Road Stream Crossing Site BT_G021
Betsie River Watershed, Unknown (Near Ellis Lake)
US-31
Green Lake Twp,
Grand Traverse County
Information collected by:
Site Location
GPS Coordinates: 44.65854
, -85.75012
T26N
R12W
Sec 10
Owned by Private
Fish Passability 1
Structure is NOT Perched
Total Erosion: 1.6687 tons/year
Severity: Moderate
Year Inventoried: 2014
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: Headwall
Outlet Type: At Stream Grade
Structure Material: Concrete
Structure Substrate: Mixture
General Conditions: Good
Structure Interior: smooth
Dimensions of Structure: Length 50 ft.
, Width 30 ft.
, Height 5 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 2.2 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.4 ft./sec.
Structure Outlet
Water Depth: 3.3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.5 ft./sec.
*Water Velocities were measured 1.4 ft. below Surface
(with Meter)
Stream Information
Stream Flow: 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 ft.
Bankfull Width: 40 ft.
Wetted Width: 30 ft.
Water Velocity: 0.3 ft./sec.
(Measured with Meter)
Dominant Substrate: Organics
Road Information
Paved
Federal Road
Road Condition: Good
Road Width at Culvert: 47 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Fill Depth: 0 ft.
Slope: Vertical
Fill Depth: 0 ft.
Slope: Vertical
Approaches
Left Approach
Length: 1000 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.57
Erosion: 0.8856 tons/year
Right Approach
Length: 900 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.56
Erosion: 0.7831 tons/year
Erosion Information
Total Erosion at Crossing: 1.6687 tons/year
Summary Information
Fish Passability 1