Road Stream Crossing Site GTBAY_MC022
Mitchell Creek Watershed, Mitchell Creek
Hughes Dr
Garfield Twp,
Grand Traverse County
Information collected by:
Site Location
GPS Coordinates: 44.70890497
, -85.59120476
T27N
R11W
Sec 25
Owned by Local Government
Fish Passability 0.9
Total Erosion: 1.7696 tons/year
Severity: Moderate
Year Inventoried: 2020
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 2
Structure Shape: Round
Inlet Type: Apron
Outlet Type: Outlet Apron
Structure Material: Metal
Structure Substrate: Mixture
General Conditions: Good
Multiple Culverts/Spans | ||||
Culvert/Span | Width | Length | Height | Material |
1 |
4 ft. |
70 ft. |
4 ft. |
Metal |
2 |
4 ft. |
70 ft. |
4 ft. |
Metal |
Structure Interior: corrugated
Dimensions of Structure: Length 70 ft.
, Width 4 ft.
, Height 4 ft.
Structure Inlet
Water Depth: 0.4 ft.
Embedded Depth of Structure: 0.1 ft.
Water Velocity*: 0.8 ft./sec.
Structure Outlet
Water Depth: 0.5 ft.
Embedded Depth of Structure: 0.1 ft.
Water Velocity*: 0.2 ft./sec.
*Water Velocities were measured 0.1 ft. below Surface
(with Meter)
Additional Comments
Water depth and velocity measurements for culvert # 2. Culvert #1 inlet is above water level
Stream Information
Stream Flow: Less than 1/2 Bankfull
Riffle Information
Water Depth: 0.3 ft.
Bankfull Width: 10.8 ft.
Wetted Width: 3.8 ft.
Water Velocity: 1.2 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 33.5 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 1.5 ft.
Slope: Less than 1:2
Downstream
Fill Depth: 2.5 ft.
Slope: 1:2
Approaches
Left Approach
Length: 999 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.8
Erosion: 0.8848 tons/year
Right Approach
Length: 999 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.8
Erosion: 0.8848 tons/year
Erosion Information
Total Erosion at Crossing: 1.7696 tons/year
Summary Information
Fish Passability 0.9
These non-native species were observerd at this site: Queen Anne's Lace, Spotted Knapweed, Autumn Olive