Road Stream Crossing Site B-069

Betsie River Watershed, Rice Creek

Grace Rd

Benzonia Twp, Benzie County

GPS Coordinates: 44.6034917 , -86.11503948

T26N R15W Sec 34

Road Width at Culvert: 22 ft.

Road Surface: Paved

Maintenance: year around

Low Point: 50 ft. left approach

Existing Drainage Control? no

Any Failings? no

Type of Crossing: culvert(s) (single culvert)

Is this crossing constricted? no

Are there adjacent wetlands? yes

Comments: Pond at inlet and outlet.

Length: 1300 ft.

Slope: 1-5%

Vegetation: partial

Length: 260 ft.

Slope: 1-5%

Vegetation: partial

Length: 35 ft.

Diameter: 48 ft.

Material: concrete

Condition :fair

Flow: clear

Fill Depth: 7 ft.

Embankment Slope: 1:1

Fill Depth: 5 ft.

Embankment Slope: 1:1

Stream Width: 90 ft.

Stream Depth: 3 in.

Stream Current: slow

Stream Width: 90 ft.

Stream Depth: 3 in.

Stream Current: slow

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? no

Is there pooling at the outlet? no

Is there sand over the crossing? no

Other Conditions: Pond restricting natural flow.

 

Extent of Erosion: moderate

Cause of Erosion: Large ponds at inlet, outlet.

Action Recommended? no

Add pavement? no

Add paved raised edge? no

Number of erosion control structures: 0

Number of sediment basins: 1

Number of diversion outlets: 0

Increase fill? no

Replace culvert(s)? no

Dimensions of replacement: 1

Extend culvert(s)? no

Lineal feet to extend: 1

Other Treatments: Revegetate & regrade embankment. Eradicate ponds for natural flow.

Comments: Ponds warming water and causing embankment erosion.