Road Stream Crossing Site GTBAY_S933

Boardman River Watershed, Jackson Creek Tributary
Marsh Rd
Paradise Twp, Grand Traverse County
Information collected by:
Site Location
GPS Coordinates: 44.59885 , -85.47589
T25N R10W Sec 02
Owned by Private
Fish Passability 0
Perch Height: 0.5 ft.
Total Erosion: 1.5435 tons/year
Severity: Severe
Year Inventoried: 2020
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Erosion
Erosion
Crossing Information
Type of Crossing: culvert(s)
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: Freefall into Pool
Structure Material: Metal
Structure Substrate: None
General Conditions: Poor
Structure Interior: corrugated
Structure is Rusted through
Dimensions of Structure: Length 60 ft. , Width 2 ft. , Height 2 ft.
Perch Height: 0.5 ft.
Structure Inlet
Water Depth: 0.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1.2 ft./sec.
Structure Outlet
Water Depth: 0.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1.2 ft./sec.
*Water Velocities were measured at the Surface (with Meter)
Stream Information
Stream Flow: Less than Bankfull
Riffle Information
Water Depth: 0.7 ft.
Bankfull Width: 2.5 ft.
Wetted Width: 1.9 ft.
Water Velocity: 0.1 ft./sec. (Measured with Float Test)
Dominant Substrate: Sand
Road Information
Gravel County Road
Road Condition: Fair
Road Width at Culvert: 21 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 5.3 ft.
Slope: 1:2
Downstream
Fill Depth: 7 ft.
Slope: 1:1.5
Approaches
Left Approach
Length: 175 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.415
Erosion: 0.4201 tons/year
Right Approach
Length: 100 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.0289 tons/year
Erosion Information
Total Erosion at Crossing: 1.5435 tons/year
Extent of Erosion: Severe
Notes: Erosion shelf about 4 feet tall and 2 feet from the road.
Location of Erosion
Erosion Dimensions
Eroded Material
Material Eroded
Total Erosion
facing downstream
Length
Width
Depth
Reaching Stream?
(tons/year)
Right Downstream Embankment
8 ft.
4 ft.
4 ft.
yes
Sandy Loam
0.6144
Left Downstream Embankment
8 ft.
4 ft.
3 ft.
yes
Gravelly Loam
0.48
Summary Information
Fish Passability 0
Erosion is an area of concern for this site. Erosion approaching road
A future visit to this site is recommended. State of erosion and road safety
These non-native species were observerd at this site: Black Locust