Streambank Stabilization Projects

Case Study for Ronald Reagan Stream Restoration Project:

Located in a high use county park the Ronald Reagan Stream Restoration project was desperately needed to reduce severe erosion along Bankston Creek and its tributary. The existing streambed had been eroded 6 feet down from its original path causing increased erosion and a hazardous condition from its near vertical walls. Cross vane structures were installed from imported Tennessee Field Stone creating a series of short water falls and pools. These pools provide important habitat locations for native species; many fish can be seen darting in and out of the stone structures where a once depleted stream flowed. On a pleasant afternoon many families and dogs can be seen hanging out along the various structures. Site Engineering is proud to have completed a project that from a Civil Engineering viewpoint resolved the stream bank erosion problems and also provided such a well received amenity by the park users.

Case Study for City of Atlanta Intrenchment Creek:

The City of Atlanta’s entrance road to their SWAT training facility had been reduced to one lane due to severe bank erosion along Intrenchment Creek.  The powerful urban water flows south of downtown Atlanta could raise the water level of Intrenchment Creek from a normal flow depth of 1 foot to over 8 feet deep during a large downpour in matter of a few minutes!  Working with Ch2m Hill design engineers the client wanted a solution that would protect their roadway indefinitely – yet still incorporate the latest industry standards of stream restoration from an environmental perspective.  A gabion wall was built to directly protect the roadway.  In addition to this traditional stream armament a series of Cross-Vanes and J-Hooks were added along with benching a flood plain on the opposite side of the creek.  These structures in addition to reducing erosion and dissipating the creeks energy during high flow provide excellent habitats for fish.  The added aeration of the water helps increase the variety and quantity of water life.  Site Engineering installed over 2000 CY of gabions and hauled in 600 Tons of large toe rock boulders to complete the in-stream structures.  After final landscaping the once severe erosion problem is now a solid roadway platform and a rehabilitated urban stream.