Road Stream Crossing Site GTBAY_MCT025
Mitchell Creek Watershed, Unnamed Tributary to Mitchell Creek
3 Mile Rd
East Bay Twp,
Grand Traverse County
Information collected by:
Site Location
GPS Coordinates: 44.71984008
, -85.556619
T27N
R10W
Sec 20
Owned by Private
Fish Passability 0
Perch Height: 0.8 ft.
Total Erosion: 0.4516 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: Poor
Structure Interior: corrugated
Dimensions of Structure: Length 60 ft.
, Width 1.5 ft.
, Height 1.5 ft.
Perch Height: 0.8 ft.
Structure Inlet
Water Depth: 0.2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.9 ft./sec.
Structure Outlet
Water Depth: 0.1 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 1.9 ft./sec.
*Water Velocities were measured at the Surface
(with Meter)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Scour Pool: Length 7.8 ft.
, Width 6.3 ft.
, Depth 0.9 ft.
Riffle Information
Water Depth: 0.1 ft.
Bankfull Width: 15 ft.
Wetted Width: 1.9 ft.
Water Velocity: 2 ft./sec.
(Measured with Meter)
Dominant Substrate: Gravel
Road Information
Paved
County Road
Road Condition: Fair
Road Width at Culvert: 23 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 4.7 ft.
Slope: Less than 1:2
Downstream
Fill Depth: 5 ft.
Slope: Less than 1:2
Approaches
Left Approach
Length: 999 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.4329 tons/year
Right Approach
Length: 50 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.0019 tons/year
Erosion Information
Total Erosion at Crossing: 0.4516 tons/year
Extent of Erosion: Moderate
Notes: Eroding around inlet and working into bank. Erosion around outlet undercutting pipe
Location of Erosion | Erosion Dimensions | Eroded Material | Material Eroded | Total Erosion | ||
facing downstream | Length | Width | Depth | Reaching Stream? | (tons/year) | |
Left Upstream Embankment |
1 ft. |
2 ft. |
1 ft. |
yes |
Sandy Loam |
0.0067 |
Right Downstream Embankment |
1 ft. |
4 ft. |
1.5 ft. |
yes |
Sandy Loam |
0.0101 |
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