Road Stream Crossing Site AUS_PR142

Au Sable River Watershed, Tributary of Gimlet Creek
Procunier Rd
Millen Twp, Alcona County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 44.61201 , -83.5284
T26N R07E Sec 25,36
Owned by Private
Fish Passability 0.9
Structure is NOT Perched
Total Erosion: 8.9222 tons/year
Severity: Severe
Year Inventoried: 2013
Site ID
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 2
Structure Shape: Round
Inlet Type: Headwall
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Sand
General Conditions: Fair
Multiple Culverts/Spans
Culvert/Span
Width
Length
Height
Material
1
2.5 ft.
21 ft.
2.5 ft.
Metal
2
2.5 ft.
21 ft.
2.5 ft.
Metal
Structure Interior: corrugated
Dimensions of Structure: Length 20 ft. , Width 2.5 ft. , Height 2.5 ft.
Percentage Plugged: Inlet: 26% to 50%
Structure is NOT Perched
Structure Inlet
Water Depth: 1.7 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 ft./sec.
Structure Outlet
Water Depth: 2.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.1 ft./sec.
*Water Velocities were measured at the Surface (with Float Test)
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: 0.2 ft.
Bankfull Width: 7 ft.
Wetted Width: 3 ft.
Water Velocity: 0.6 ft./sec. (Measured with Float Test)
Dominant Substrate: Cobble
Road Information
Gravel County Road
Road Condition: Good
Road Width at Culvert: 20 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Fill Depth: 0 ft.
Slope: Vertical
Fill Depth: 0 ft.
Slope: Vertical
Approaches
Left Approach
Length: 796 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 1.907
Erosion: 8.3617 tons/year
Right Approach
Length: 233 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.437
Erosion: 0.5605 tons/year
Erosion Information
Total Erosion at Crossing: 8.9222 tons/year
Summary Information
Fish Passability 0.9