Upcoming Professional Services Projects
Dam Improvements Project
De Cordova Bend Dam - Lake Granbury
This project will incorporate multiple improvements to the dam. Contemplated is a comprehensive evaluation of the 16 Tainter Gates and appurtenances; an assessment and design of a replacement stoplog operations system; and implementation of a soil stabilization improvement on the Southside of the spillway.
Estimated Request for Proposals: Open - Bid Close June 22
Electrical Vulnerability Assessment
De Cordova Bend Dam - Lake Granbury
The BRA will conduct a comprehensive assessment of the facility's electrical system, possible vulnerabilities, and system redundancies to ensure continuous power is available for flood releases for all contingencies.
Estimated Request for Proposals: FY23 Q4
Bay 9 Transition Beam Remediation
Morris Sheppard Dam - Possum Kingdom Lake
During inspections, a leak was discovered inside the dam. After investigation, it was theorized that the upstream transition beam was cracked, and possibly the primary source of the leak. This project is to perform a detailed evaluation of the leak and to develop and implement a repair method to correct the leak. This does not pose a dam safety issue.
Estimated Request for Proposals: FY23 Q4
COC Recoating and Repairs
Morris Sheppard Dam - Possum Kingdom Lake
During a routine inspection of the Controlled Outlet Conduit (COC), it was noted that numerous wear spots have been created due to the removal of the interior coating during normal operation. It was also noted, that structural cracks in the 78-inch Ring Jet Valve (RJV) have occurred. This project will assess/repair stress cracks in the RJV and recoat the interior of the COC.
Estimated Request for Proposals: FY23 Q4
Architectural Assessment, Design and Replacement
Sterling C Robertson Dam - Lake Limestone
The existing administrative complex, constructed at Lake Limestone in late 1978, has aged over the past 40 years. The growth of Lake Limestone and its staff has also grown to a level where insufficient workspace is available for daily operation for lake staff. This project includes a needs assessment of the current structures and a feasibility study/initial design to determine the site, size, and estimated cost to build a new administrative complex or add additional structures to the current buildings.
Estimated Request for Proposals: FY24 Q2
Embankment Stability Analysis and Assessment
De Cordova Bend Dam - Lake Granbury
Per a De Cordova Bend Dam 5-Year Engineering Inspection Report, it is recommended that consideration be given to setting new piezometer threshold values, which are tied to the stability of the North and South embankments at De Cordova Bend Dam. In an effort to ensure that the embankments will achieve an additional 50-year service life, an embankment assessment and stability analysis is planned to verify whether any improvements or modifications are necessary.
Estimated Request for Proposals: FY24 Q2
Seismic Analysis & Hydrographic Sedimentation Survey
Morris Sheppard Dam - Possum Kingdom Lake
Per a recent Engineering Inspection Report of Morris Sheppard Dam, it is recommended that a seismic analysis of the dam be completed using induced seismic loading and the latest information from USGS. Also, it is recommended that a hydrographic sedimentation survey should be completed.
Estimated Request for Proposals: FY24 Q2
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