Road Stream Crossing Site LTB-148
Little Traverse Bay Watershed, Unknown tributary
Lake Grove
Resort Twp,
Emmet County
Information collected by:
Site Location
GPS Coordinates: 45.35839008
, -85.02709791
Fish Passability 0.5
Total Erosion: 0.9268 tons/year
Severity: Moderate
Year Inventoried: 2014
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: Poor
Structure Interior: corrugated
Structure is Rusted through
Dimensions of Structure: Length 45 ft.
, Width 2.5 ft.
, Height 2.5 ft.
Percentage Plugged:
Inlet: 26% to 50%
Outlet: 1% to 25%
Percentage Crushed:
Inlet: 1% to 25%
Outlet: 1% to 25%
In Pipe: 1% to 25%
Structure Inlet
Water Depth: 0.04 ft.
Embedded Depth of Structure: 0.167 ft.
Water Velocity*: 0.01 ft./sec.
Structure Outlet
Water Depth: 0.12 ft.
Embedded Depth of Structure: 0.083 ft.
Water Velocity*: 0 ft./sec.
*Water Velocities were measured 0.024 ft. below Surface
(with Meter)
Additional Comments
Old site ID: LTB-15.
Stream Information
Stream Flow: Less than 1/2 Bankfull
Riffle Information
Water Depth: 0.01 ft.
Dominant Substrate: Gravel
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 33 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 3 ft.
Slope: 1:2
Downstream
Fill Depth: 3 ft.
Slope: 1:2
Approaches
Left Approach
Length: 500 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 1.635
Erosion: 0.8918 tons/year
Right Approach
Length: 0 ft.
Slope: Less Than 1%
Vegetation: Partial
LS Factor: 0.05
Erosion: 0 tons/year
Erosion Information
Total Erosion at Crossing: 0.9268 tons/year
Extent of Erosion: Moderate
Notes: some netting in place but removed to side concrete in bed of erosion (pic 152)
Location of Erosion | Erosion Dimensions | Eroded Material | Material Eroded | Total Erosion | ||
facing downstream | Length | Width | Depth | Reaching Stream? | (tons/year) | |
Right Downstream Streambank |
5 ft. |
3 ft. |
1 ft. |
yes |
Gravelly Loam |
0.035 |
Summary Information
Fish Passability 0.5
A future visit to this site is recommended. culvert in poor condition, is plugged by surrounding debris water only flows to creek if high enough velocity