Road Stream Crossing Site BSAB_BS63
Big Sable River Watershed, Tributary of Big Sable River
US-31
Sherman Twp,
Mason County
Information collected by:
Site Location
GPS Coordinates: 44.07083
, -86.2802
T19N
R16W
Sec 6
Owned by Private
Structure is NOT Perched
Total Erosion: 0.1818 tons/year
Severity: Minor
Year Inventoried: 2011
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: Square/Rectangle
Inlet Type: Wingwall 30-70 Degree
Outlet Type: At Stream Grade
Structure Material: Concrete
Structure Substrate: Mixture
General Conditions: Good
Structure Interior: smooth
Dimensions of Structure: Length 90 ft.
, Width 12 ft.
, Height 6 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 0.35 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 ft./sec.
Structure Outlet
Water Depth: 0.22 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 ft./sec.
*Water Velocities were measured at the Surface
(with Meter)
Additional Comments
1) stagnant water was standing in the culvert and at the inlet and outlet but upstream and downstream were dry at the time of data collection 2) culvert makes a 35 degree turn under roadway
Stream Information
Stream Flow: None
Riffle Information
Water Depth: 0 ft.
Bankfull Width: 9 ft.
Wetted Width: 0 ft.
Water Velocity: 0 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Paved
Federal Road
Road Condition: Good
Road Width at Culvert: 50 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 3.7 ft.
Slope: 1:2
Downstream
Fill Depth: 3.6 ft.
Slope: 1:2
Approaches
Left Approach
Length: 1000 ft.
Slope: Less Than 1%
Vegetation: Partial
LS Factor: 0.06
Erosion: 0.0992 tons/year
Right Approach
Length: 1000 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.0826 tons/year
Erosion Information
Total Erosion at Crossing: 0.1818 tons/year
Extent of Erosion: Moderate
Summary Information
Erosion is an area of concern for this site.