Road Stream Crossing Site GTBAY_BRD007
Boardman River Watershed, N Branch Boardman River Tributary/Crofton Creek
Boardman River Rd
Kalkaska Twp,
Kalkaska County
Information collected by:
Site Location
GPS Coordinates: 44.699038
, -85.305562
T27N
R8W
Sec 32
Owned by Private
Fish Passability 1
Total Erosion: 0.236 tons/year
Severity: Minor
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: Pipe Arch
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Gravel
General Conditions: Good
Multiple Culverts/Spans | ||||
Culvert/Span | Width | Length | Height | Material |
2 |
16.5 ft. |
69 ft. |
10 ft. |
Metal |
Structure Interior: corrugated
Dimensions of Structure: Length 69 ft.
, Width 16.5 ft.
, Height 10 ft.
Structure Inlet
Water Depth: 2 ft.
Embedded Depth of Structure: 0.2 ft.
Water Velocity*: 3.3 ft./sec.
Structure Outlet
Water Depth: 1.3 ft.
Embedded Depth of Structure: 0.3 ft.
Water Velocity*: 2.9 ft./sec.
*Water Velocities were measured 0.5 ft. below Surface
(with Meter)
Additional Comments
Structure width greater than bank full and structure water velocity in line with riffle water velocity. Severity score equals 13.5 so considered minor.
Stream Information
Stream Flow: Less than Bankfull
Riffle Information
Water Depth: 1.2 ft.
Bankfull Width: 30 ft.
Wetted Width: 28 ft.
Water Velocity: 3.3 ft./sec.
(Measured with Meter)
Dominant Substrate: Sand
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 28 ft.
Location of Low Point: Other
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 4 ft.
Slope: More than 1:2
Downstream
Fill Depth: 4 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 500 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.5
Erosion: 0.2314 tons/year
Right Approach
Length: 100 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.0046 tons/year
Erosion Information
Total Erosion at Crossing: 0.236 tons/year
Summary Information
Fish Passability 1
These non-native species were observerd at this site: Spotted Knappweed