Road Stream Crossing Site BL-10

Maple River Watershed, Carp Creek
Hogsback
Burt Twp, Cheboygan County
Information collected by:
Tip of the Mitt Watershed Council
Site Location
GPS Coordinates: 45.548662 , -84.682527
T36N R03W Sec 4
Fish Passability 0.5
Total Erosion: 1.6941 tons/year
Severity: Severe
Year Inventoried: 2014
Inlet
Outlet
Downstream Conditions
Upstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 1
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Gravel
General Conditions: Good
Structure Interior: smooth
Dimensions of Structure: Length 33 ft. , Width 7 ft. , Height 6.75 ft.
Percentage Crushed: Inlet: 1% to 25%
Structure Inlet
Water Depth: 1.67 ft.
Embedded Depth of Structure: 0.08 ft.
Water Velocity*: 2.1 ft./sec.
Structure Outlet
Water Depth: 1.75 ft.
Embedded Depth of Structure: 0.08 ft.
Water Velocity*: 2 ft./sec.
(with Meter)
Stream Information
Stream Flow: Less than Bankfull
Riffle Information
Water Depth: 1.02 ft.
Bankfull Width: 30 ft.
Wetted Width: 25 ft.
Water Velocity: 1.2 ft./sec. (Measured with Meter)
Dominant Substrate: Sand
Road Information
Gravel County Road
Road Condition: Good
Road Width at Culvert: 16 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 2.5 ft.
Slope: 1:1.5
Downstream
Fill Depth: 3 ft.
Slope: 1:1.5
Approaches
Left Approach
Length: 150 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.4
Erosion: 0.2645 tons/year
Right Approach
Length: 100 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 0.99
Erosion: 0.4364 tons/year
Erosion Information
Total Erosion at Crossing: 1.6941 tons/year
Extent of Erosion: Moderate
Erosion is occurring and corrective actions can be installed to address the problem.
Location of Erosion
Erosion Dimensions
Eroded Material
Material Eroded
Total Erosion
facing downstream
Length
Width
Depth
Reaching Stream?
(tons/year)
Left Downstream Ditch
15 ft.
3 ft.
7 ft.
yes
Sand
0.8085
Left Upstream Ditch
3 ft.
10 ft.
5 ft.
yes
Sand
0.1155
Right Upstream Ditch
3 ft.
6 ft.
3 ft.
yes
Sand
0.0693
Summary Information
Fish Passability 0.5
Erosion is an area of concern for this site.
A future visit to this site is recommended. check on crushed culvert and erosion