Road Stream Crossing Site BT_G012

Betsie River Watershed, Brigham Creek
E Duck Lake Rd
Green Lake Twp, Grand Traverse County
Information collected by:
GPS Coordinates: 44.62019 , -85.72618
T26N R12W Sec 26
Owned by Private
Fish Passability 0.5
Structure is NOT Perched
Total Erosion: 0.3603 tons/year
Severity: Moderate
Year Inventoried: 2014
Site Location
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: culvert(s)
Number of Culverts: 1
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Sand
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 35 ft. , Width 3.4 ft. , Height 3.4 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 1.1 ft.
Embedded Depth of Structure: 0.2 ft.
Water Velocity*: 2.1 ft./sec.
Structure Outlet
Water Depth: 1.2 ft.
Embedded Depth of Structure: 0.3 ft.
Water Velocity*: 1.5 ft./sec.
*Water Velocities were measured 0.7 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: 0.3 ft.
Bankfull Width: 13.5 ft.
Wetted Width: 9.7 ft.
Water Velocity: 1.7 ft./sec. (Measured with Meter)
Dominant Substrate: Gravel
Road Information
Paved County Road
Road Condition: Good
Road Width at Culvert: 31 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 8.5 ft.
Slope: 1:1
Downstream
Fill Depth: 9 ft.
Slope: 1:2
Approaches
Left Approach
Length: 150 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.44
Erosion: 0.0676 tons/year
Right Approach
Length: 350 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.575
Erosion: 0.2062 tons/year
Erosion Information
Total Erosion at Crossing: 0.3603 tons/year
Extent of Erosion: Minor
Notes: Undercut bank.
Location of Erosion
Erosion Dimensions
Eroded Material
Material Eroded
Total Erosion
facing downstream
Length
Width
Depth
Reaching Stream?
(tons/year)
Right Downstream Streambank
30 ft.
2 ft.
3 ft.
yes
Sandy Loam
0.0864
Summary Information
Fish Passability 0.5