Road Stream Crossing Site CLHW_BC-001
Big Creek Watershed, Unnamed Stream
N Briggs Rd
Mason Twp,
Arenac County
Information collected by:
Site Location
GPS Coordinates: 44.12586
, -83.92744
T20N
R5E
Sec 18
Owned by Private
Fish Passability 0.9
Structure is NOT Perched
Total Erosion: 7.035 tons/year
Severity: Severe
Year Inventoried: 2016
Site ID
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 1
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Sand
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 65 ft.
, Width 4 ft.
, Height 4 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 0.3 ft.
Embedded Depth of Structure: 0.1 ft.
Water Velocity*: 0.5 ft./sec.
Structure Outlet
Water Depth: 1 ft.
Embedded Depth of Structure: 0.1 ft.
Water Velocity*: 0.1 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Scour Pool: Length 6 ft.
, Width 6 ft.
, Depth 1 ft.
Upstream Pond: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Riffle Information
Water Depth: 0.2 ft.
Bankfull Width: 3.3 ft.
Wetted Width: 2 ft.
Water Velocity: 0.3 ft./sec.
(Measured with Float Test)
Dominant Substrate: Gravel
Road Information
Gravel
County Road
Road Condition: Fair
Road Width at Culvert: 24 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 2 ft.
Slope: More than 1:2
Downstream
Fill Depth: 2.4 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 3.7686 tons/year
Right Approach
Length: 340 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 1.452
Erosion: 3.264 tons/year
Erosion Information
Total Erosion at Crossing: 7.035 tons/year
Extent of Erosion: Minor
Notes: Around culvert inlet
Location of Erosion | Erosion Dimensions | Eroded Material | Material Eroded | Total Erosion | ||
facing downstream | Length | Width | Depth | Reaching Stream? | (tons/year) | |
Left Upstream Streambank |
1.8 ft. |
1 ft. |
1.5 ft. |
yes |
Loam |
0.0024 |
Summary Information
Fish Passability 0.9