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Keith-Wiess Stormwater Detention Basin Construction to Begin Soon
January 24, 2006
Harris County Commissioners Court recently approved a recommendation for the Harris County Flood Control District to award a $10 million contract for the excavation of a stormwater detention basin inside the City of Houston's Keith-Wiess Park.
When complete, the Keith-Wiess Stormwater Detention Basin will comprise roughly 112 acres of the park and be able to store more than 290 million gallons of stormwater in the event that Halls Bayou overflows. This amount is the equivalent to just more than half the size of the Reliant Astrodome. The basin is expected to lower water surface elevations by as much as 0.8-feet during a 10% (10-year) storm event, and by as much as 0.4-feet during a 1% (100-year) storm event. (A 10-year storm has a 10 percent chance of happening any given year. A 100-year storm has a 1 percent chance of happening any given year.)
Immediate Area Will See Significant Benefits
The area expected to receive the largest reduction in water surface elevation from the Keith-Wiess Stormwater Detention Basin is between Jensen Drive and Homestead Road. Generally speaking, the basin will ensure safe storage of stormwater and reduce the risk of flooding for this area.
Construction on the stormwater detention basin, which calls for the excavation of approximately 1.8 million cubic yards of soil, is expected to begin in April, 2006 and take an estimated three years to complete.
Partnerships and Grants Provide Multi-Use Amenities
While the basin's primary purpose lies in reducing flood risks for those in the Halls Bayou watershed, it also will be the site of new park amenities, including a 1-mile concrete hike and bike trail, 2 miles of soft-surfaced nature trails and a footbridge over Halls Bayou, recreational equipment, habitat and wetlands plants, three soccer fields, interpretative signs, a fishing pier and a wetlands boardwalk. These amenities will be paid for by a $2 million grant from the Texas Parks and Wildlife Department and from monies from Harris County, the City of Houston and the Aldine Community Improvement District.
Part of The Bigger Picture
The Keith-Wiess Stormwater Detention Basin - made possible through a unique partnership with the City of Houston - is part of the District's $130 million conceptual plan to excavate six regional stormwater detention basins along Halls Bayou, in addition to widening and deepening the channel and several bridge modifications.
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