Road Stream Crossing Site PM_L020

Pere Marquette River Watershed, Middle Branch
Foreman Rd
Pleasant Plains Twp, Lake County
Information collected by:
Site Location
GPS Coordinates: 43.8615497152293 , -85.8014168590307
T17N R13W Sec 13
Owned by Private
Total Erosion: 0.4627 tons/year
Severity: Minor
Year Inventoried: 2014
Inlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 2
Structure Shape: Pipe Arch
Inlet Type: Mitered
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Sand
General Conditions: Fair
Multiple Culverts/Spans
Culvert/Span
Width
Length
Height
Material
1
10 ft.
65 ft.
7 ft.
Metal
2
10 ft.
65 ft.
7 ft.
Metal
Structure Interior: smooth
Dimensions of Structure: Length 65 ft. , Width 10 ft. , Height 7 ft.
Percentage Plugged: Inlet: 0% Outlet: 0% In Pipe: 1% to 25%
Percentage Crushed: Inlet: 0% Outlet: 0% In Pipe: 1% to 25%
Structure Inlet
Water Depth: 2.5 ft.
Embedded Depth of Structure: 0.75 ft.
Water Velocity*: 2 ft./sec.
Structure Outlet
Water Depth: 2.2 ft.
Embedded Depth of Structure: 0.75 ft.
Water Velocity*: 2 ft./sec.
*Water Velocities were measured 1 ft. below Surface (with Meter)
Stream Information
Stream Flow: Less than 1/2 Bankfull
(Measured with Meter)
Dominant Substrate: Organics
Road Information
Paved County Road
Road Condition: Fair
Road Width at Culvert: 30 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 3.5 ft.
Slope: 1:2
Downstream
Fill Depth: 5 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 120 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.388
Erosion: 0.0462 tons/year
Right Approach
Length: 300 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 1.4
Erosion: 0.4165 tons/year
Erosion Information
Total Erosion at Crossing: 0.4627 tons/year
Extent of Erosion: Minor
Summary Information
Erosion is an area of concern for this site.