Road Stream Crossing Site AGIO056
Au Gres River Watershed, Mongo Creek
Leggett Rd
Burleigh Twp,
Iosco County
Information collected by:
Site Location
GPS Coordinates: 44.21928
, -83.79613
T21N
R5E
Sec 11 & 14
Owned by Private
Fish Passability 0
Perch Height: 2.1 ft.
Total Erosion: 1.4391 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: culvert(s)
Number of Structures: 1
Structure Shape: Ellipse
Inlet Type: Projecting
Outlet Type: Freefall into Pool
Structure Material: Metal
Structure Substrate: None
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 50 ft.
, Width 3.3 ft.
, Height 2.6 ft.
Perch Height: 2.1 ft.
Structure Inlet
Water Depth: 0.5 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.1 ft./sec.
Structure Outlet
Water Depth: 0.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2.3 ft./sec.
*Water Velocities were measured 0.1 ft. below Surface
(with Meter)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Scour Pool: Length 7.5 ft.
, Width 4.4 ft.
, Depth 3 ft.
Upstream Pond: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Riffle Information
Water Depth: 0.4 ft.
Bankfull Width: 11 ft.
Wetted Width: 3 ft.
Water Velocity: 0.4 ft./sec.
(Measured with Meter)
Dominant Substrate: Gravel
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 20 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 2.9 ft.
Slope: More than 1:2
Downstream
Fill Depth: 3.6 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.3769 tons/year
Right Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.3769 tons/year
Erosion Information
Total Erosion at Crossing: 1.4391 tons/year
Extent of Erosion: Moderate
Notes: Significant streambank erosion.
Location of Erosion | Erosion Dimensions | Eroded Material | Material Eroded | Total Erosion | ||
facing downstream | Length | Width | Depth | Reaching Stream? | (tons/year) | |
Left Downstream Streambank |
17 ft. |
3 ft. |
3 ft. |
yes |
Sandy Loam |
0.3427 |
Right Downstream Streambank |
17 ft. |
2 ft. |
3 ft. |
yes |
Sandy Loam |
0.3427 |
Summary Information
Fish Passability 0
A future visit to this site is recommended. Culvert is severely perched and significant erosion is occuring. Install erosion control measures, or potentially replace culvert.