Road Stream Crossing Site TW102
Tawas River Watershed, Fountain Creek
Wilber Rd
Wilber Twp,
Iosco County
Information collected by:
Site Location
GPS Coordinates: 44.3559655,-83.5235954
T 023N R 007 Sec 25
Fish Passability: Barrier
Perch Height: 0.9 ft.
Total Erosion: 2.53 tons/year
Overall Score: 14
Severity: Severe
Date Inventoried: 5/3/2022
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: Pipe Arch
Inlet Type: Headwall
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Sand
General Conditions: No deficiencies. New structure or nearly new condition.
Structure Interior: Corrugated
Is Structure Rusted through? No
Dimensions of Structure: Length 60 ft. Width 9.3 ft. Height 7 ft.
Percentage Plugged: None or 0%
Percentage Crushed: None or 0%
Perch Height: 0.9 ft.
Structure Inlet
Water Depth: 1.6 ft.
Embedded Depth of Structure: 1.1 ft.
Water Velocity*: 0.7 ft./sec.
Structure Outlet
Water Depth: 0.3 ft.
Embedded Depth of Structure: 3.3 ft.
Water Velocity*: 0.9 ft./sec.
*Water Velocities were measured at the surface (via Flow Meter).
Stream Information
Stream Flow: < Bankfull – The stream channel is more than half filled with water, but is not full.
Stream Flow Type: Perennial (if flowing during the time of assessment.)
Is Scour Pool Present? No
Is Upstream Ponding Present? Yes
Pond: Length 10 ft., Width 9 ft.
Riffle Information
Water Depth: 1 ft.
Bankfull Width: 8.5 ft.
Wetted Width: 8.5 ft.
Water Velocity: 1.2 ft./sec. (measured via Flow Meter)
Dominant Substrate: Sand – particles are smaller than a pinhead and feel gritty between fingers
Road Information
Road Surface: Gravel
Owner: County
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: 26 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 5.7 ft.
Slope: Steep, 1:1, 45°, or 100%
Downstream
Fill Depth: 6.5 ft.
Slope: Steep, 1:1, 45°, or 100%
Approaches
Left Approach
Length: 375 ft.
Slope: 6-10%
Vegetation: None, Ditch has been recently graded and is bare of vegetation.
Right Approach
Length: 200 ft.
Slope: 6-10%
Vegetation: Partial, Ditch has some vegetation and some bare, eroding places.
Erosion Estimate: 2.08 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 2.53 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) | ||
Right Downstream Embankment | 5.5 ft. | 3 ft. | 2.4 ft. | No | Sand | Moderate (corrective actions recommended) | 0.3 |
Left Upstream Embankment | 5 ft. | 2 ft. | 2 ft. | Yes | Sand | Moderate (corrective actions recommended) | 0.15 |
Summary Information
Fish Passability: Barrier
Is a future visit to this site recommended? No
Were any non-native species observerd at this site? Yes, Mullein.
Site Comments: Unkown ponding cause. Very shallow outlet due to sediment deposition and recovering scour pool.
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.