Road Stream Crossing Site GTBAY_BRD019

Boardman River Watershed, Boardman River
Beitner Rd
Blair Twp, Grand Traverse County
Information collected by:
Site Location
GPS Coordinates: 44.67489 , -85.630659
T26N R11W Sec 03
Owned by Private
Fish Passability 0
Total Erosion: 0.3119 tons/year
Severity: Severe
Year Inventoried: 2020
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 2
Structure Shape: Open Bottom Arch
Inlet Type: Mitered
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Rock
General Conditions: Good
Multiple Culverts/Spans
Culvert/Span
Width
Length
Height
Material
1
21 ft.
94 ft.
12 ft.
Metal
2
21 ft.
94 ft.
12 ft.
Metal
Structure Interior: corrugated
Dimensions of Structure: Length 94 ft. , Width 21 ft. , Height 12 ft.
Structure Inlet
Water Depth: 4 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 4.7 ft./sec.
Structure Outlet
Water Depth: 5 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
Water depth and velocity measurements recorded for culvert #1
Stream Information
Stream Flow: Less than Bankfull
Riffle Information
Water Depth: 3.4 ft.
Bankfull Width: 60 ft.
Wetted Width: 50 ft.
Water Velocity: 2.5 ft./sec. (Measured with Meter)
Dominant Substrate: Gravel
Road Information
Paved County Road
Road Condition: Good
Road Width at Culvert: 37 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 3.5 ft.
Slope: 1:2
Downstream
Fill Depth: 3.5 ft.
Slope: 1:2
Approaches
Left Approach
Length: 500 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.5
Erosion: 0.3058 tons/year
Right Approach
Length: 100 ft.
Slope: Less Than 1%
Vegetation: Partial
LS Factor: 0.05
Erosion: 0.0061 tons/year
Erosion Information
Total Erosion at Crossing: 0.3119 tons/year
Summary Information
Fish Passability 0
These non-native species were observerd at this site: Sweet White Clover, Spotted Knapweed