Road Stream Crossing Site S724

Boardman River Watershed, Jaxon Creek

Snowmobile Trail

Paradise Twp, Grand Traverse County

GPS Coordinates: 44.63228 , -85.57407

T26N R10W Sec 19

Road Width at Culvert: 9 ft.

Road Surface: Sand

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

Comments: Beaver activity on both sides of crossing, stream dimensions impacted.

Length: 250 ft.

Slope: 1-5%

Vegetation: heavy

Length: 175 ft.

Slope: 6-10%

Vegetation: heavy

Shape: round

Length: 20 ft.

Diameter: 3 ft diameter ft.

Material: steel

Condition :poor

Fill Depth: 4 ft.

Embankment Slope: 1:1 slope

Fill Depth: 4 ft.

Embankment Slope: 1:1 slope

Stream Current: none

Stream Substrate: muck

Stream Current: none

Stream Substrate: muck

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? no

Is there sand over the crossing? no

 

Extent of Erosion: moderate

Action Recommended? yes

Add pavement? no

Add paved raised edge? no

Increase fill? no

Replace culvert(s)? no

Dimensions of replacement: round, galvanized, 4 ft diameter, 40 feet long

Extend culvert(s)? no

Other Treatments: rock riprap, revegetation

Comments: Recommend an installation of a beaver guard on upstream end of new culvert. Keep upstream beaver dams intact and remove downstream dams to better drain the job site prior to construction.