Road Stream Crossing Site MAN_MI_017
Big Manistee River Watershed, Unknown (tributary to Hopkins Creek)
M-66
Caldwell Twp,
Missaukee County
Information collected by:
Site Location
GPS Coordinates: 44.40717
, -85.21732
T23N
R8W
Sec 12
Owned by Private
State
State
Structure is NOT Perched
Total Erosion: 0.6204 tons/year
Severity: Moderate
Year Inventoried: 2014
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: Apron
Outlet Type: Outlet Apron
Structure Material: Metal
Structure Substrate: None
General Conditions: Fair
Structure Interior: corrugated
Dimensions of Structure: Length 235 ft.
, Width 2 ft.
, Height 2 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 0.5 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1.3 ft./sec.
Structure Outlet
Water Depth: 0.6 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 3 ft./sec.
*Water Velocities were measured at the Surface
(with Meter)
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 13 ft.
, Width 12.5 ft.
, Depth 1.2 ft.
Upstream Pond: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Riffle Information
Water Depth: 0.6 ft.
Bankfull Width: 7 ft.
Wetted Width: 4.7 ft.
Water Velocity: 0.6 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Paved
State Road
Road Condition: Good
Road Width at Culvert: 46 ft.
Location of Low Point: Other
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 14 ft.
Slope: More than 1:2
Downstream
Fill Depth: 11.1 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 0 ft.
Slope: Less Than 1%
Vegetation: Partial
LS Factor: 0.05
Erosion: 0 tons/year
Right Approach
Length: 600 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.68
Erosion: 0.6204 tons/year
Erosion Information
Total Erosion at Crossing: 0.6204 tons/year
Extent of Erosion: Moderate
Summary Information
Erosion is an area of concern for this site.