Road Stream Crossing Site S708

Boardman River Watershed, Twenty-two Creek Tributary
Snowmobile Trail
Union Twp, Grand Traverse County
Information collected by:
Grand Travese Conservation District
GPS Coordinates: 44.62375 , -85.39388
T26N R09W Sec 27, 28
Adjacent Land Owned by State
Severity: Minor
Site Location
 
Inlet
Outlet
Road Approach - Left
Road Approach - Right
Crossing Information
Road Width at Culvert: 10 ft.
Road Surface: Gravel
Low Point: 100 feet North and South of crossing
Existing Drainage Control? no
Any Failings? no
Type of Crossing: culvert(s) (single culvert)
Is this crossing constricted? yes
Are there adjacent wetlands? yes
Approaches
Left Approach
Length: 750 ft.
Slope: 1-5%
Vegetation: heavy
Right Approach
Length: 260 ft.
Slope: 1-5%
Vegetation: heavy
Culvert Information
Shape: round
Length: 22 ft.
Diameter: 3 ft diameter ft.
Material: galvanized
Condition :good
Flow: clear
Embankments
Upstream
Fill Depth: 0.5 ft.
Embankment Slope: vertical
Downstream
Fill Depth: 1 ft.
Embankment Slope: 1:1 slope
Stream Information
Upstream
Stream Width: 2 ft.
Stream Depth: 2 in.
Stream Current: slow
Stream Substrate: sand
Downstream
Stream Width: 2 ft.
Stream Depth: 2 in.
Stream Current: slow
Stream Substrate: sand,gravel
Erosion Information
Conditions
Is there Streambank erosion beside the crossing? no
Is there embankment erosion? yes
Is there erosion at the culvert outlet? no
Is there erosion at the shoulder and/or ditch? yes
Is there pooling at the outlet? no
Is there sand over the crossing? no
 
Extent of Erosion: minor
Cause of Erosion: undersized culvert
Recommended Treatments
Action Recommended? yes
Add pavement? no
Add paved raised edge? no
Increase fill? no
Replace culvert(s)? no
Dimensions of replacement: 3 ft diameter, round, galvanized, 45 ft long
Extend culvert(s)? no
Other Treatments: rock riprap, revegetation
Comments: Culvert inlet not buried deep enough. Old wooden deflector on right side of inlet embankment. Gravel downstream from minor shoulder erosion.
 
Severity:Minor
This page last updated on 2/9/2022.