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Stream Bank Restoration

12TH HOLE WALL STABILIZATION AND STREAM STRUCTURES
DRUID HILLS COUNTRY CLUB

Project:12th Hole Wall Stabilization and Stream Structures
Owner:Druid Hills Country Club
Location:Atlanta, Georgia
Engineer:Register-Nelson Environmental Consultants
Contact:Martin Shields (Board Member, Druid Hills Country Club)
Chris Carragher
Completion:December 2006
Project Superintendent:James Fonseca
Project Details: This project was a design build type project. Druid Hills Country Club employed our services along with the services of an Environmental Consultant to mitigate, restore, and protect the stream that crosses the course as well as the adjacent property improvements (greens, fairways, retaining walls, bunkers, etc.). We performed the work under an existing Corp of Engineers permit to maintain existing improvements. The maintenance of the previous stream improvements included: dewatering and rerouting approximately 250 lf of stream, 3 in stream sediment control structures (rip rap check dams with filter log barriers), 2 — large cross vanes constructed out of 2-4 ton 'cut' granite stones, 2 - J-Hooks constructed out of 1-2 ton 'cut' granite stones, project also had plans for gabions, k-dams, ripple structures, and in-stream boulders to help minimize velocity. The project required 420 lf of stream bank stabilization. This stabilization has been achieved by sloping, grading, applying various types of geo textiles (depending on slope and anticipated flows), rip rap, or specified organic cover. Re-vegetation will be achieved by hydro seeding, seeding, willow stakes, or other forms of aquatic planting.

PROJECT DETAILS

How it used to look
Generally placid but fast-running, powerful and erosive when full of run-off, the stream's unchecked energy caused more of the sandtrap and green to disappear with each heavy rain. Degradation of the streambanks by the runoff resulted in severe erosion and sedimentation.
Generally placid but fast-running, powerful and erosive when full of run-off, the stream's unchecked energy caused more of the sandtrap and green to disappear with each heavy rain. Degradation of the streambanks by the runoff resulted in severe erosion and sedimentation.

How it looked upon completion
This golf course now enjoys the beauty of its mile-long stretch of stream. This stable, attractive, and natural approach solved the erosion problem.
This golf course now enjoys the beauty of its mile-long stretch of stream because of this stable, attractive, and natural approach to solving the erosion problem.

Project Features
Inspection after the stream diversion was completed revealed a 5-foot erosion under the foundation. The repair design included utilizing stabilizing helical piers. Once the pier installations were completed, they were then embedded within the newly-poured foundation. This repair combination provides unparalleled stability and permanence to the existing structure.
Inspection after the stream diversion was completed revealed a 5-foot erosion under the foundation. The repair design included utilizing stabilizing helical piers. Once the pier installations were completed, they were then embedded within the newly-poured foundation. This repair combination provides unparalleled stability and permanence to the existing structure.
The perfectly-matched extension protected the sand trap and the surrounding green from further degredation. The use of geotextiles, stablization plantings and other erosion control techniques directed and controlled the water's energy and flow while enhancing the stream's aquatic habitat and appearance.
The perfectly-matched extension protected the sand trap and the surrounding green from further degredation. The use of geotextiles, stablization plantings and other erosion control techniques directed and controlled the water's energy and flow while enhancing the stream's aquatic habitat and appearance.
The increased filtering capacity and broadened cross-section of the restoration revealed natural beauty and stream efficiency long absent from this site. Where before there was only sedimentation and erosion, now clear pools and directed streams of clear water control the flow and add serene beauty to the site.
The increased filtering capacity and broadened cross-section of the restoration revealed natural beauty and stream efficiency long absent from this site. Where before there was only sedimentation and erosion, now clear pools and directed streams of clear water control the flow and add serene beauty to the site.
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