Road Stream Crossing Site PIGN_PR23
Pigeon River Watershed, Wilkes Creek
Montgomery Rd
Cheboygan County
Information collected by:
Site Location
GPS Coordinates: 45.3446595,-84.4709238
T 034N R 001 Sec 07
Fish Passability: Barrier at High Flows
Structure is NOT Perched
Total Erosion: 0.17 tons/year
Overall Score: 28
Severity: Moderate
Date Inventoried: 9/8/2021
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: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: None
General Conditions: Light superficial corrosion or abrasion or chipping or spalling or cracking. No shape changes (described above).
Structure Interior: Corrugated
Is Structure Rusted through? No
Dimensions of Structure: Length 43 ft. Width 3 ft. Height 3 ft.
Percentage Plugged: None or 0%
Percentage Crushed: None or 0%
Structure is NOT Perched
Structure Inlet
Water Depth: 2.9 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.3 ft./sec.
Structure Outlet
Water Depth: 2.9 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.2 ft./sec.
*Water Velocities were measured 2.7 ft. below 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? Yes
Scour Pool: Length 24 ft., Width 12 ft., Depth 3 ft.
Is Upstream Ponding Present? Yes
Pond: Length 10 ft., Width 5 ft.
Riffle Information
Water Depth: 1 ft.
Bankfull Width: 10 ft.
Wetted Width: 10 ft.
Dominant Substrate: Organics – decomposing plant material
Road Information
Road Surface: Paved
Owner: County
Road Condition: New Pavement or Well Graded, Same condition as initial placement.
Road Core Integrity: Good (no symptoms of lack of integrity)
Road Width at Culvert: 24 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 4.5 ft.
Slope: Steep, 1:1, 45°, or 100%
Downstream
Fill Depth: 4.5 ft.
Slope: Steep, 1:1, 45°, or 100%
Approaches
Left Approach
Length: 200 ft.
Slope: 1-5%
Vegetation: Partial, Ditch has some vegetation and some bare, eroding places.
Erosion Estimate: 0.08 tons/year
Right Approach
Length: 200 ft.
Slope: 1-5%
Vegetation: Partial, Ditch has some vegetation and some bare, eroding places.
Erosion Estimate: 0.08 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 0.17 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 Downstream Embankment | 9 ft. | 1 ft. | 0.5 ft. | Yes | Sand | Moderate (corrective actions recommended) | 0.01 |
Summary Information
Fish Passability: Barrier at High Flows
Is a future visit to this site recommended? No
Were any non-native species observerd at this site? Yes, Burdock.
Site Comments: Rep reach not taken. Private land on both sides.
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.