Halls Bayou, a tributary of Greens Bayou, is located in north-central Harris County. Approximately 20 miles in length, Halls Bayou collects stormwater from the Veterans Memorial Drive area, flowing east until it joins Greens Bayou at the City of Houston’s Brock Park. The watershed includes 37 tributaries of more than 1 mile – most with floodplains that have not been studied by the Federal Emergency Management Agency and so are not included on flood insurance rate maps, also known as floodplain maps. The Halls Bayou watershed, as a sub-watershed of Greens Bayou, is not counted as one of Harris County's 22 watersheds.
The watershed comprises approximately 45 square miles, mostly developed with a mix of residential, commercial and industrial uses. The population of the watershed is approximately 160,100, based on the 2010 Census.
Since May 2000, the Flood Control District has participated in approximately 273 voluntary buyouts in the Halls Bayou watershed that were largely funded by Federal Emergency Management Agency grants. Many of these structures flooded repeatedly and the buyouts allowed residents to move to a safer location on higher ground. Two areas where buyouts were performed have been converted to large regional stormwater detention basins: Bretshire and Hall Park.
The Flood Control District oversees more than 2,500 miles of bayous and creeks throughout Harris County and routinely performs maintenance projects to repair channels and stormwater detention basins that have experienced erosion, slope failure and sediment buildup. The Flood Control District has invested more than $3 million in maintenance projects along Halls Bayou and its tributaries over the past 15 years, including de-silt and slope repair projects.
Learn more about the mowing schedule for the Halls Bayou watershed