Road Stream Crossing Site AUS_CR056

Au Sable River Watershed, Wakely Creek
Wakely Bridge Rd
Grayling Twp, Crawford County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 44.65356 , -84.5108
T26N R02W Sec 14
Owned by Private
Fish Passability 0
Structure is NOT Perched
Total Erosion: 2.7686 tons/year
Severity: Severe
Year Inventoried: 2013
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 1
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: Outlet Apron
Structure Material: Metal
Structure Substrate: None
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 70 ft. , Width 3.6 ft. , Height 3.6 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 0.6 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1.026 ft./sec.
Structure Outlet
Water Depth: 0.4 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 4.762 ft./sec.
*Water Velocities were measured at the Surface (with Float Test)
Stream Information
Stream Flow: More than Bankfull
Scour Pool: Length 21 ft. , Width 23 ft. , Depth 5.4 ft.
Upstream Pond: Length 0 ft. , Width 0 ft. , Depth 0 ft.
Riffle Information
Water Depth: 0.4 ft.
Bankfull Width: 9 ft.
Wetted Width: 5.2 ft.
Water Velocity: 2.802 ft./sec. (Measured with Float Test)
Dominant Substrate: Sand
Road Information
Paved County Road
Road Condition: Good
Road Width at Culvert: 34 ft.
Location of Low Point: Other
Runoff Path: Ditch
Fill Depth: 6.3 ft.
Slope: 1:2
Fill Depth: 4 ft.
Slope: 1:2
Left Approach
Length: 0 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0 tons/year
Right Approach
Length: 540 ft.
Slope: More Than 10%
Vegetation: Heavy
LS Factor: 4.486
Erosion: 2.7224 tons/year
Erosion Information
Total Erosion at Crossing: 2.7686 tons/year
Extent of Erosion: Moderate
Location of Erosion
Erosion Dimensions
Eroded Material
Material Eroded
Total Erosion
facing downstream
Reaching Stream?
Right Downstream
11 ft.
10 ft.
0.6 ft.
Summary Information
Fish Passability 0
Fish Passage is an area of concern for this site. Water velocity is over 5ft/sec, creating huge scour pool at downstream side.
A future visit to this site is recommended. Yes, to check scour pool/erosion site/water velocity.