The District acquired approximately 43-acres adjacent to Cannon Ditch in an area that was identified in the District’s Master Drainage Plan as an area for regional detention. The District will be able to create approximately 280 acre-feet of detention capacity in an area that has had flood problems in the past.
This project has been completed
This project is part of a collaborative effort with the City of Pearland
This is a joint partnership project with the City of Pearland that will replace a full 120′ run and a partial run of RCP that has separated. Both runs will be straighten out the 30″ RCP. The District will also realign the open ditch to the south which flows into Old Mary’s Creek.
Town Ditch is being regraded and reseeded from Old Alvin Rd. to Pearland Pkwy. as part of the continued effort to improve drainage in the area.
This project is part of a collaborative effort with the City of Pearland
This detention facility is designed as a regional mitigation basin strictly for the benefit of the watershed with no availability to be sold or allocated for public of private projects as part of a joint project with the City of Pearland. This area was identified in the Master Drainage Plan and the specific property was found to be available during the design process of the McHard Rd. Extension project. It is approximately 35 acres and the volume will be maximized to provide ultimate benefits to the surrounding community.
The recently dedicated Harrison Rogers Detention Facility will deepen the currently constructed detention pond on the eastern portion of the property and connect it to the proposed detention pond on the western portion. The ponds will utilize a pumped system to fully maximize the capacity and will provide additional flood mitigation for the surrounding neighborhoods of Mimosa Acres and Willowcrest.
The ponds are located at the BDD4 offices property on either sides of the back parking lot and shop.
This project has been completed
The District has identified the need for improvements to the weir structures at the Bailey Detention Pond (south of Bailey; west of Wells Dr.) and the Cowart Diversion Detention Pond (between Veterans Dr. and Wells Dr.).
A drainage study of the Hood Ditch area was completed in August 2017 which identified several projects that would reduce flooding along Hood Ditch. The improvements at the Diversion Pond were included in this study and was used as a guide to scope this project.
The proposed optimization of the existing weir to Bailey Pond has also been identified by observations during rain events and the LOMR for Coward Creek Diversion improvements. These improvements will provide efficient use of the available volume in both ponds and will reduce the flooding risk to residents along the north/south streets between Bailey and CR 100.
This project is part of a collaborative effort with the City of Pearland
The Clear Creek Federal Flood Damage Reduction Project is a partnership project between the U.S. Army Corps of Engineers, the Harris County Flood Control District, Galveston County, and Brazoria Drainage District No. 4. As of the June 2019 Project Partnership Agreement between the Corps and the Harris County Flood Control District, the Flood Control District is the lead agency for this project, under a non-federal implementation pilot program authorized by Section 1043(b) of the Water Resources Reform and Development Act (WRRDA) of 2014.
The portion of this project within the limits of Brazoria Drainage District No. 4 is Clear Creek between SH 288 and Dixie Farm Road and Mary’s Creek from Harkey Road to SH 35.
For more information please click on the following links:
Brazoria Drainage District No. 4’s Board of Commissioners has adopted the updated Hazard Mitigation Plan at the January 7, 2020 board meeting.
The updated plan can be downloaded at the following link:
In 2018 Brazoria Drainage District No. 4, through the use of a Memorandum of Understanding (MOU) with the City of Pearland and an Inter-local agreement with the Harris County Flood Control District, installed 8 new rain/storm gauges throughout the district (map of gauge locations).
The purpose of this project was to remove the old gauges that the City of Pearland owned and replace them with the newest technology in order to give residents within our jurisdiction real-time monitoring of our local streams and bayous. The data includes water levels, rainfall amount, historical flooding data, a visual cross-section of the associated drainage channel, and our benchmark information at each gauge station.
When it begins to rain, data-collecting sensors at each gauge station transmit rainfall amounts via radio frequency every time 0.04 inches of rain is measured by the sensor. Sensors that transmit bayou/stream levels report every 0.10 foot rise in water levels. The sensors transmit information to four primary repeaters located in the Huffman, Clodine, League City, and Tomball areas.The repeaters then relay the data to primary and back-up base stations located at Houston Transtar and at the Harris County Appraisal District. The information is monitored daily by software and by Flood Control District staff to ensure the gauges are properly functioning and transmitting accurate data.