Road Stream Crossing Site EUP_43N5W15_001
Carp River Watershed, Unnamed Tributary to Taylor Creek
FR 3330D
Mackinac County
Information collected by:
USFS
Site Location
GPS Coordinates: 46.1199700000001,-84.9154
T 043NN R 005W Sec 15
Owned by Federal
Fish Passability: Barrier
Perch Height: 0.1 ft.
Total Erosion: 0.2 tons/year
Overall Score: 36
Severity: Severe
Date Inventoried: 7/8/2016
Crossing Information*
Type of Crossing: Culvert(s)
Number of Structures: 1
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: Freefall onto Riprap
Structure Material: Metal
Structure Substrate: None
General Conditions: Major deterioration from corrosion or abrasion (10-50% of the length of structure is rusted through) or cracking or spalling or chipping (large chunks sloughing off, large cracks, exposed metal reinforcement). OR Major shape changes (described above) reducing the capacity of the structure by up to 50%. OR segment disconnection with evidence of water piping under or around the culvert.
Structure Interior: Corrugated
Is Structure Rusted through? No
Dimensions of Structure: Length 32 ft. Width 3 ft. Height 3 ft.
Percentage Plugged: 1% - 20% Inlet
Percentage Crushed: None or 0%
Perch Height: 0.1 ft.
Structure Inlet
Water Depth: 0.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.4 ft./sec.
Structure Outlet
Water Depth: 0.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.4 ft./sec.
*Water Velocities were measured at the surface (via Float Test).
Stream Information
Stream Flow: < 1/2 Bankfull – The stream channel is less than half filled with water.
Stream Flow Type: Intermittent (if channel is dry but has obviously flowed recently, appears to flow annually).
Is Scour Pool Present? No
Is Upstream Ponding Present? No
Riffle Information
Water Depth: 0.1 ft.
Bankfull Width: 7 ft.
Wetted Width: 2 ft.
Water Velocity: 0.4 ft./sec. (measured via Float Test)
Dominant Substrate: Cobble – baseball-sized or larger rocks (10in)
Road Information
Road Surface: Native Surface
Owner: Federal
Road Condition: Broken Pavement or Rilled/Gullied, Multiple patches, cracks, rilling, or gullies at crossing.
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: 10 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 4 ft.
Slope: Moderate, 2:1, 22.5°, or 41%
Downstream
Fill Depth: 4 ft.
Slope: Moderate, 2:1, 22.5°, or 41%
Approaches
Left Approach
Length: 100 ft.
Slope: 1-5%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 0.1 tons/year
Right Approach
Length: 100 ft.
Slope: 1-5%
Vegetation: Heavy, Ditch is fully vegetated or rip-rapped with no signs of erosion.
Erosion Estimate: 0.1 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 0.2 tons/year
Summary Information
Fish Passability: Barrier
Is a future visit to this site recommended? Yes, Crushed at inlet. Road is gated level one.
Were any non-native species observerd at this site? Yes, Spotted Knapweed, Oxe-eye Daisy.
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.