Road Stream Crossing Site BEAR_BC058
Bear Creek Watershed, Big Bear Creek
Milks Rd
Maple Grove Twp,
Manistee County
Information collected by:
Site Location
GPS Coordinates: 44.35617
, -86.04949
T23N
R14W
Sec 30
Owned by Private
Structure is NOT Perched
Total Erosion: 0.3355 tons/year
Severity: Restored
Year Inventoried: 2011
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: Mixture
General Conditions: Good
Structure Interior: smooth
Dimensions of Structure: Length 30 ft.
, Width 30 ft.
, Height 10 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 2.7 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 3 ft./sec.
Structure Outlet
Water Depth: 3.3 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 3 ft./sec.
*Water Velocities were measured 1.62 ft. below Surface
(with Meter)
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 30 ft.
, Width 42 ft.
, Depth 4.5 ft.
Riffle Information
Water Depth: 1.7 ft.
Bankfull Width: 40 ft.
Wetted Width: 37 ft.
Water Velocity: 2.7 ft./sec.
(Measured with Meter)
Dominant Substrate: Gravel
Road Information
Paved
County Road
Road Condition: Good
Road Width at Culvert: 28 ft.
Location of Low Point: Other
Runoff Path: Roadway
Fill Depth: 0 ft.
Slope: Vertical
Fill Depth: 0 ft.
Slope: Vertical
Approaches
Left Approach
Length: 0 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.06
Erosion: 0.0555 tons/year
Right Approach
Length: 520 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.517
Erosion: 0.2799 tons/year
Erosion Information
Total Erosion at Crossing: 0.3355 tons/year
Extent of Erosion: Minor
Summary Information
Erosion is an area of concern for this site.