Road Stream Crossing Site TBW_TBAC169

Thunder Bay River Watershed, Unnamed
Mount Maria Road
Caledonia Twp, Alcona County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 44.85036 , -83.60812
T28N R7E Sec 04
Owned by Private
Fish Passability 0
Perch Height: 1.3 ft.
Total Erosion: 0.1171 tons/year
Severity: Severe
Year Inventoried: 2017
Site ID
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 1
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: Freefall into Pool
Structure Material: Metal
Structure Substrate: None
General Conditions: Fair
Structure Interior: corrugated
Dimensions of Structure: Length 63 ft. , Width 3.2 ft. , Height 3.2 ft.
Percentage Plugged: Inlet: 1% to 25%
Perch Height: 1.3 ft.
Structure Inlet
Water Depth: 0.3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1.7 ft./sec.
Structure Outlet
Water Depth: 0.2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2.9 ft./sec.
*Water Velocities were measured 0.2 ft. below Surface (with Meter)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Scour Pool: Length 12 ft. , Width 8.8 ft. , Depth 1 ft.
Riffle Information
Water Depth: 0.4 ft.
Bankfull Width: 5 ft.
Wetted Width: 4 ft.
Water Velocity: 0.7 ft./sec. (Measured with Meter)
Dominant Substrate: Cobble
Road Information
Paved County Road
Road Condition: Fair
Road Width at Culvert: 28 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 5.8 ft.
Slope: More than 1:2
Downstream
Fill Depth: 6 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 0 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0 tons/year
Right Approach
Length: 275 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.45
Erosion: 0.1145 tons/year
Erosion Information
Total Erosion at Crossing: 0.1171 tons/year
Extent of Erosion: Minor
Location of Erosion
Erosion Dimensions
Eroded Material
Material Eroded
Total Erosion
facing downstream
Length
Width
Depth
Reaching Stream?
(tons/year)
Right Downstream Embankment
2.5 ft.
2 ft.
1.5 ft.
yes
Clay
0.0026
Summary Information
Fish Passability 0
Fish Passage is an area of concern for this site. PERCHED OUTLET
These non-native species were observerd at this site: Crown Vetch, and Queen Anne's Lace. Possible Moneywort Infestation (SHOULD CONTACT LANDOWNER TO SEE IF THEY WOULD BE INTERESTED IN TREATMENT)