Road Stream Crossing Site EUP_CHRW35
Charlotte River Watershed, Unnamed
M 129
Chippewa County
Information collected by:
Site Location
GPS Coordinates: 46.2539115,-84.3635402
T 045N R 001 Sec 31
Fish Passability: Barrier
Perch Height: 0.4 ft.
Total Erosion: 11.78 tons/year
Overall Score: 36
Severity: Severe
Date Inventoried: 6/24/2021
Road Approach - Left
Road Approach - Right
Inlet
Upstream Conditions
Outlet
Downstream Conditions
Representative Reach
Site Sketch
Crossing Information*
Type of Crossing: Culvert(s)
Number of Structures: 1
Structure Shape: Round
Inlet Type: Wingwall 30 to 70 degrees
Outlet Type: At Stream Grade
Structure Material: Concrete
Structure Substrate: Gravel
General Conditions: Moderate to major deterioration from corrosion or abrasion (less than 5% of the structure has small holes or is nearly rusted through) or cracking or spalling or chipping (several small cracks or moderate chipping in the concrete). OR Moderate shape changes (described above).
Structure Interior: Smooth
Is Structure Rusted through? No
Dimensions of Structure: Length 112 ft. Width 3.5 ft. Height 3.5 ft.
Percentage Plugged: None or 0%
Percentage Crushed: None or 0%
Perch Height: 0.4 ft.
Structure Inlet
Water Depth: 0.1 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*: 1 ft./sec.
*Water Velocities were measured 0.1 ft. below the surface (via Flow Meter).
Stream Information
Stream Flow: < 1/2 Bankfull – The stream channel is less than half filled with water.
Stream Flow Type: Perennial (if flowing during the time of assessment.)
Is Scour Pool Present? No
Is Upstream Ponding Present? Yes
Pond: Length 15 ft., Width 5 ft.
Riffle Information
Water Depth: 0.8 ft.
Bankfull Width: 5 ft.
Wetted Width: 4.2 ft.
Water Velocity: 0.4 ft./sec. (measured via Flow Meter)
Dominant Substrate: Gravel – rocks between the size of a pinhead and a baseball
Road Information
Road Surface: Paved
Owner: State
Road Condition: New Pavement or Well Graded, Same condition as initial placement.
Road Core Integrity: Fair (some of the symptoms may be present, but not to an extent posing high risk to the crossing)
Road Width at Culvert: 42 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 13 ft.
Slope: Steep, 1:1, 45°, or 100%
Downstream
Fill Depth: 12.8 ft.
Slope: Steep, 1:1, 45°, or 100%
Approaches
Left Approach
Length: 1000 ft.
Slope: 1-5%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 0.79 tons/year
Right Approach
Length: 700 ft.
Slope: 1-5%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 0.52 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 11.78 tons/year
Location of Erosion | Erosion Dimensions | Eroded Material | Material Eroded | Extent of Erosion | Estimated Erosion | ||
facing downstream | Length | Width | Depth | Reaching Stream? | (tons/year) | ||
Left Upstreram Streambank1 | 33 ft. | 7 ft. | 11.8 ft. | Yes | Sandy Loam | Severe (corrective actions recommended) | 10.47 |
Left Downstream Embankment2 | 3 ft. | 1 ft. | 2 ft. | No | Gravelly Loam | Minor (corrective actions recommended) | 0 |
1Reaches from the edge of the road to the culvert.
2Above the culvert, forming a hole
2Above the culvert, forming a hole
Summary Information
Fish Passability: Barrier
Is a future visit to this site recommended? Yes, Addressing severe erosion on the upstream embankment slope.
Were any non-native species observerd at this site? Yes, Thistle, leafy spurge.
Site Comments: Debris
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.