Road Stream Crossing Site MAN_WE_123
Big Manistee River Watershed, Unknown (tributary to Manistee River)
E 2 3/4 Rd
Greenwood Twp,
Wexford County
Information collected by:
Site Location
GPS Coordinates: 44.49914
, -85.51504
T24N
R10W
Sec 3
Owned by Private
Structure is NOT Perched
Total Erosion: 2.1654 tons/year
Severity: Severe
Year Inventoried: 2014
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Erosion
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 1
Structure Shape: Pipe Arch
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Concrete
Structure Substrate: None
General Conditions: Poor
Structure Interior: smooth
Dimensions of Structure: Length 140 ft.
, Width 4 ft.
, Height 3.3 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 0.5 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2.1 ft./sec.
Structure Outlet
Water Depth: 0.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2.5 ft./sec.
*Water Velocities were measured 0.2 ft. below Surface
(with Meter)
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Upstream Pond: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Riffle Information
Water Depth: 0.6 ft.
Bankfull Width: 11 ft.
Wetted Width: 9 ft.
Water Velocity: 1.7 ft./sec.
(Measured with Meter)
Dominant Substrate: Gravel
Road Information
Gravel
County Road
Road Condition: Good
Road Width at Culvert: 16 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 40 ft.
Slope: 1:1
Downstream
Fill Depth: 40 ft.
Slope: 1:1
Approaches
Left Approach
Length: 240 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.512
Erosion: 0.5416 tons/year
Right Approach
Length: 450 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.62
Erosion: 1.2298 tons/year
Erosion Information
Total Erosion at Crossing: 2.1654 tons/year
Extent of Erosion: Severe
Notes:
Large severe erosion cutting away on end of culvert outlet.
Location of Erosion | Erosion Dimensions | Eroded Material | Material Eroded | Total Erosion | ||
facing downstream | Length | Width | Depth | Reaching Stream? | (tons/year) | |
Left Downstream Embankment |
3.6 ft. |
2 ft. |
5.7 ft. |
yes |
Sandy Loam |
0.394 |
Summary Information
Erosion is an area of concern for this site.
Yes, erosion in numerous places around culvert.
A future visit to this site is recommended.
Yes, to monitor erosion.