Road Stream Crossing Site BSAB_BS81
Big Sable River Watershed, Tributary of Big Sable River
Quarter Line Rd
Grant Twp,
Mason County
Information collected by:
Site Location
GPS Coordinates: 44.08698
, -86.33047
T20N
R17W
Sec 34
Owned by Private
Fish Passability 1
Structure is NOT Perched
Total Erosion: 4.7438 tons/year
Severity: Severe
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: Open Bottom Arch
Inlet Type: Headwall
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Sand
General Conditions: Fair
Structure Interior: corrugated
Dimensions of Structure: Length 90 ft.
, Width 18 ft.
, Height 5 ft.
Percentage Crushed:
In Pipe: 1% to 25%
Structure is NOT Perched
Structure Inlet
Water Depth: 2.51 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.1 ft./sec.
Structure Outlet
Water Depth: 0.95 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.05 ft./sec.
*Water Velocities were measured 0.57 ft. below Surface
(with Meter)
Additional Comments
1) The top, center of the culvert is showing signs of failing
2) culvert placed right of natural stream bed
Stream Information
Stream Flow: Less than Bankfull
Riffle Information
Water Depth: 0.4 ft.
Bankfull Width: 10.3 ft.
Wetted Width: 7.2 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: 35 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 6 ft.
Slope: 1:1
Downstream
Fill Depth: 5.5 ft.
Slope: 1:1.5
Approaches
Left Approach
Length: 1000 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 2.05
Erosion: 2.3719 tons/year
Right Approach
Length: 1000 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 2.05
Erosion: 2.3719 tons/year
Erosion Information
Total Erosion at Crossing: 4.7438 tons/year
Extent of Erosion: Stabilized
Location of Erosion | Erosion Dimensions | Eroded Material | Material Eroded | Total Erosion | ||
facing downstream | Length | Width | Depth | Reaching Stream? | (tons/year) | |
Left Upstream Embankment |
20 ft. |
15 ft. |
2 ft. |
yes |
Sandy Loam |
0 |
Summary Information
Fish Passability 1
These non-native species were observerd at this site: Knapweed