Road Stream Crossing Site BT_G006

Betsie River Watershed, Mason Creek
Mill Rd
Blair Twp, Grand Traverse County
Information collected by:
GPS Coordinates: 44.61834 , -85.62746
T26N R11W Sec 27
Owned by Private
Fish Passability 0
Structure is NOT Perched
Total Erosion: 3.6263 tons/year
Severity: Severe
Year Inventoried: 2014
Site Location
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: culvert(s)
Number of Culverts: 1
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Sand
General Conditions: Fair
Structure Interior: corrugated
Dimensions of Structure: Length 24 ft. , Width 1.5 ft. , Height 1.5 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 0.9 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 5.8 ft./sec.
Structure Outlet
Water Depth: 0.7 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 5.8 ft./sec.
*Water Velocities were measured at the Surface (with Float Test)
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 10 ft. , Width 8.8 ft. , Depth 1.3 ft.
Upstream Pond: Length 0 ft. , Width 0 ft. , Depth 0 ft.
Riffle Information
Water Depth: 0.4 ft.
Bankfull Width: 3.3 ft.
Wetted Width: 3 ft.
Water Velocity: 2 ft./sec. (Measured with Float Test)
Dominant Substrate: Sand
Road Information
Gravel County Road
Road Condition: Poor
Road Width at Culvert: 19.5 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 0.5 ft.
Slope: More than 1:2
Downstream
Fill Depth: 1.8 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 750 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.543
Erosion: 2.1857 tons/year
Right Approach
Length: 530 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.506
Erosion: 1.4406 tons/year
Erosion Information
Total Erosion at Crossing: 3.6263 tons/year
Summary Information
Fish Passability 0