Road Stream Crossing Site AGIO059

Au Gres River Watershed, Johnson Creek
Towerline Rd
Burleigh Twp, Iosco County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 44.19879 , -83.78337
T21N R5E Sec 23 & 24
Owned by Private
Fish Passability 1
Structure is NOT Perched
Total Erosion: 7.2847 tons/year
Severity: Severe
Year Inventoried: 2014
Site ID
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: Bridge
Structure Shape: Open Bottom Square/Rectangle
Inlet Type: Other
Outlet Type: At Stream Grade
Structure Material: Wood
Structure Substrate: Mixture
General Conditions: Fair
Structure Interior: smooth
Dimensions of Structure: Length 32 ft. , Width 51 ft. , Height 12 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.1 ft./sec.
Structure Outlet
Water Depth: 1.9 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.3 ft./sec.
*Water Velocities were measured 0.5 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: 0.7 ft.
Bankfull Width: 33 ft.
Wetted Width: 26 ft.
Water Velocity: 1.1 ft./sec. (Measured with Meter)
Dominant Substrate: Gravel
Road Information
Gravel County Road
Road Condition: Good
Road Width at Culvert: 30 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: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 4.7107 tons/year
Right Approach
Length: 340 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.468
Erosion: 1.315 tons/year
Erosion Information
Total Erosion at Crossing: 7.2847 tons/year
Extent of Erosion: Moderate
Notes: Upstream streambank is undercut. Bank slope eroding on downstream left side.
Location of Erosion
Erosion Dimensions
Eroded Material
Material Eroded
Total Erosion
facing downstream
Length
Width
Depth
Reaching Stream?
(tons/year)
Right Upstream Streambank
44 ft.
5 ft.
4 ft.
yes
Loam
1.0842
Left Downstream Streambank
26 ft.
9 ft.
1 ft.
yes
Sandy Loam
0.1747
Summary Information
Fish Passability 1