Road Stream Crossing Site S405

Boardman River Watershed, North Branch Boardman River

County Rd 612

Kalkaska Twp, Kalkaska County

GPS Coordinates: 44.7428 , -85.12316

T27N R09W Sec 11, 14

Road Width at Culvert: 30 ft.

Road Surface: Paved

Maintenance: year around

Low Point: At Stream

Existing Drainage Control? no

Any Failings? no

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

Is this crossing constricted? no

Are there adjacent wetlands? yes

Slope: 0%

Vegetation: heavy

Slope: 0%

Vegetation: heavy

Shape: low profile box

Length: 40 ft.

Diameter: 14 ft wide, 5 ft tall ft.

Material: timber

Condition :good

Flow: clear

Fill Depth: 1 ft.

Embankment Slope: 1:1 slope

Fill Depth: 1 ft.

Embankment Slope: 1:1 slope

Stream Width: 18 ft.

Stream Depth: 18 in.

Stream Current: moderate

Stream Substrate: sand

Stream Width: 18 ft.

Stream Depth: 24 in.

Stream Current: moderate

Stream Substrate: sand

Is there Streambank erosion beside the crossing? yes

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

 

Extent of Erosion: minor

Cause of Erosion: road runoff, foot traffic

Action Recommended? no

Add pavement? no

Add paved raised edge? yes

Number of diversion outlets: 4

Increase fill? no

Replace culvert(s)? no

Extend culvert(s)? no

Other Treatments: rock rip rap

Comments: Very minor... crossing looks good.

Add diversion outlets at ends of guard rails.

Add rip rap to eroding bank at outlet.