Road Stream Crossing Site AUS_CR011
Au Sable River Watershed, Tributary of Au Sable River
Old Dam Rd
Grayling Twp,
Crawford County
Information collected by:
Site Location
GPS Coordinates: 44.66272
, -84.74226
T26N
R04W
Sec 12
Owned by Private
Structure is NOT Perched
Total Erosion: 0.1396 tons/year
Severity: Severe
Year Inventoried: 2013
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: Mixture
General Conditions: Poor
Structure Interior: smooth
Dimensions of Structure: Length 28.5 ft.
, Width 2.5 ft.
, Height 0.7 ft.
Percentage Plugged:
Inlet: 76% to 100%
Outlet: 76% to 100%
In Pipe: 0%
Structure is NOT Perched
Water Depth: 0 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 ft./sec.
Water Depth: 0 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Scour Pool: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Upstream Pond: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Riffle Information
Water Depth: 0.4 ft.
Bankfull Width: 13.6 ft.
Wetted Width: 6 ft.
Water Velocity: 0 ft./sec.
(Measured with Float Test)
Dominant Substrate: Organics
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 23.5 ft.
Location of Low Point: Other
Runoff Path: Ditch
Fill Depth: 0 ft.
Slope: Vertical
Fill Depth: 0 ft.
Slope: Vertical
Approaches
Left Approach
Length: 158 ft.
Slope: 6% to 10%
Vegetation: Heavy
LS Factor: 1.138
Erosion: 0.1396 tons/year
Right Approach
Length: 0 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0 tons/year
Erosion Information
Total Erosion at Crossing: 0.1396 tons/year
Extent of Erosion: Minor
Notes:
From people walking on it
Summary Information
Fish Passage is an area of concern for this site.
Yes, this site has SWD and LWD blocking passage way completely.
A future visit to this site is recommended.
To assess the plugged culvert/fish passage, and remove debris