Road Stream Crossing Site UBR_LR00.75

Upper Black River Watershed, Little Rainy River
Northeastern State Trail
Allis Twp, Presque Isle County
Information collected by:
Huron Pines
Site Location
GPS Coordinates: 45.33368 , -84.1609
T34N R2E Sec 14
Owned by Private
Structure is NOT Perched
Total Erosion: 1.0422 tons/year
Severity: Minor
Year Inventoried: 2014
Site ID
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Right
Road Approach - Left
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 1
Structure Shape: Open Bottom Square/Rectangle
Inlet Type: Wingwall 10-30 Degree
Outlet Type: At Stream Grade
Structure Material: Concrete
Structure Substrate: Gravel
General Conditions: Fair
Structure Interior: smooth
Dimensions of Structure: Length 70 ft. , Width 9.8 ft. , Height 11.2 ft.
Percentage Plugged: Inlet: 26% to 50% Outlet: 0% In Pipe: 0%
Structure is NOT Perched
Structure Inlet
Water Depth: 2.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.1 ft./sec.
Structure Outlet
Water Depth: 0.8 ft.
Embedded Depth of Structure: 0.2 ft.
Water Velocity*: 0.1 ft./sec.
*Water Velocities were measured 0.5 ft. below Surface (with Meter)
Additional Comments
beavers have turned it into a dam; series of dams downstream from culvert as well; the downstream scour pool is more of a upstream pond from the beaver dam below; upstream pond size is estimated (too large to measure)
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 80 ft. , Width 50 ft. , Depth 3 ft.
Upstream Pond: Length 150 ft. , Width 50 ft. , Depth 5 ft.
Road Information
Gravel State Road
Road Condition: Good
Road Width at Culvert: 14.6 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 15 ft.
Slope: 1:1.5
Downstream
Fill Depth: 15 ft.
Slope: 1:1.5
Approaches
Left Approach
Length: 254 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.442
Erosion: 0.4511 tons/year
Right Approach
Length: 317.1 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.463
Erosion: 0.591 tons/year
Erosion Information
Total Erosion at Crossing: 1.0422 tons/year
Summary Information
Fish Passage is an area of concern for this site. Large beaver dam is blocking the culvert
A future visit to this site is recommended. Beaver dam blocking culvert
These non-native species were observerd at this site: Leafy Spurge