Road Stream Crossing Site LM078

Manistee River Watershed, Little Manistee River Tributary
Pomeroy Springs Rd
Stronach Twp, Manistee County
Information collected by:
Site Location
GPS Coordinates: 44.173707 , -86.091085
T21N R15W Sec 35
Owned by Private
Fish Passability 0
Perch Height: 0.3 ft.
Total Erosion: 0.0716 tons/year
Severity: Severe
Year Inventoried: 2019
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: Pipe Arch
Inlet Type: Mitered
Outlet Type: Freefall into Pool
Structure Material: Metal
Structure Substrate: None
General Conditions: Poor
Structure Interior: corrugated
Dimensions of Structure: Length 70.5 ft. , Width 6.4 ft. , Height 4.5 ft.
Perch Height: 0.3 ft.
Structure Inlet
Water Depth: 0.5 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1.5 ft./sec.
Structure Outlet
Water Depth: 0.5 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2.3 ft./sec.
*Water Velocities were measured 0.3 ft. below Surface (with Meter)
Additional Comments
Additional notes due to extreme flooding
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 40 ft. , Width 20 ft. , Depth 5 ft.
Riffle Information
Water Depth: 1.1 ft.
Bankfull Width: 8.3 ft.
Wetted Width: 7.3 ft.
Water Velocity: 0.2 ft./sec. (Measured with Meter)
Dominant Substrate: Sand
Road Information
Paved County Road
Road Condition: Fair
Road Width at Culvert: 22 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 2 ft.
Slope: More than 1:2
Downstream
Fill Depth: 2.5 ft.
Slope: 1:2
Approaches
Left Approach
Length: 50 ft.
Slope: Less Than 1%
Vegetation: Partial
LS Factor: 0.05
Erosion: 0.0018 tons/year
Right Approach
Length: 200 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.48
Erosion: 0.0698 tons/year
Erosion Information
Total Erosion at Crossing: 0.0716 tons/year
Summary Information
Fish Passability 0
Fish Passage is an area of concern for this site. Perched outlet
A future visit to this site is recommended. Perched outlet
These non-native species were observerd at this site: Knappweed