Road Stream Crossing Site GTBAY_S426
Boardman River Watershed, Bancroft Creek
Marsh Rd
Paradise Twp,
Grand Traverse County
Information collected by:
Site Location
GPS Coordinates: 44.59893
, -85.4643
T26N
R10W
Sec 36
Owned by Private
Fish Passability 1
Total Erosion: 2.6956 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: Pipe Arch
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Sand
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 81.5 ft.
, Width 12.5 ft.
, Height 7.5 ft.
Structure Inlet
Water Depth: 0.6 ft.
Embedded Depth of Structure: 1 ft.
Water Velocity*: 1.5 ft./sec.
Structure Outlet
Water Depth: 0.6 ft.
Embedded Depth of Structure: 1.3 ft.
Water Velocity*: 1.4 ft./sec.
*Water Velocities were measured 0.3 ft. below Surface
(with Meter)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Riffle Information
Water Depth: 0.6 ft.
Bankfull Width: 10.6 ft.
Wetted Width: 9.6 ft.
Water Velocity: 1.3 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Sand
County Road
Road Condition: Poor
Road Width at Culvert: 38 ft.
Location of Low Point: Other
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 6 ft.
Slope: 1:2
Downstream
Fill Depth: 6 ft.
Slope: 1:2
Approaches
Left Approach
Length: 150 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.0785 tons/year
Right Approach
Length: 500 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.5
Erosion: 2.6171 tons/year
Erosion Information
Total Erosion at Crossing: 2.6956 tons/year
Summary Information
Fish Passability 1
These non-native species were observerd at this site: Autumn Olive