Road Stream Crossing Site EUP_Trout lake 9
Carp River Watershed
Schoolhouse Rd
Mackinac County
Information collected by:
MiDNR
Site Location
GPS Coordinates: 46.147818,-85.0138147
T 043N R 006 Sec 02
Fish Passability: Not Assessed
Perch Height: 0.5 ft.
Total Erosion: 0.01 tons/year
Overall Score: 11
Severity: Severe
Date Inventoried: 10/14/2021
Road Approach - Left
Road Approach - Right
Inlet
Upstream Conditions
Outlet
Downstream Conditions
Crossing Information*
Type of Crossing: Culvert(s)
Number of Structures: 1
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: Freefall into Pool
Structure Material: Metal
Structure Substrate: None
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: Corrugated
Is Structure Rusted through? No
Dimensions of Structure: Length 24 ft. Width 1.5 ft. Height 1.5 ft.
Percentage Plugged: None or 0%
Percentage Crushed: None or 0%
Perch Height: 0.5 ft.
Structure Inlet
Water Depth: 0 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 ft./sec.
Structure Outlet
Water Depth: 0 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 ft./sec.
*Water Velocities were measured at the surface (via Float Test).
Stream Information
Stream Flow: None – The streambed is dry and there is no water flow.
Stream Flow Type: Concentrated Wetland Flow.
Is Scour Pool Present? Yes
Scour Pool: Length 7 ft., Width 5 ft., Depth 2.5 ft.
Is Upstream Ponding Present? No
Riffle Information
Road Information
Road Surface: Gravel
Owner: State
Manager: DNR Forest Resources Division
Road Condition: Old Pavement or Rutted, Minor cracking or rutting/ponding at crossing all or part of crossing length.
Road Core Integrity: Good (no symptoms of lack of integrity)
Road Width at Culvert: 12 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 2 ft.
Slope: Vertical, 0:1, or 90°
Downstream
Fill Depth: 2 ft.
Slope: Vertical, 0:1, or 90°
Approaches
Left Approach
Length: 20 ft.
Slope: < 1%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 0 tons/year
Right Approach
Length: 60 ft.
Slope: < 1%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 0.01 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 0.01 tons/year
Summary Information
Fish Passability: Not Assessed
Is a future visit to this site recommended? No
Were any non-native species observerd at this site? No
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.