Road Stream Crossing Site GTBAY_S910

Boardman River Watershed, Miller Creek Tributary
Driveway off Cass Rd
Garfield Twp, Grand Traverse County
Information collected by:
Site Location
GPS Coordinates: 44.71908 , -85.62601
T27N R11W Sec 22
Owned by Private
Fish Passability 0.9
Total Erosion: 0.037 tons/year
Severity: Moderate
Year Inventoried: 2020
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: culvert(s)
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: Outlet Apron
Structure Material: Concrete
Structure Substrate: Sand
General Conditions: Poor
Structure Interior: corrugated
Dimensions of Structure: Length 60 ft. , Width 1.5 ft. , Height 1.5 ft.
Structure Inlet
Water Depth: 1.5 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.2 ft./sec.
Structure Outlet
Water Depth: 0.7 ft.
Embedded Depth of Structure: 0.2 ft.
Water Velocity*: 0.4 ft./sec.
*Water Velocities were measured 0.8 ft. below Surface (with Meter)
Stream Information
Stream Flow: Less than Bankfull
Riffle Information
Water Depth: 0.6 ft.
Bankfull Width: 11 ft.
Wetted Width: 3 ft.
Water Velocity: 0.5 ft./sec. (Measured with Meter)
Dominant Substrate: Sand
Road Information
Gravel Private Road
Road Condition: Fair
Road Width at Culvert: 28 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 4 ft.
Slope: Vertical
Downstream
Fill Depth: 4 ft.
Slope: Vertical
Approaches
Left Approach
Length: 25 ft.
Slope: Less Than 1%
Vegetation: Partial
LS Factor: 0.05
Erosion: 0.0096 tons/year
Right Approach
Length: 15 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.22
Erosion: 0.0255 tons/year
Erosion Information
Total Erosion at Crossing: 0.037 tons/year
Extent of Erosion: Minor
Notes: Seems inlet is too small. Eroding around inlet
Location of Erosion
Erosion Dimensions
Eroded Material
Material Eroded
Total Erosion
facing downstream
Length
Width
Depth
Reaching Stream?
(tons/year)
Left Upstream Embankment
2 ft.
4 ft.
1 ft.
yes
Sandy Loam
0.0019
Summary Information
Fish Passability 0.9
These non-native species were observerd at this site: Spotted Knapweed, Autumn Olive, Sweet white clover