Road Stream Crossing Site GTBAY_S938
Boardman River Watershed, Boardman River
Jorae Drive
Blair Twp,
Grand Traverse County
Information collected by:
Site Location
GPS Coordinates: 44.673042
, -85.624415
T26N
R11W
Sec 03
Owned by Private
Fish Passability 1
Total Erosion: 0.0475 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: Other
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Rock
General Conditions: Fair
Structure Interior: smooth
Dimensions of Structure: Length 10 ft.
, Width 50 ft.
, Height 9 ft.
Structure Inlet
Water Depth: 4.5 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 3.4 ft./sec.
Structure Outlet
Water Depth: 4.5 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 3.4 ft./sec.
*Water Velocities were measured 1 ft. below Surface
(with Meter)
Additional Comments
Open bottom bridge, structure water velocities consistent with riffle velocity. Faster section, not a fish passage issue.
Stream Information
Stream Flow: Less than Bankfull
Riffle Information
Water Depth: 1.5 ft.
Bankfull Width: 70 ft.
Wetted Width: 60 ft.
Water Velocity: 3.8 ft./sec.
(Measured with Meter)
Dominant Substrate: Cobble
Road Information
Gravel
Private Road
Road Condition: Fair
Road Width at Culvert: 10 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: Heavy
LS Factor: 0.05
Erosion: 0.0034 tons/year
Right Approach
Length: 50 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.32
Erosion: 0.0441 tons/year
Erosion Information
Total Erosion at Crossing: 0.0475 tons/year
Summary Information
Fish Passability 1
These non-native species were observerd at this site: Autumn Olive