Road Stream Crossing Site GTBAY_BRD012
Boardman River Watershed, Boardman River
Garfield Rd
Paradise Twp,
Grand Traverse County
Information collected by:
Site Location
GPS Coordinates: 44.636918
, -85.518205
T26N
R10W
Sec 21
Owned by Private
Fish Passability 1
Total Erosion: 0.2639 tons/year
Severity: Minor
Year Inventoried: 2020
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: Bridge
Structure Shape: Open Bottom Square/Rectangle
Inlet Type: Wingwall 10-30 Degree
Outlet Type: At Stream Grade
Structure Material: Concrete
Structure Substrate: Mixture
General Conditions: Good
Structure Interior: smooth
Dimensions of Structure: Length 31 ft.
, Width 67 ft.
, Height 6.5 ft.
Structure Inlet
Water Depth: 2.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2.5 ft./sec.
Structure Outlet
Water Depth: 2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2.6 ft./sec.
*Water Velocities were measured 1.2 ft. below Surface
(with Meter)
Additional Comments
Structure width greater than bank full and structure water velocity in line with riffle water velocity. Severity score equals 13.5 so considered minor.
Stream Information
Stream Flow: Less than Bankfull
Riffle Information
Water Depth: 3 ft.
Bankfull Width: 38 ft.
Wetted Width: 34 ft.
Water Velocity: 2.5 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 31 ft.
Location of Low Point: Other
Runoff Path: Ditch
Fill Depth: 0 ft.
Slope: Vertical
Fill Depth: 0 ft.
Slope: Vertical
Approaches
Left Approach
Length: 150 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.0077 tons/year
Right Approach
Length: 500 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.5
Erosion: 0.2562 tons/year
Erosion Information
Total Erosion at Crossing: 0.2639 tons/year
Summary Information
Fish Passability 1