Road Stream Crossing Site GTBAY_BRD015
Boardman River Watershed, Boardman River
Shumsky Rd
Blair Twp,
Grand Traverse County
Information collected by:
Site Location
GPS Coordinates: 44.648233
, -85.587706
T26N
R11W
Sec 13
Owned by Private
Fish Passability 0.9
Total Erosion: 0.0093 tons/year
Severity: Minor
Year Inventoried: 2020
Inlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: Bridge
Structure Shape: Open Bottom Square/Rectangle
Inlet Type: Headwall
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Sand
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 13.5 ft.
, Width 37 ft.
, Height 6.5 ft.
Structure Inlet
Water Depth: 4 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 3.2 ft./sec.
Structure Outlet
Water Depth: 4 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 3.2 ft./sec.
*Water Velocities were measured 2.4 ft. below Surface
(with Meter)
Additional Comments
Structure wide and structure water velocity in line with riffle water velocities in system. Severity score equals 10 so considered minor.
Stream Information
Stream Flow: Less than Bankfull
Riffle Information
Water Depth: 3.5 ft.
Bankfull Width: 51 ft.
Wetted Width: 45 ft.
Water Velocity: 1.9 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Gravel
Private Road
Road Condition: Good
Road Width at Culvert: 13.5 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: 25 ft.
Slope: Less Than 1%
Vegetation: Partial
LS Factor: 0.05
Erosion: 0.0046 tons/year
Right Approach
Length: 25 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.0046 tons/year
Erosion Information
Total Erosion at Crossing: 0.0093 tons/year
Summary Information
Fish Passability 0.9