Road Stream Crossing Site TBW_TBMO213
Thunder Bay River Watershed, Anchor Creek
Lake Avalon
Hillman Twp,
Montmorency County
Information collected by:
Site Location
GPS Coordinates: 45.10229
, -83.91283
T31N
R4E
Sec 02
Owned by Private
Structure is NOT Perched
Total Erosion: 0.9588 tons/year
Severity: Moderate
Year Inventoried: 2017
Site ID
Inlet
Upstream Conditions
Downstream Conditions
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 1
Structure Shape: Round
Inlet Type: Wingwall 10-30 Degree
Outlet Type: At Stream Grade
Structure Material: Concrete
Structure Substrate: Sand
General Conditions: Poor
Structure Interior: smooth
Dimensions of Structure: Length 46 ft.
, Width 5 ft.
, Height 5 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 2.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.6 ft./sec.
Structure Outlet
Water Depth: 2.2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.7 ft./sec.
*Water Velocities were measured 0.3 ft. below Surface
(with Meter)
Additional Comments
RIFFLE UNSAFE TO ACCESS
Stream Information
Stream Flow: Less than Bankfull
Road Information
Paved
County Road
Road Condition: Fair
Road Width at Culvert: 28 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 1.6 ft.
Slope: More than 1:2
Downstream
Fill Depth: 1.8 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.5276 tons/year
Right Approach
Length: 0 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.26
Erosion: 0 tons/year
Erosion Information
Total Erosion at Crossing: 0.9588 tons/year
Extent of Erosion: Moderate
Erosion is occurring and corrective actions can be installed to address the problem.
Notes: WINGWALL STRUCTURES AND SECTION OF PIPE HAVE AREAS OF EROSION
Location of Erosion | Erosion Dimensions | Eroded Material | Material Eroded | Total Erosion | ||
facing downstream | Length | Width | Depth | Reaching Stream? | (tons/year) | |
Left Downstream Embankment |
8 ft. |
3 ft. |
2 ft. |
yes |
Loam |
0.0986 |
Right Downstream Embankment |
9 ft. |
2 ft. |
2 ft. |
yes |
Loam |
0.1109 |
Left Upstream Embankment |
12 ft. |
3 ft. |
2 ft. |
yes |
Loam |
0.1478 |
Right Upstream Embankment |
6 ft. |
3 ft. |
2 ft. |
yes |
Loam |
0.0739 |
Summary Information
A future visit to this site is recommended. EROSION OF STRUCTURES
These non-native species were observerd at this site: Reed Canary Grass