Road Stream Crossing Site EBIO066
Au Gres River Watershed, Guiley Creek
Old State Rd
Grant Twp,
Iosco County
Information collected by:
Site Location
GPS Coordinates: 44.31355
, -83.7144
T22N
R6E
Sec 9
Owned by Private
Fish Passability 0
Structure is NOT Perched
Total Erosion: 1.2214 tons/year
Severity: Severe
Year Inventoried: 2014
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: Rock
General Conditions: Fair
Structure Interior: corrugated
Dimensions of Structure: Length 80 ft.
, Width 12.8 ft.
, Height 7.9 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 1.2 ft.
Embedded Depth of Structure: 1.3 ft.
Water Velocity*: 1.6 ft./sec.
Structure Outlet
Water Depth: 0.8 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 4.5 ft./sec.
*Water Velocities were measured 0.5 ft. below Surface
(with Meter)
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Upstream Pond: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Riffle Information
Water Depth: 1.2 ft.
Bankfull Width: 32 ft.
Wetted Width: 14.3 ft.
Water Velocity: 1.8 ft./sec.
(Measured with Meter)
Dominant Substrate: Cobble
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 32 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 6.9 ft.
Slope: More than 1:2
Downstream
Fill Depth: 7.5 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.603 tons/year
Right Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.603 tons/year
Erosion Information
Total Erosion at Crossing: 1.2214 tons/year
Extent of Erosion: Minor
Notes: Some erosion above culvert inlet.
Location of Erosion | Erosion Dimensions | Eroded Material | Material Eroded | Total Erosion | ||
facing downstream | Length | Width | Depth | Reaching Stream? | (tons/year) | |
Left Upstream Embankment |
5 ft. |
2 ft. |
3.5 ft. |
yes |
Loam |
0.0154 |
Summary Information
Fish Passability 0
Fish Passage is an area of concern for this site.
Culvert is large, but still undersized and likely a velocity barrier in most flows. Also, there is a ruined small dam a few hundred yards upstream that creates an additional fish passage issue.
A future visit to this site is recommended. A bridge would be more appropriate at this site. Also, small dam just above culvert is in poor condition.