Road Stream Crossing Site GTBAY_AC003
Acme Creek Watershed, Acme Creek
US-31
Acme Twp,
Grand Traverse County
Information collected by:
Site Location
GPS Coordinates: 44.775417
, -85.498883
T28N
R10W
Sec 34
Owned by Private
Fish Passability 1
Total Erosion: 0.6077 tons/year
Severity: Minor
Year Inventoried: 2020
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: culvert(s)
Structure Shape: Open Bottom Square/Rectangle
Inlet Type: Wingwall 30-70 Degree
Outlet Type: At Stream Grade
Structure Material: Concrete
Structure Substrate: Sand
General Conditions: Good
Structure Interior: smooth
Dimensions of Structure: Length 125 ft.
, Width 13.5 ft.
, Height 8.5 ft.
Structure Inlet
Water Depth: 2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2 ft./sec.
Structure Outlet
Water Depth: 1.4 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 3.3 ft./sec.
*Water Velocities were measured 1.2 ft. below Surface
(with Meter)
Additional Comments
Structure width greater than bank full and structure water velocity in line with riffle water velocity and wood obstruction in outlet could account for higher outlet velocity. Severity score equals 14.5 so considered minor.
Stream Information
Stream Flow: Less than Bankfull
Riffle Information
Water Depth: 1.4 ft.
Bankfull Width: 12.5 ft.
Wetted Width: 12.5 ft.
Water Velocity: 2.1 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Paved
Federal Road
Road Condition: Good
Road Width at Culvert: 57 ft.
Location of Low Point: Other
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 1.5 ft.
Slope: More than 1:2
Downstream
Fill Depth: 1.5 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 50 ft.
Slope: Less Than 1%
Vegetation: Partial
LS Factor: 0.05
Erosion: 0.0047 tons/year
Right Approach
Length: 500 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.64
Erosion: 0.603 tons/year
Erosion Information
Total Erosion at Crossing: 0.6077 tons/year
Summary Information
Fish Passability 1
These non-native species were observerd at this site: Spotted Knapweed, Autumn Olive