (begins at 2:06 mark)

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The Harris County Flood Control District has a significant number of flood damage reduction projects occurring all over Harris County as part of its on-going Capital Improvement Program (CIP), Operations and Maintenance, and the 2018 Bond Program. Click the Project ID on the Map to learn about projects’ details. Some early-stage projects are not highlighted on the map. The map will be updated when projects advance or when more information becomes available.

Project Lifecycle

Every flood damage reduction project is unique. Yet each project begins and ends, with common and predictable milestones along the way. Whether a project moves forward – and how quickly – depends on many factors, including the availability of funding at each milestone, shifting community priorities for flood damage reduction, and other changing circumstances (such as the price of trees or concrete) from year to year.

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