Road Stream Crossing Site GTBAY_MC020
Mitchell Creek Watershed, Mitchell Creek
Birmley Rd
Garfield Twp,
Grand Traverse County
Information collected by:
Site Location
GPS Coordinates: 44.70802889
, -85.59867899
T27N
R11W
Sec 26
Owned by Private
Total Erosion: 0.5455 tons/year
Severity: Minor
Year Inventoried: 2020
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 1
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Mixture
General Conditions: Fair
Structure Interior: corrugated
Dimensions of Structure: Length 64.5 ft.
, Width 1.5 ft.
, Height 1.5 ft.
Percentage Plugged:
In Pipe: 26% to 50%
Structure Inlet
Water Depth: 0.4 ft.
Embedded Depth of Structure: 0.7 ft.
Water Velocity*: 0.1 ft./sec.
Structure Outlet
Water Depth: 0.2 ft.
Embedded Depth of Structure: 0.2 ft.
Water Velocity*: 0.1 ft./sec.
*Water Velocities were measured at the Surface
(with Float Test)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Upstream Pond: Length 80 ft.
, Width 60 ft.
Water Velocity: 0.1 ft./sec.
(Measured with Float Test)
Dominant Substrate: Organics
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 33 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 4.5 ft.
Slope: Less than 1:2
Downstream
Fill Depth: 4 ft.
Slope: 1:2
Approaches
Left Approach
Length: 500 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.5
Erosion: 0.2727 tons/year
Right Approach
Length: 500 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.5
Erosion: 0.2727 tons/year
Erosion Information
Total Erosion at Crossing: 0.5455 tons/year
Summary Information
These non-native species were observerd at this site: Burdock, Spotted Knapweed, Bull Thistle