Road Stream Crossing Site S715

Boardman River Watershed, Parson's Creek

Lake Rd

Crossing: Lake Road / Parson's Creek

Union Twp, Grand Traverse County

GPS Coordinates: 44.60469 , -85.37359

T26N R09W Sec 34, 35

Road Width at Culvert: 19 ft.

Road Surface: Gravel

Maintenance: year around

Low Point: about 400 feet north of crossing

Existing Drainage Control? no

Any Failings? no

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

Is this crossing constricted? yes

Are there adjacent wetlands? yes

Length: 930 ft.

Slope: 1-5%

Vegetation: partial

Length: 590 ft.

Slope: 1-5%

Vegetation: partial

Shape: round

Length: 30 ft.

Diameter: 2 ft diameter each ft.

Material: galvanized

Condition :good

Flow: fish passage problem

Fill Depth: 1.5 ft.

Embankment Slope: 1:1 slope

Fill Depth: 1.5 ft.

Embankment Slope: 1.5:1 slope

Stream Width: 5 ft.

Stream Depth: 4 in.

Stream Current: moderate

Stream Substrate: sand

Stream Width: 4 ft.

Stream Depth: 4 in.

Stream Current: moderate

Stream Substrate: 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? yes

Is there pooling at the outlet? yes

Is there sand over the crossing? no

 

Extent of Erosion: moderate

Cause of Erosion: undersized culverts, lack of vegetation at inlet

Action Recommended? yes

Add pavement? yes

Pave Left Approach: 930 Lineal Feet

Pave Right Approach: 590 Lineal Feet

Add paved raised edge? yes

Number of diversion outlets: 4

Increase fill? no

Replace culvert(s)? no

Dimensions of replacement: 5 feet wide, low-profile box

Extend culvert(s)? no

Other Treatments: rock riprap, revegetation

Comments: East side of road near inlet has very little vegetation, erosion from road runoff is prevalent. Downstream gravel is from road runoff.