Road Stream Crossing Site LTB-101

Little Traverse Bay Watershed, Unknown tributary of Bear River
Greenwood Rd
Bear Creek Twp, Emmet County
Information collected by:
Tip of the Mitt Watershed Council
Site Location
GPS Coordinates: 45.3557276 , -84.92874862
Owned by Private
Fish Passability 0.5
Total Erosion: 0.5444 tons/year
Severity: Moderate
Year Inventoried: 2014
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
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: Sand
General Conditions: Poor
Structure Interior: corrugated
Structure is Rusted through
Dimensions of Structure: Length 55 ft. , Width 2.5 ft. , Height 2.92 ft.
Percentage Plugged: Inlet: 1% to 25% In Pipe: 1% to 25%
Percentage Crushed: In Pipe: 1% to 25%
Structure Inlet
Water Depth: 0.33 ft.
Embedded Depth of Structure: 0.083 ft.
Water Velocity*: 0.4 ft./sec.
Structure Outlet
Water Depth: 0.13 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1.4 ft./sec.
*Water Velocities were measured 0.16 ft. below Surface (with Meter)
Additional Comments
1955 Greenwood. Old site ID: UT-7.
Stream Information
Stream Flow: Less than 1/2 Bankfull
Scour Pool: Length 7 ft. , Width 8 ft. , Depth 0.6 ft.
Riffle Information
Water Depth: 0.5 ft.
Bankfull Width: 10.83 ft.
Wetted Width: 7.67 ft.
Water Velocity: 0.05 ft./sec. (Measured with Meter)
Dominant Substrate: Gravel
Road Information
Paved County Road
Road Condition: Good
Road Width at Culvert: 26 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 15 ft.
Slope: Vertical
Downstream
Fill Depth: 35 ft.
Slope: Vertical
Approaches
Left Approach
Length: 150 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 1.12
Erosion: 0.1444 tons/year
Right Approach
Length: 0 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0 tons/year
Erosion Information
Total Erosion at Crossing: 0.5444 tons/year
Extent of Erosion: Severe
Notes: Trees were stabilizing one point, trees dying and roots uplifting PICS 32,33,34,35
Location of Erosion
Erosion Dimensions
Eroded Material
Material Eroded
Total Erosion
facing downstream
Length
Width
Depth
Reaching Stream?
(tons/year)
Right Downstream Embankment
10 ft.
30 ft.
1 ft.
yes
Gravelly Loam
0.2
Left Downstream Embankment
10 ft.
30 ft.
1 ft.
yes
Gravelly Loam
0.2
Summary Information
Fish Passability 0.5
Erosion is an area of concern for this site. YES. Fish passage AND erosion a big issue. Water depth changes a lot sometimes barely a trickle into a full stream. See above for erosion
A future visit to this site is recommended. erosion. LOTS of trash.
These non-native species were observerd at this site: Reed Canary Grass

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