Dates: Swainsboro, Georgia

Channel adaptive management strategies were developed and implemented to reduce in-channel velocities and shear stress within a Georgia coastal plain channel system.

Due to instability observed in a channel system, NAI conducted geomorphic channel surveys and analysis, including two-dimensional HEC-RAS modeling, to develop an adaptive management strategy to stabilize the system. Design plans were developed that reduced in-channel velocities through the inclusion of large woody debris and re-development of the channel profile as needed.

Services Provided
  • Channel geomorphology surveys
  • Regional and reference ecogeomorphologhical analyses
  • Two-dimensional HEC-RAS modeling
  • Development of 100% adaptive management design plans
  • Development of three-dimensional proposed surface terrains
  • Development of ecogeomorphological specific in-channel structures

Existing conditions two-dimensional HEC-RAS model of system velocities during a bankfull event. (image 1/4)

Existing conditions two-dimensional HEC-RAS model of system velocities during a bankfull event.

Installed woody riffle structure. (image 2/4)

Installed woody riffle structure.

Installed rock vane structure at start of adaptive management reach. (image 3/4)

Installed rock vane structure at start of adaptive management reach.

Installed log vane structure. (image 4/4)

Installed log vane structure.

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