Road Stream Crossing Site AGAR012
Au Gres River Watershed, Cedar Creek drain
Lehman Rd
Mason Twp,
Arenac County
Information collected by:
Site Location
GPS Coordinates: 44.14475
, -83.82817
T20N
R5E
Sec 11 & 12
Owned by Private
Fish Passability 0.9
Structure is NOT Perched
Total Erosion: 4.3376 tons/year
Severity: Severe
Year Inventoried: 2014
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: Headwall
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Mixture
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 23 ft.
, Width 5 ft.
, Height 5 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 0.8 ft.
Embedded Depth of Structure: 0.3 ft.
Water Velocity*: 1 ft./sec.
Structure Outlet
Water Depth: 1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.7 ft./sec.
*Water Velocities were measured 0.5 ft. below Surface
(with Meter)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Scour Pool: Length 22.5 ft.
, Width 16.7 ft.
, Depth 2.1 ft.
Upstream Pond: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Riffle Information
Water Depth: 0.4 ft.
Bankfull Width: 25 ft.
Wetted Width: 8 ft.
Water Velocity: 1.3 ft./sec.
(Measured with Meter)
Dominant Substrate: Gravel
Road Information
Gravel
County Road
Road Condition: Good
Road Width at Culvert: 19 ft.
Location of Low Point: At Stream
Embankments
Upstream
Fill Depth: 2.9 ft.
Slope: Vertical
Downstream
Fill Depth: 3 ft.
Slope: Vertical
Approaches
Left Approach
Length: 870 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.557
Erosion: 2.5364 tons/year
Right Approach
Length: 652 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.528
Erosion: 1.8012 tons/year
Erosion Information
Total Erosion at Crossing: 4.3376 tons/year
Notes: None.
Summary Information
Fish Passability 0.9