Road Stream Crossing Site PIGN_PR07
Pigeon River Watershed, Pigeon River
Old Vanderbilt Rd
Otsego County
Information collected by:
Site Location
GPS Coordinates: 45.1281586,-84.5068663
T 032N R 002 Sec 25
Fish Passability: Barrier at Most Flows
Structure is NOT Perched
Total Erosion: 2.57 tons/year
Overall Score: 14
Severity: Minor
Date Inventoried: 9/9/2021
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: 2
Structure Shape: Round
Inlet Type: Headwall
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Gravel
General Conditions: Light superficial corrosion or abrasion or chipping or spalling or cracking. No shape changes (described above).
Additional (Multiple) Structures | ||||
Structure | Width | Length | Height | Material |
1 | 11 ft. | 26 ft. | 7.7 ft. | Metal |
2 | 11 ft. | 26 ft. | 7.7 ft. | Metal |
Structure Interior: Corrugated
Is Structure Rusted through? No
Dimensions of Structure: Length 26 ft. Width 11 ft. Height 7.7 ft.
Percentage Plugged: None or 0%
Percentage Crushed: None or 0%
Structure is NOT Perched
Structure Inlet
Water Depth: 2.4 ft.
Embedded Depth of Structure: 0.1 ft.
Water Velocity*: 2.1 ft./sec.
Structure Outlet
Water Depth: 2.4 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2.1 ft./sec.
*Water Velocities were measured 2.2 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? No
Is Upstream Ponding Present? No
Riffle Information
Water Depth: 1.7 ft.
Bankfull Width: 33 ft.
Wetted Width: 27 ft.
Water Velocity: 1.9 ft./sec. (measured via Flow Meter)
Dominant Substrate: Gravel – rocks between the size of a pinhead and a baseball
Road Information
Road Surface: Sand
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: 23 ft.
Location of Low Point: Other
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 4 ft.
Slope: Vertical, 0:1, or 90°
Downstream
Fill Depth: 4 ft.
Slope: Vertical, 0:1, or 90°
Approaches
Left Approach
Length: 250 ft.
Slope: 6-10%
Vegetation: Partial, Ditch has some vegetation and some bare, eroding places.
Erosion Estimate: 2.57 tons/year
Right Approach
Length: 0 ft.
Slope: 6-10%
Vegetation: Partial, Ditch has some vegetation and some bare, eroding places.
Erosion Estimate: 0 tons/year
Erosion Information
Estimate of Total Erosion at Crossing: 2.57 tons/year
Summary Information
Fish Passability: Barrier at Most Flows
Is a future visit to this site recommended? No
Were any non-native species observerd at this site? Yes, Leafy spurge, reed canary grass.
*These data are maintained in the Michigan DNR Road Stream Crossing Inventory.