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Dog River Sand Bag Breakwater

Created by Beau Buhring on Jan 08, 2015  
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General
Mobile , AL
United States
30° 36' 20.9124" N, 88° 6' 29.1888" W
Alabama US
Pre-Project Conditions
Submerged Aquatic Vegetation (SAVs) present?: 
No
Bank elevation above MHW: 
1.0 foot
Pre-Construction Erosion Present?: 
Yes
Pre-Construction Erosion at Adjacent Parcels?: 
Do Not Know
Existing Structures or Debris?: 
No
Environmental Considerations
Name of Waterbody: 
Dog River
Site Classification: 
Other
Other Site Classification Description: 
River/channel
Maximum Exposed Fetch Distance: 
0.00 miles
Shoreline orientation relative to max. fetch distance: 
0 Degrees
Tidal Range: 
1.0 feet
Adjacent to Navigation Channel?: 
No
Boat wake exposure: 
Low
Project Site Within a Designated No-Wake Zone?: 
No
Salinity: 
Freshwater: 0 – 0.5 ppt
Description of Nearby Structures: 
Existing bulkheads at adjacent parcels
Design Considerations
Was fill brought in?: 
Yes
Type of Fill: 
Sand
Amount of Fill: 
7 cubic yards
Proposed nearshore slope: 
1:7.0
Area of shallow bottom conversion to marsh: 
280 sq ft
Length of Project: 
40 feet
Average Project Width: 
7 feet
Width of Wetlands Above MHW: 
7 feet
Structural Elements
Did the project involve a structure?: 
Yes
Type of Structure: 
breakwater
Describe construction materials: 
Stacked sand bags
Average distance of structure offshore (from existing MHW/NHW): 
7 feet
Average distance of structure offshore (from existing MLW/NLW): 
7 feet
Structure Base Width: 
2.0 feet
Length of Structure: 
40 feet
Structure Crest Width: 
1.0 foot
Area of shallow bottom conversion to structure: 
80 square feet
Width of Open Water Between Structure and Wetlands: 
0 feet
Height of Structure Above MHW: 
0.0 feet
Maximum depth at seaward edge of structure: 
1.4 feet
Maximum depth at landward edge of structure (including fill): 
0.5 feet
Drop downs, or openings or overlaps?: 
No
Type of foundation: 
None
Was geotextile used in foundation?: 
No
Non-Structural Elements
Percentage of vegetative cover between structure and MHW line: 
100%
Was erosion fabric used for soil stabilization?: 
No
Primary Wetland species below MHW: 
Other
Primary wetland species above MHW: 
Other
Cross-section width of planted area: 
7 feet
Project Performance
Overall performance of Living Shoreline for erosion protection?: 
High
Storm Exposure: 
Do Not Know