Glen Forest Stormwater Detention Basin

Glen Forest Stormwater Detention Basin

Recent Action

June 8, 2021 - – Harris County Commissioners Court acknowledge substantial completion of this project.

June 8, 2021 - Harris County Commissioners Court authorized an additional $15,010 for construction stage engineering services in support of this project.

January 26, 2021 - Harris County Commissioners Court authorized an additional $6,000 for materials engineering and testing services for this project.


The Glen Forest Stormwater Detention Basin reduces the risk of flooding in the mid-reach stretch of Greens Bayou by taking in excess stormwater during heavy rain events and then releasing it slowly back to the channel when the threat of flooding has passed. The stormwater detention basin, completed in March 2021, holds 894 acre-feet, or 291.3 million gallons, of excess stormwater that might otherwise flood homes and businesses.

As part of this project, the Flood Control District constructed almost four acres of native tree and shrub plantings and stormwater quality treatment wetlands. Additionally, natural channel design features, including riffles, pools and a natural meander pattern, were used in the low-flow channel within the stormwater detention basin to provide environmental and water quality enhancement.

Greens Bayou Mid-Reach Program
This project is part of the Greens Mid-Reach Program. As originally envisioned, the Greens Mid-Reach Program is a several-hundred-million-dollar effort focused on the area from Veterans Memorial Drive downstream to JFK Boulevard. The Flood Control District began implementing this vision in the 2000s to bring much-needed flood risk reduction to residents along Greens Bayou.

In total, the Greens Mid-Reach Program proposes 11 miles of channel conveyance improvements and 10,500 acre-feet of stormwater storage through five stormwater detention basins to mitigate the increased flow of water and prevent any regional impacts. As of July 2022, 8,200 acre-feet of the required stormwater detention has already been completed or is currently under construction, including Bond Project C-33, the Aldine Westfield Stormwater Detention Basin, and Bond Project C-34, the Lauder Stormwater Detention Basin. The Glen Forest Stormwater Detention Basin and the Kuykendahl Stormwater Detention Basin are fully constructed and the fifth Hardy Stormwater Detention Basin is still in early feasibility.

The Greens Bayou Mid-Reach Program is a long-term commitment to improving flood resiliency for area residents, and the Flood Control District is dedicated to that vision. Work funded through the 2018 Bond Program will take a great leap forward in realizing this vision, and more work will continue to be phased in even after the projects included in the 2018 Bond Program are complete.


The Glen Forest Stormwater Detention Basin is located on a 160-acre site just east of Interstate 45 near Greens Road.


This project is COMPLETE.


In February 2015, FEMA awarded $39.2 million to the Harris County Flood Control District, under the Hurricane Ike Hazard Mitigation Grant Program (HMGP), for the construction of the Glen Forest and Kuykendahl stormwater detention basins. The Flood Control District contributed matching funds to fully fund the projects, bringing the total cost of construction to $63.7 million.