Road Stream Crossing Site S820

Boardman River Watershed, Robbin's Creek

Private Drive

Garfield Twp, Grand Traverse County

GPS Coordinates: 44.69955 , -85.63739

T27N R11W Sec 33

Road Width at Culvert: 9 ft.

Road Surface: Sand

Maintenance: seasonal

Low Point: At Stream

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: 6-10%

Vegetation: partial

Slope: 6-10%

Vegetation: partial

Shape: round

Length: 16 ft.

Diameter: 2 ft diameter ft.

Material: concrete

Condition :good

Flow: clear

Fill Depth: 1.5 ft.

Embankment Slope: vertical

Fill Depth: 1 ft.

Embankment Slope: vertical

Stream Width: 6 ft.

Stream Depth: 4 in.

Stream Current: moderate

Stream Substrate: sand

Stream Width: 6 ft.

Stream Depth: 4 in.

Stream Current: moderate

Stream Substrate: sand,gravel

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

 

Extent of Erosion: moderate

Cause of Erosion: storm flows, highwater, foot traffic

Action Recommended? yes

Add pavement? no

Add paved raised edge? no

Increase fill? no

Replace culvert(s)? no

Dimensions of replacement: 7.5 ft w, 3.5 ft h, 25 ft l, galvanized arc pipe

Extend culvert(s)? no

Other Treatments: rock rip rap (use existing), revegetation

Comments: Crossing appears to receive little use. Lots of rip rap at inlet and outlet, which is good. Hay bales have been used in an attempt to stop erosion at outlet.

Treatments: Crossing should be removed. If its use warrants maintenance, then the culv