Road Stream Crossing Site MAN_KA_013
Big Manistee River Watershed, Portage Creek
Portage Creek Rd
Bear Lake Twp,
Kalkaska County
Information collected by:
Site Location
GPS Coordinates: 44.6329
, -84.90861
T26N
R5W
Sec 22
Owned by State
Structure is NOT Perched
Total Erosion: 1.9983 tons/year
Severity: Moderate
Year Inventoried: 2014
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: Pipe Arch
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Sand
General Conditions: Good
Multiple Culverts/Spans | ||||
Culvert/Span | Width | Length | Height | Material |
2 |
10 ft. |
53 ft. |
7 ft. |
Metal |
Structure Interior: corrugated
Dimensions of Structure: Length 53 ft.
, Width 10 ft.
, Height 7 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 2.2 ft.
Embedded Depth of Structure: 0.1 ft.
Water Velocity*: 1.7 ft./sec.
Structure Outlet
Water Depth: 2 ft.
Embedded Depth of Structure: 0.1 ft.
Water Velocity*: 1.9 ft./sec.
*Water Velocities were measured 0.9 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: 2.3 ft.
Bankfull Width: 20 ft.
Wetted Width: 16 ft.
Water Velocity: 2.2 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Gravel
County Road
Road Condition: Good
Road Width at Culvert: 26 ft.
Location of Low Point: Other
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 2.3 ft.
Slope: More than 1:2
Downstream
Fill Depth: 2.5 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 450 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.62
Erosion: 1.9983 tons/year
Right Approach
Length: 0 ft.
Slope: Less Than 1%
Vegetation: Partial
LS Factor: 0.05
Erosion: 0 tons/year
Erosion Information
Total Erosion at Crossing: 1.9983 tons/year
Extent of Erosion: Moderate
Summary Information
Erosion is an area of concern for this site.