Road Stream Crossing Site BEAR_BC055
Bear Creek Watershed, Halls Creek
Lahti Rd
Maple Grove Twp,
Manistee County
Information collected by:
Site Location
GPS Coordinates: 44.39199
, -86.04312
T23N
R14W
Sec 18
Owned by Private
Perch Height: 2.5 ft.
Total Erosion: 0.6141 tons/year
Severity: Severe
Year Inventoried: 2011
Inlet
Outlet
Upstream Conditions
Downstream 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: Freefall into Pool
Structure Material: Metal
Structure Substrate: None
General Conditions: Fair
Structure Interior: corrugated
Dimensions of Structure: Length 50 ft.
, Width 1.5 ft.
, Height 1.5 ft.
Perch Height: 2.5 ft.
Structure Inlet
Water Depth: 0.6 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2 ft./sec.
Structure Outlet
Water Depth: 0.2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 7.5 ft./sec.
*Water Velocities were measured at the Surface
(with Meter)
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 10 ft.
, Width 10 ft.
, Depth 2.2 ft.
Upstream Pond: Length 3 ft.
, Width 3 ft.
, Depth 0.9 ft.
Riffle Information
Water Depth: 0.34 ft.
Bankfull Width: 6.5 ft.
Wetted Width: 6.2 ft.
Water Velocity: 1 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Gravel
County Road
Road Condition: Good
Road Width at Culvert: 19 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 5 ft.
Slope: Vertical
Downstream
Fill Depth: 4.5 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 250 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.2617 tons/year
Right Approach
Length: 250 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.2617 tons/year
Erosion Information
Total Erosion at Crossing: 0.6141 tons/year
Extent of Erosion: Moderate
Erosion is occurring and corrective actions can be installed to address the problem.
Notes:
The vertical embankments lack vegetation which contributes to erosion.
Location of Erosion | Erosion Dimensions | Eroded Material | Material Eroded | Total Erosion | ||
facing downstream | Length | Width | Depth | Reaching Stream? | (tons/year) | |
Right Upstream Streambank |
7 ft. |
1 ft. |
0.5 ft. |
yes |
Sandy Loam |
0.0235 |
Left Downstream Embankment |
5 ft. |
6 ft. |
1 ft. |
yes |
Sandy Loam |
0.0336 |
Right Downstream Embankment |
5 ft. |
6 ft. |
1 ft. |
yes |
Sandy Loam |
0.0336 |
Summary Information
Fish Passage is an area of concern for this site.
Perched outlet prevents aquatic passage and erosion is also a concern.