Road Stream Crossing Site CLHW_MC-020
Mill Creek Watershed, Unnamed
North Central State Trail
Mackinaw Twp,
Cheboygan County
Information collected by:
Site Location
GPS Coordinates: 45.7346
, -84.64018
T39N
R3W
Sec 35
Owned by Private
Perch Height: 0.1 ft.
Total Erosion: 0 tons/year
Severity: Severe
Year Inventoried: 2016
Site ID
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 1
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Sand
General Conditions: Poor
Structure Interior: corrugated
Structure is Rusted through
Dimensions of Structure: Length 40 ft.
, Width 2 ft.
, Height 2 ft.
Perch Height: 0.1 ft.
Structure Inlet
Water Depth: 1.2 ft.
Embedded Depth of Structure: 0.1 ft.
Water Velocity*: 0.5 ft./sec.
Structure Outlet
Water Depth: 0.7 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.5 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Stream Information
Stream Flow: Less than 1/2 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: 7 ft.
Wetted Width: 3.6 ft.
Water Velocity: 1 ft./sec.
(Measured with Float Test)
Dominant Substrate: Gravel
Road Information
Gravel
Other Road
(Seasonal)
Road Condition: Good
Road Width at Culvert: 10 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 4 ft.
Slope: More than 1:2
Downstream
Fill Depth: 1.8 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 0 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0 tons/year
Right Approach
Length: 0 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0 tons/year
Erosion Information
Total Erosion at Crossing: 0 tons/year
Extent of Erosion: Moderate
Summary Information
Erosion is an area of concern for this site.
Because this would not be considered a priority stream due to it being a wetland/low land drain stream