Road Stream Crossing Site GTBAY_S421
Boardman River Watershed, Bancroft Creek
Townline Rd
Paradise Twp,
Grand Traverse County
Information collected by:
Site Location
GPS Coordinates: 44.578216
, -85.455061
T25N
R10W
Sec 01
Owned by Private
Fish Passability 0.9
Total Erosion: 0.1939 tons/year
Severity: Minor
Year Inventoried: 2020
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: culvert(s)
Structure Shape: Ellipse
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Sand
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 48 ft.
, Width 6.6 ft.
, Height 4.8 ft.
Structure Inlet
Water Depth: 1.5 ft.
Embedded Depth of Structure: 1 ft.
Water Velocity*: 0.3 ft./sec.
Structure Outlet
Water Depth: 0.5 ft.
Embedded Depth of Structure: 2.2 ft.
Water Velocity*: 0.9 ft./sec.
*Water Velocities were measured 0.3 ft. below Surface
(with Meter)
Stream Information
Stream Flow: Less than Bankfull
Riffle Information
Water Depth: 0.4 ft.
Bankfull Width: 7.8 ft.
Wetted Width: 6.6 ft.
Water Velocity: 1.2 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 23 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 1.5 ft.
Slope: More than 1:2
Downstream
Fill Depth: 1.5 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 500 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.5
Erosion: 0.1901 tons/year
Right Approach
Length: 100 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.0038 tons/year
Erosion Information
Total Erosion at Crossing: 0.1939 tons/year
Summary Information
Fish Passability 0.9