Road Stream Crossing Site GTBAY_MC021
Mitchell Creek Watershed, Mitchell Creek
Emerson Rd
Garfield Twp,
Grand Traverse County
Information collected by:
Site Location
GPS Coordinates: 44.70794499
, -85.59122664
T27N
R11W
Sec 25
Owned by Local Government
Private
Private
Fish Passability 0
Perch Height: 0.1 ft.
Total Erosion: 0.9118 tons/year
Severity: Severe
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: 1
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: Freefall into Pool
Structure Material: Metal
Structure Substrate: None
General Conditions: Fair
Structure Interior: corrugated
Structure is Rusted through
Dimensions of Structure: Length 68.5 ft.
, Width 3 ft.
, Height 3 ft.
Perch Height: 0.1 ft.
Structure Inlet
Water Depth: 0.3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1.1 ft./sec.
Structure Outlet
Water Depth: 0.2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 2.2 ft./sec.
*Water Velocities were measured 0.1 ft. below Surface
(with Meter)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Scour Pool: Length 18.4 ft.
, Width 8 ft.
, Depth 1 ft.
Riffle Information
Water Depth: 0.2 ft.
Bankfull Width: 8.9 ft.
Wetted Width: 3.7 ft.
Water Velocity: 1 ft./sec.
(Measured with Meter)
Dominant Substrate: Gravel
Road Information
Paved
County Road
Road Condition: Fair
Road Width at Culvert: 22.8 ft.
Location of Low Point: Other
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 5.5 ft.
Slope: 1:2
Downstream
Fill Depth: 5.5 ft.
Slope: 1:1.5
Approaches
Left Approach
Length: 999 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.4291 tons/year
Right Approach
Length: 946 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.565
Erosion: 0.4026 tons/year
Erosion Information
Total Erosion at Crossing: 0.9118 tons/year
Extent of Erosion: Moderate
Erosion is occurring and corrective actions can be installed to address the problem.
Location of Erosion | Erosion Dimensions | Eroded Material | Material Eroded | Total Erosion | ||
facing downstream | Length | Width | Depth | Reaching Stream? | (tons/year) | |
Left Downstream Embankment |
2.5 ft. |
3.3 ft. |
2.5 ft. |
yes |
Sandy Loam |
0.042 |
Right Downstream Embankment |
2.7 ft. |
2.4 ft. |
2.1 ft. |
yes |
Sandy Loam |
0.0381 |
Summary Information
Fish Passability 0
Fish Passage is an area of concern for this site.
Perched culvert
These non-native species were observerd at this site: Queen Anne's Lace, Spotted Knapweed, Autumn Olive