Road Stream Crossing Site PM_M044

Pere Marquette River Watershed, Pere Marquette River
Custer Rd
Custer Twp, Mason County
Information collected by:
Site Location
GPS Coordinates: 43.93693 , -86.2187
T18N R16W Sec 22
Owned by Local Government
Federal
Fish Passability 0.9
Total Erosion: 1.674 tons/year
Severity: Moderate
Year Inventoried: 2014
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: Bridge
Structure Shape: Open Bottom Square/Rectangle
Outlet Type: At Stream Grade
Structure Material: Concrete
Structure Substrate: Mixture
General Conditions: Good
Multiple Culverts/Spans
Culvert/Span
Width
Length
Height
Material
1
54 ft.
29 ft.
15 ft.
2
54 ft.
29 ft.
15 ft.
3
58 ft.
29 ft.
15 ft.
Dimensions of Structure: Length 29 ft. , Width 166 ft. , Height 15 ft.
Structure Inlet
Water Depth: 3.5 ft.
Water Velocity*: 1.5 ft./sec.
Structure Outlet
Water Depth: 3 ft.
Water Velocity*: 1.5 ft./sec.
*Water Velocities were measured 2 ft. below Surface (with Meter)
Stream Information
Stream Flow: Less than Bankfull
Riffle Information
Water Depth: 3 ft.
Bankfull Width: 145 ft.
Wetted Width: 140 ft.
Water Velocity: 1.5 ft./sec. (Measured with Meter)
Dominant Substrate: Sand
Road Information
Paved County Road
Road Condition: Good
Road Width at Culvert: 24 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Slope: Vertical
Slope: Vertical
Approaches
Left Approach
Length: 150 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.4
Erosion: 0.0476 tons/year
Right Approach
Length: 1000 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 2.05
Erosion: 1.6264 tons/year
Erosion Information
Total Erosion at Crossing: 1.674 tons/year
Summary Information
Fish Passability 0.9
Fish Passage is an area of concern for this site.