Road Stream Crossing Site GTBAY_S913

Boardman River Watershed, Miller Creek
Cass Rd
Garfield Twp, Grand Traverse County
Information collected by:
Site Location
GPS Coordinates: 44.7228 , -85.62589
T27N R11W Sec 22
Owned by Private
Fish Passability 0
Total Erosion: 0.3141 tons/year
Severity: Severe
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: At Stream Grade
Structure Material: Concrete
Structure Substrate: None
General Conditions: Fair
Structure Interior: smooth
Dimensions of Structure: Length 65 ft. , Width 4 ft. , Height 4 ft.
Structure Inlet
Water Depth: 0.8 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 3.4 ft./sec.
Structure Outlet
Water Depth: 0.7 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 8.5 ft./sec.
*Water Velocities were measured 0.4 ft. below Surface (with Meter)
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 20 ft. , Width 14 ft. , Depth 3 ft.
Riffle Information
Water Depth: 0.8 ft.
Bankfull Width: 14.5 ft.
Wetted Width: 9.5 ft.
Water Velocity: 1.7 ft./sec. (Measured with Meter)
Dominant Substrate: Gravel
Road Information
Paved County Road
Road Condition: Fair
Road Width at Culvert: 28 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 5 ft.
Slope: 1:2
Downstream
Fill Depth: 6 ft.
Slope: 1:1.5
Approaches
Left Approach
Length: 200 ft.
Slope: Less Than 1%
Vegetation: Partial
LS Factor: 0.05
Erosion: 0.0093 tons/year
Right Approach
Length: 500 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.64
Erosion: 0.2962 tons/year
Erosion Information
Total Erosion at Crossing: 0.3141 tons/year
Extent of Erosion: Minor
Location of Erosion
Erosion Dimensions
Eroded Material
Material Eroded
Total Erosion
facing downstream
Length
Width
Depth
Reaching Stream?
(tons/year)
Right Upstream Embankment
3 ft.
2 ft.
3 ft.
yes
Sandy Loam
0.0086
Summary Information
Fish Passability 0