Road Stream Crossing Site BT_G013
Betsie River Watershed, Mason Creek
E Duck Lake Rd
Green Lake Twp,
Grand Traverse County
Information collected by:
Site Location
GPS Coordinates: 44.63131
, -85.72129
T26N
R12W
Sec 23
Owned by Private
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: Bridge
Structure Shape: Open Bottom Square/Rectangle
Inlet Type: Wingwall 30-70 Degree
Outlet Type: At Stream Grade
Structure Material: Wood
Structure Substrate: Gravel
General Conditions: New
Structure Interior: smooth
Dimensions of Structure: Length 36 ft.
, Width 27 ft.
, Height 11 ft.
Structure Inlet
Water Depth: 0.5 ft.
Water Velocity*: 3.8 ft./sec.
Structure Outlet
Water Depth: 0.5 ft.
Water Velocity*: 3.2 ft./sec.
*Water Velocities were measured 0.3 ft. below Surface
(with Meter)
Stream Information
Stream Flow: Less than Bankfull
Riffle Information
Water Depth: 0.8 ft.
Bankfull Width: 16.2 ft.
Wetted Width: 13.2 ft.
Water Velocity: 1.9 ft./sec.
(Measured with Meter)
Dominant Substrate: Gravel
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 34 ft.
Location of Low Point: Other
Runoff Path: Ditch
Fill Depth: 0 ft.
Slope: Vertical
Fill Depth: 0 ft.
Slope: Vertical
Approaches
Left Approach
Length: 300 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.46
Erosion: 0.1369 tons/year
Right Approach
Length: 50 ft.
Slope: Less Than 1%
Vegetation: Partial
LS Factor: 0.458
Erosion: 0.1346 tons/year
Erosion Information
Total Erosion at Crossing: 40.2714 tons/year
Extent of Erosion: Stabilized
Summary Information
Erosion is an area of concern for this site.