News & Updates

Flood Warning System

Harris County Flood Warning System

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.

Update: We have are in the process of adding 8 new locations around our District.  Check out the latest map and get live updates via text or email at the Harris County Flood Warning System site:

Flood Warning System Map


More Information:

Westminister Ditch

Westminister (BBQ) Ditch is an existing drainage channel located just north of the intersection of FM 518 & Pearland Parkway.  The ditch is a grass-lined channel that drains east before discharging into Clear Creek.

The purpose of this project is to shift the ditch within District owned Right of Way in order to provide sufficient maintenance access on both sides of the channel.  The District will also rehabilitate and re-establish the slope of this ditch as well as replace failing outfalls.

Country Place Ditch

Brazoria Drainage District No. 4 is scheduled to begin drainage reclamation and maintenance activities on the Country Place, The Lakes at Country Place, and Southdown drainage ditch in July 2019.

Project scope shall include, but is not limited to, Drainage Right of Way reclamation, outfall repairs, and maintenance of the drainage ditch adjacent to Country Place, The Lakes at Country Place, and Southdown subdivisions.

The initial phase of the project shall include drainage easement reclamation work consisting of the removal of trees, debris, and any encroachments upon the Drainage Right of Way. The Drainage Right of Way has been located by a professional land surveyor. The Drainage Right of Way will be cleared of any encroachment including structures, fence, plantings, and any other obstructions to the operation and maintenance of the drainage facility.

The drainage channel known as Country Place/Southdown Ditch extends from State Highway 288 east, then turning north to outfall into Clear Creek.  The neighborhoods to the north and south of this ditch began construction in the early 1980s.  The outfall pipes from those neighborhoods have needed repairs or replacement for several years.  This project will first address those failing outfall pipes and structures from Country Place and Southdown, then will refocus to regrading of the channel.

This project is scheduled to start in July 2019

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Springfield Ditch

Springfield Ditch & Park Village Detention Pond

The detention facilities for the neighborhoods of Springfield and Park Village have been plagued with drainage difficulties for many years.  In an effort to more effectively drain these facilities, the District engineered and has nearly completed a project that combined the two detention ponds with the drainage channel that was located between the ponds.  This design addressed the drainage concerns, replaced failing outfall pipes, and simplified the maintenance burden in perpetuity.

This project is near completion with only hydro-mulch grass seeding left to finish.



Clear Creek Reclamation Project

This project’s scope is to remove approximately 90,000 yards of dirt from the Clear Creek channel creating a bench just above the static water level, thus creating additional detention within the banks of the channel.  This project continues and connects with a job completed last year just upstream that commenced one quarter mile south of the Barry Rose bridge.  The previous job was approximately one quarter mile in length, the current project is approximately one half mile in length.

This job is part of an ongoing reclamation project for Clear Creek.


Masonic Lodge Ditch

The Brazoria Drainage District No. 4 is scheduled to begin drainage reclamation and maintenance activities on the Willowick drainage ditch and detention system in June 2019.

Project scope shall include, but is not limited to, ditch reclamation, concrete box culvert installation, and maintenance of the drainage ditch adjacent to Willowick subdivision. Included in this work is the reclamation of the drainage easement within the Willowick subdivision for maintenance access.

The initial phase of the project shall include drainage easement reclamation work consisting of the removal of trees, debris, and any encroachments upon the drainage easement. The drainage easement has been located and marked by a professional land surveyor. The drainage easement will be cleared of any encroachment including structures, fence, plantings, and any other obstructions to the operation and maintenance of the drainage facility. Property owners with identified encroachments will receive with this correspondence an exhibit reflecting the area of encroachment that will need to be remedied.

The Masonic Lodge Ditch job is a channel improvement project to restore 2,500 feet of open ditch from the rear of the CF Spencer Masonic Lodge on Walnut St. at the north and extending south to the recently completed Fite Rd. extension.  The installation of the box culvert storm sewer beneath the Fite Rd. extension made possible the improvements that this ditch has needed for some time.  The project scope includes the regrading of approximately 2,100 linear feet of open ditch, installation of 300 feet of concrete box culvert, and the replacement of failing outfall pipes from the Willowick subdivision.

This project is scheduled to start in early July 2019 and is expected to be completed in September 2019

Draft Hazard Mitigation Plan

Brazoria Drainage District No. 4 is currently in the process of updating our FEMA Local Hazard Mitigation Plan. The draft Hazard Mitigation Plan update will be available to the public for review and comment on the April 2, 2019 board meeting agenda. This will occur in conjunction with a presentation to the Board of Commissioners, which describes the draft plan update. The presentation will coincide with the start of a 30-day public comment period during which residents and business interests can review the draft plan update and provide comments to BDD4 before the update is finalized.

Comments may be provided by:

  1. email comments to Adrian Gengo, BDD4 Plans Coordinator;
  2. mail comments to our offices at 4813 W. Broadway, Pearland TX 77581; or
  3. drop off comments at our office.

Comments will be considered by the Mitigation Planning Committee and incorporated as appropriate. The District asks that you please review and provide your comments back by May 10, 2019 in order to give enough time to incorporate the comments into the draft.

Please contact us at BDD4 with any questions, comments, or concerns.

Brazoria County Stormwater Quality Coalition

   Brazoria County Stormwater Quality Coalition Website

The Brazoria County Stormwater Quality Coalition consists of the City of Lake Jackson, City of Freeport, City of Clute, City of Alvin, City of Richwood, City of Angleton, Brazoria County C & R District No. 3, Brazoria Drainage District No. 4, Angleton Drainage District, Velasco Drainage District, and Brazoria County.  The coalition was formed in August 2007 as an effort by the members to assist one another in complying with stormwater quality regulations established by the Texas Commission on Environmental Quality.

Help us improve water quality in Brazoria County.  Please report the following to the stormwater pollution hotline:

  • Illicit discharges
  • Non-compliant construction sites
  • Illegal dumping
  • Other stormwater quality concerns

    Stormwater Pollution Hotlines:

(979) 864-1295

(979) 388-1295

(281) 756-7295