Road Stream Crossing Site AUS_CR007
Au Sable River Watershed, Au Sable River
May Lake Rd
Frederic Twp,
Crawford County
Information collected by:
Site Location
GPS Coordinates: 44.77255
, -84.7639
T27N
R04W
Sec 2
Owned by Private
State
State
Fish Passability 0.5
Structure is NOT Perched
Total Erosion: 0.5258 tons/year
Severity: Moderate
Year Inventoried: 2013
Crossing Information
Type of Crossing: Bridge
Structure Shape: Open Bottom Square/Rectangle
Inlet Type: Other
Outlet Type: At Stream Grade
Structure Material: Wood
Structure Substrate: Sand
General Conditions: Fair
Structure Interior: smooth
Dimensions of Structure: Length 34.5 ft.
, Width 25 ft.
, Height 6.8 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2.03 ft./sec.
Structure Outlet
Water Depth: 2.4 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2.4 ft./sec.
*Water Velocities were measured 0.4 ft. below Surface
(with Meter)
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 30 ft.
, Width 47 ft.
, Depth 2.7 ft.
Upstream Pond: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Riffle Information
Water Depth: 2.5 ft.
Bankfull Width: 61 ft.
Wetted Width: 57 ft.
Water Velocity: 1.11 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Paved
County Road
Road Condition: Fair
Road Width at Culvert: 30 ft.
Location of Low Point: Other
Runoff Path: Roadway
Fill Depth: 0 ft.
Slope: Vertical
Fill Depth: 0 ft.
Slope: Vertical
Approaches
Left Approach
Length: 940 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.564
Erosion: 0.5258 tons/year
Length: 0 ft.
Slope: 0%
Vegetation: Heavy
LS Factor: 0
Erosion: 0 tons/year
Erosion Information
Total Erosion at Crossing: 0.5258 tons/year
Extent of Erosion: Minor
Notes: Road Commishion diversion leading to stream
Summary Information
Fish Passability 0.5
These non-native species were observerd at this site: Spotted Knapweed