Road Stream Crossing Site S069

Boardman River Watershed, Robbin's Creek

Railroad & Cass Rd

Crossing: Cass Road / Robbin's Creek

Garfield Twp, Grand Traverse County

GPS Coordinates: 44.70243 , -85.62589

T27N R11W Sec 27

Road Width at Culvert: 21 ft.

Road Surface: Paved

Maintenance: year around

Low Point: Flat

Existing Drainage Control? no

Any Failings? no

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

Is this crossing constricted? yes

Are there adjacent wetlands? yes

Slope: 0%

Vegetation: heavy

Slope: 0%

Vegetation: heavy

Shape: round

Length: 125 ft.

Diameter: 1.5 ft diameter ft.

Material: steel

Condition :poor

Flow: fish passage problem

Fill Depth: 18 ft.

Embankment Slope: 1:1 slope

Fill Depth: 24 ft.

Embankment Slope: 1:1 slope

Stream Width: 5 ft.

Stream Depth: 3 in.

Stream Current: fast

Stream Substrate: gravel

Stream Width: 8 ft.

Stream Depth: 2 in.

Stream Current: fast

Stream Substrate: gravel

Is there Streambank erosion beside the crossing? yes

Is there embankment erosion? yes

Is there erosion at the culvert outlet? yes

Is there erosion at the shoulder and/or ditch? no

Is there pooling at the outlet? yes

Is there sand over the crossing? no

 

Extent of Erosion: severe

Cause of Erosion: Ridiculously inadequate culvert

Action Recommended? yes

Add pavement? no

Add paved raised edge? no

Increase fill? no

Replace culvert(s)? no

Extend culvert(s)? no

Comments: Massive plunge pool at outlet. Approximately 12 ft wide, 36 inches deep.

Culvert replacement must be included in future work plans.