Road Stream Crossing Site PLT-H-7

Platte River Watershed, Tributary to Carter Creek

Brownell Rd

Homestead Twp, Benzie County

GPS Coordinates: 44.64185 , -85.99173

T26 R14 Sec 22

Road Width at Culvert: 25 ft.

Road Surface: Paved

Maintenance: year around

Low Point: Other

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: Stream is incised at outlet and a gravel bar at outlet immediately shifts stream to right

Length: 150 ft.

Slope: 6-10%

Vegetation: partial

Length: 500 ft.

Slope: 0%

Vegetation: partial

Length: 50 ft.

Diameter: 2 ft.

Material: concrete

Condition :fair

Flow: fish passage problem

Fill Depth: 7 ft.

Embankment Slope: 1:1

Fill Depth: 10 ft.

Embankment Slope: 1.5:1

Stream Width: 3 ft.

Stream Depth: 0.1 in.

Stream Current: moderate

Stream Substrate: sand,gravel

Stream Width: 3 ft.

Stream Depth: 0.1 in.

Stream Current: moderate

Stream Substrate: sand,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: moderate

Cause of Erosion: Severe gradient in culvert increasing velocity

Action Recommended? no

Add pavement? no

Pave Left Approach: 0 Lineal Feet

Pave Right Approach: 0 Lineal Feet

Add paved raised edge? no

Number of erosion control structures: 0

Number of sediment basins: 0

Number of diversion outlets: 0

Increase fill? no

Replace culvert(s)? yes

Extend culvert(s)? no

Lineal feet to extend: 0

Comments: Culvert is structurally failing and is placed with gradient

 

Total Points:0