Presentation on theme: "1 Section 206: Aquatic Ecosystem Restoration Big Escambia Creek, Escambia Counties, Alabama and Florida Presented By: Charles Owens Project Management."— Presentation transcript:
1 Section 206: Aquatic Ecosystem Restoration Big Escambia Creek, Escambia Counties, Alabama and Florida Presented By: Charles Owens Project Management
2 Aquatic Ecosystem Restoration Section 206 WRDA 1996, as amended Objective: restore degraded aquatic ecosystems A Restoration Project is adopted for construction only after investigation shows that the restoration will improve the environment, is in the public interest, and is cost-effective. Each project is limited to a Federal cost of not more than $5 million. This Federal limitation includes all project-related costs for feasibility studies, planning, engineering, construction, supervision, and administration.
3 EscambiaRiver 4 AL FL CSX Railroad Northern Portion of Big Escambia Creek Northern Portion of Big Escambia CreekPre-Construction N Fannie Road
5 Looking West EscambiaRiver Southern Portion of Big Escambia Creek Pre-Construction Looking East 4 AL FL CSX Railroad Fannie RoadN
6 Gravel Mining Operation
9 Restored Channel Existing Channel Restored Channel Logjam #1 Original Channel Restored Channel Logjam #2 Original Channel Big Escambia Creek Restoration Project Primary Diversion Structure Secondary Diversion Structure Restored Creek Channel Key: Bank Log Vane Cross- Vane Log Vane Root Wad Root Wad Footer
10 Restored Existing Channel Northernmost Logjam Braided Channels as a result of the Logjam CSX Railroad Bridge Original Channel Northern Portion of the Restoration Project
11 Primary Diversion Structure Restored Channel Fannie Road Bridge Existing Channel Southern Portion of the Restoration Project
13 A view of the Southern Portion of the Project located south of the Primary Diversion Structure looking northward Again south of the Diversion Structure but now looking southward Notice minimal removal of trees adjacent to the channel
14 Three J-Hooks Structures located in one of the Big Escambia Creek Bends Root Wads are forced into the ground in order to stabilize logs running parallel and perpendicular to the creeks’ bank Cables are used to reinforce stability of the structures at the Middle and Bank Rootwad/Log Connection Geotextile fabric is placed in the upper portion Geotextile fabric is placed in the upper portion
15 In addition to these structures, Rootwad Clusters have been placed within the creek’s pools to increase aquatic habitat In addition to these structures, Rootwad Clusters have been placed within the creek’s pools to increase aquatic habitat Cross veins have been utilized to also divert flow Cross veins have been utilized to also divert flow Trees have been driven into the creek bottom leaving the exposed rootwad
16 Adaptive Management Process: The project team and contractor discussed Minor Channel Re- Alignment due an Existing Natural Eastern Bank of Extensive Roots Intertwined within it; thus, providing natural bank stability The project team and contractor discussed Minor Channel Re- Alignment due an Existing Natural Eastern Bank of Extensive Roots Intertwined within it; thus, providing natural bank stability Natural Bank is more stable than that of the Man-made Bank Natural Bank is more stable than that of the Man-made Bank Eastern Bank with Root mass Additional Root mass further south along the channel
17 Restoration of Big Escambia Creek promoted Additional Point Sand Bars to occur within the channel
18 Project Benefits Restoration of Ecological Conditions Along the Lower Four Mile Reach of Big Escambia Creek Watershed. Reduction of Flood Damages at Flomaton, Alabama and Century, Florida.
19 Project Completion The Project was completed in August The project was damaged by Hurricanes Ivan, Dennis and Katrina. –Emergency Funding Requested to Restore Hurricane Damaged Areas.