Road Stream Crossing Site GTBAY_S712

Boardman River Watershed, Carpenter Creek
Two-Track off Boardman Road
Union Twp, Grand Traverse County
Information collected by:
Site Location
GPS Coordinates: 44.646887 , -85.3576
T26N R9W Sec 14
Owned by State
Total Erosion: 0.2975 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: Round
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Sand
General Conditions: Fair
Structure Interior: corrugated
Structure is Rusted through
Dimensions of Structure: Length 25 ft. , Width 1.5 ft. , Height 1.5 ft.
Structure Inlet
Water Depth: 0.9 ft.
Embedded Depth of Structure: 0.3 ft.
Water Velocity*: 0.5 ft./sec.
Structure Outlet
Water Depth: 0.5 ft.
Embedded Depth of Structure: 0.5 ft.
Water Velocity*: 1 ft./sec.
*Water Velocities were measured 0.6 ft. below Surface (with Meter)
Stream Information
Stream Flow: More than Bankfull
Riffle Information
Water Depth: 0.4 ft.
Wetted Width: 40 ft.
Water Velocity: 0 ft./sec. (Measured with Float Test)
Dominant Substrate: Organics
Road Information
Sand Other Road
Road Condition: Poor
Road Width at Culvert: 9 ft.
Location of Low Point: Other
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 2.5 ft.
Slope: 1:2
Downstream
Fill Depth: 2.5 ft.
Slope: 1:2
Approaches
Left Approach
Length: 150 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.4
Erosion: 0.1488 tons/year
Right Approach
Length: 150 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.4
Erosion: 0.1488 tons/year
Erosion Information
Total Erosion at Crossing: 0.2975 tons/year
Summary Information