Road Stream Crossing Site CLHW_MC-018
Mill Creek Watershed, Mill Creek
North Central State Trail
Mackinaw Twp,
Cheboygan County
Information collected by:
Site Location
GPS Coordinates: 45.74405
, -84.66698
T39N
R3W
Sec 27
Owned by State
Fish Passability 0
Perch Height: 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: Square/Rectangle
Inlet Type: Wingwall 10-30 Degree
Outlet Type: Outlet Apron
Structure Material: Concrete
Structure Substrate: Gravel
General Conditions: Poor
Structure Interior: smooth
Dimensions of Structure: Length 40 ft.
, Width 8 ft.
, Height 5.2 ft.
Perch Height: 1 ft.
Structure Inlet
Water Depth: 0.5 ft.
Embedded Depth of Structure: 0.1 ft.
Water Velocity*: 5.8 ft./sec.
Structure Outlet
Water Depth: 0.3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 5.8 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 22 ft.
, Width 25 ft.
, Depth 1.4 ft.
Upstream Pond: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Riffle Information
Water Depth: 0.6 ft.
Bankfull Width: 18 ft.
Wetted Width: 14 ft.
Water Velocity: 2.4 ft./sec.
(Measured with Float Test)
Dominant Substrate: Cobble
Road Information
Gravel
Other Road
(Seasonal)
Road Condition: Good
Road Width at Culvert: 12 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 2.4 ft.
Slope: More than 1:2
Downstream
Fill Depth: 2.7 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
Summary Information
Fish Passability 0
Fish Passage is an area of concern for this site.
Too fast and shallow through culvert for passage (0.3-0.5 depth with 5.8 ft/sec of flow)
A future visit to this site is recommended. If we were to visit this site and MC-017 on US-23, we would be reconnecting many miles of upstream habitat in Mill Creek.