Road Stream Crossing Site LM082

Manistee River Watershed, Little Manistee River
Waters Rd
Stronach Twp, Manistee County
Information collected by:
Site Location
GPS Coordinates: 44.208835 , -86.276586
T21N R16W Sec 21
Owned by Federal
Fish Passability 0.5
Total Erosion: 0.2049 tons/year
Severity: Moderate
Year Inventoried: 2019
Inlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Erosion
Other
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 3
Structure Shape: Pipe Arch
Inlet Type: Mitered
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Mixture
General Conditions: Fair
Multiple Culverts/Spans
Culvert/Span
Width
Length
Height
Material
1
10 ft.
80 ft.
8.5 ft.
Metal
2
10 ft.
80 ft.
8.5 ft.
Metal
3
10 ft.
80 ft.
8.5 ft.
Metal
Structure Interior: corrugated
Dimensions of Structure: Length 80 ft. , Width 10 ft. , Height 8.5 ft.
Structure Inlet
Water Depth: 6.8 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2 ft./sec.
Structure Outlet
Water Depth: 6.8 ft.
Embedded Depth of Structure: 0.2 ft.
Water Velocity*: 2.4 ft./sec.
*Water Velocities were measured 1.8 ft. below Surface (with Meter)
Additional Comments
Additional notes due to previous flooding; values from culvert 2; rifle estimated
Stream Information
Stream Flow: More than Bankfull
Riffle Information
Water Depth: 7 ft.
Bankfull Width: 80 ft.
Wetted Width: 80 ft.
Water Velocity: 2 ft./sec.
Road Information
Paved Federal Road
Road Condition: Good
Road Width at Culvert: 32 ft.
Location of Low Point: Other
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 6 ft.
Slope: 1:1.5
Downstream
Fill Depth: 6 ft.
Slope: 1:1
Approaches
Left Approach
Length: 150 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.0079 tons/year
Right Approach
Length: 250 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.44
Erosion: 0.1164 tons/year
Erosion Information
Total Erosion at Crossing: 0.2049 tons/year
Extent of Erosion: Moderate
Location of Erosion
Erosion Dimensions
Eroded Material
Material Eroded
Total Erosion
facing downstream
Length
Width
Depth
Reaching Stream?
(tons/year)
Left Downstream Embankment
3 ft.
6 ft.
4 ft.
yes
Sandy Loam
0.0806
Summary Information
Fish Passability 0.5
These non-native species were observerd at this site: Bull Thistle and Knappweed