Road Stream Crossing Site AUS_CR093

Au Sable River Watershed, Tributary of North Branch Au Sable River
McMaster's Bridge Rd
Lovells Twp, Crawford County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 44.69764 , -84.41852
T27N R01W Sec 27
Owned by Private
Fish Passability 0
Perch Height: 0.2 ft.
Total Erosion: 2.6842 tons/year
Severity: Severe
Year Inventoried: 2013
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 1
Structure Shape: Round
Inlet Type: Apron
Outlet Type: Freefall into Pool
Structure Material: Metal
Structure Substrate: Rock
General Conditions: Fair
Structure Interior: corrugated
Dimensions of Structure: Length 56 ft. , Width 2 ft. , Height 2 ft.
Perch Height: 0.2 ft.
Structure Inlet
Water Depth: 0.2 ft.
Embedded Depth of Structure: 0.1 ft.
Water Velocity*: 1.5 ft./sec.
Structure Outlet
Water Depth: 0.2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1.765 ft./sec.
*Water Velocities were measured at the Surface (with Float Test)
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 5 ft. , Width 3 ft. , Depth 0.7 ft.
Upstream Pond: Length 0 ft. , Width 0 ft. , Depth 0 ft.
Riffle Information
Water Depth: 0.3 ft.
Bankfull Width: 5 ft.
Wetted Width: 3 ft.
Water Velocity: 0.8 ft./sec. (Measured with Float Test)
Dominant Substrate: Sand
Road Information
Paved County Road
Road Condition: Good
Road Width at Culvert: 33.4 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Fill Depth: 2.9 ft.
Slope: More than 1:2
Fill Depth: 3 ft.
Slope: More than 1:2
Left Approach
Length: 407 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.603
Erosion: 0.2709 tons/year
Right Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.8
Erosion: 0.8833 tons/year
Erosion Information
Total Erosion at Crossing: 2.6842 tons/year
Extent of Erosion: Severe
Erosion is occurring and corrective actions can be installed to address the problem.
Notes: Silt fences are needed.
Location of Erosion
Erosion Dimensions
Eroded Material
Material Eroded
Total Erosion
facing downstream
Reaching Stream?
Right Ditch
30 ft.
25 ft.
3 ft.
Summary Information
Fish Passability 0
A future visit to this site is recommended. To assess erosion/scour pool
These non-native species were observerd at this site: Spotted Knapweed, Mullein