Road Stream Crossing Site PLT-A-6

Platte River Watershed, Woodcock tributary
Burnt Mill Rd
Almira Twp, Benzie County
Information collected by:
Site Location
GPS Coordinates: 44.70729 , -85.88277
T27N R13W Sec 28
Owned by Private
Structure is NOT Perched
Total Erosion: 0.0609 tons/year
Severity: Restored
Year Inventoried: 2015
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 1
Structure Shape: Open Bottom Square/Rectangle
Inlet Type: Wingwall 30-70 Degree
Outlet Type: At Stream Grade
Structure Material: Wood
Structure Substrate: Mixture
General Conditions: New
Structure Interior: smooth
Dimensions of Structure: Length 17 ft. , Width 17 ft. , Height 7 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 0.5 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1.2 ft./sec.
Structure Outlet
Water Depth: 0.3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1 ft./sec.
*Water Velocities were measured 0.3 ft. below Surface (with Meter)
Additional Comments

CRA assisted with installation September 2015.

Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 0 ft. , Width 0 ft. , Depth 0 ft.
Upstream Pond: Length 0 ft. , Width 0 ft. , Depth 0 ft.
Riffle Information
Water Depth: 0.7 ft.
Bankfull Width: 18 ft.
Wetted Width: 14 ft.
Water Velocity: 0.8 ft./sec. (Measured with Meter)
Dominant Substrate: Organics
Road Information
Paved County Road
Road Condition: Good
Road Width at Culvert: 15 ft.
Location of Low Point: Other
Runoff Path: Roadway
Fill Depth: 0 ft.
Slope: Vertical
Fill Depth: 0 ft.
Slope: Vertical
Left Approach
Length: 0 ft.
Slope: Less Than 1%
Vegetation: Partial
LS Factor: 0.05
Erosion: 0 tons/year
Right Approach
Length: 240 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.512
Erosion: 0.0609 tons/year
Erosion Information
Total Erosion at Crossing: 0.0609 tons/year
Extent of Erosion: Moderate

Pavement, curbing, and 3 spillways installed at construction.

Summary Information
Erosion is an area of concern for this site.