Projects & Studies

Mud Gully (Beamer Ditch) and South Belt Stormwater Detention Basin

These two projects work together to reduce flooding risk and damages in the Clear Creek and Mud Gully (Beamer Ditch) watersheds:

South Belt Stormwater Detention Basin

Phase I, A520-03-00-E001

  • Partnership between the Harris County Flood Control District and Galveston County.
  • Located on 174-acre site northwest of Beamer and Dixie Farm roads.
  • Will reduce flood damages downstream along Clear Creek by as much as one foot, in Friendswood and Galveston County.
  • Provides stormwater storage needed for mitigation of expected increases in stormwater flows resulting from future channel improvements to Beamer Ditch (HCFCD Unit A120-00-00, also known as Mud Gully) and other projects.
  • Designed to initially provide more than 278 acre/feet or more than 90 million gallons of stormwater storage, of which 52 acre/feet is reserved as mitigation for other projects.
  • Galveston County has pledged up to $10 million of total basin construction costs. Construction costs for Phase I, estimated at $5 million, will be shared equally by the Flood Control District and Galveston County.

 As of Fall 2016:

  • Harris County Commissioners Court awarded an approximately $3.46 million construction contract to low bidder Trans-Global Solutions Inc. for Phase 1 of the basin project.
  • Construction of Phase I began in late September 2014 and is expected to be complete in 2017. 

 Phase II, A520-03-00-E002

  • Continues the partnership project between Harris County Flood Control District and Galveston County.
  • Includes basin cells south and west of Phase I cell, on same 174-acre site northwest of Beamer and Dixie Farm roads.
  • Provides stormwater storage needed for mitigation of expected increases in stormwater flows resulting from future channel improvements to Beamer Ditch (HCFCD Unit A120-00-00, also known as Mud Gully) and other projects.
  • Extent of Phase II enlargement will depend on available budget. The basin is ultimately designed to hold up to 1,250 acre/feet or 407 million gallons of stormwater.
  • Completed basin and planned Beamer Ditch channel improvements TOGETHER will remove the 1 percent (100-year) floodplain from 593 Harris County homes and 54 Galveston County homes.

 As of Fall 2016:

  • Harris County Commissioners Court awarded a $15.78 million construction contract to James Construction Group LLC for Phase 2 of the basin project.
  • Construction began in November 2016.
  • Galveston County has pledged up to $10 million of total basin construction costs. 

Beamer Ditch Channel Improvements

A120-00-00-C003

Sagerock Drive to Astoria Boulevard

  • Proposed project will extend approximately 4,200 feet (.8 mile) along Beamer Ditch, from Sagerock Drive to Astoria Boulevard, north of South Belt Stormwater Detention Basin.
  • Included in the Flood Control District’s 2015-2016 Capital Improvements Program, subject to funding.
  • Component of the U.S. Army Corps of Engineers-led Clear Creek Federal Project; currently under review for implementation by the Flood Control District.

 As of Fall 2016:

  • Project is in final design.
  • Initial surveys and geotechnical testing have been completed.
  • Corps' plan proposes to concrete-line Beamer Ditch with a 45-foot bottom width, 4:1 side slopes.
  • The Flood Control District is exploring options for a possible locally funded alternative that achieves similar flood damage reduction goals with lower environmental mitigation costs.