Road Stream Crossing Site CLHW_BC-016

Big Creek Watershed, Chub Creek
W Connors Rd
Mason Twp, Arenac County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 44.10581 , -83.85982
T20N R5E Sec 27
Owned by Private
Fish Passability 0.9
Structure is NOT Perched
Total Erosion: 0.4121 tons/year
Severity: Minor
Year Inventoried: 2016
Site ID
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: Headwall
Outlet Type: Cascade over Riprap
Structure Material: Concrete
Structure Substrate: Sand
General Conditions: Fair
Structure Interior: smooth
Dimensions of Structure: Length 32 ft. , Width 10.5 ft. , Height 5.4 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 1 ft.
Embedded Depth of Structure: 0.2 ft.
Water Velocity*: 0.3 ft./sec.
Structure Outlet
Water Depth: 0.4 ft.
Embedded Depth of Structure: 0.4 ft.
Water Velocity*: 0.3 ft./sec.
*Water Velocities were measured at the Surface (with Float Test)
Additional Comments
Streambanks are extremely eroded; these are very tall banks
Stream Information
Stream Flow: Less than 1/2 Bankfull
Scour Pool: Length 12 ft. , Width 8.5 ft. , Depth 1.7 ft.
Upstream Pond: Length 0 ft. , Width 0 ft. , Depth 0 ft.
Riffle Information
Water Depth: 0.9 ft.
Bankfull Width: 13 ft.
Wetted Width: 5.5 ft.
Water Velocity: 0.5 ft./sec. (Measured with Float Test)
Dominant Substrate: Sand
Road Information
Gravel County Road
Road Condition: Fair
Road Width at Culvert: 17 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Fill Depth: 0.8 ft.
Slope: More than 1:2
Fill Depth: 0.8 ft.
Slope: More than 1:2
Left Approach
Length: 100 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.38
Erosion: 0.178 tons/year
Right Approach
Length: 1000 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.2342 tons/year
Erosion Information
Total Erosion at Crossing: 0.4121 tons/year
Notes: Erosion along banks is severe
Summary Information
Fish Passability 0.9
Erosion is an area of concern for this site. May need to revist to survey bank erosion