Road Stream Crossing Site MAN_WE_009
Big Manistee River Watershed, Seaton Creek
Seaton Creek Rd
Springville Twp,
Wexford County
Information collected by:
Site Location
GPS Coordinates: 44.35123
, -85.79922
T23N
R12W
Sec 32
Owned by Private
Fish Passability 0
Structure is NOT Perched
Total Erosion: 53.3554 tons/year
Severity: Severe
Year Inventoried: 2014
Site ID
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 1
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: None
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 45.5 ft.
, Width 6 ft.
, Height 6 ft.
Structure is NOT Perched
Structure Inlet
Water Depth: 0.7 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 5.6 ft./sec.
Structure Outlet
Water Depth: 1.6 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 4.6 ft./sec.
*Water Velocities were measured at the Surface
(with Meter)
Stream Information
Stream Flow: Less than Bankfull
Scour Pool: Length 28 ft.
, Width 26 ft.
, Depth 2.4 ft.
Upstream Pond: Length 0 ft.
, Width 0 ft.
, Depth 0 ft.
Riffle Information
Water Depth: 0.4 ft.
Bankfull Width: 11.3 ft.
Wetted Width: 10.8 ft.
Water Velocity: 2.6 ft./sec.
(Measured with Meter)
Dominant Substrate: Gravel
Road Information
Gravel
County Road
Road Condition: Good
Road Width at Culvert: 16 ft.
Location of Low Point: At Stream
Runoff Path: Roadway
Embankments
Upstream
Fill Depth: 2.1 ft.
Slope: More than 1:2
Downstream
Fill Depth: 5.4 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 150 ft.
Slope: 1% to 5%
Vegetation: Partial
LS Factor: 0.44
Erosion: 0.2909 tons/year
Right Approach
Length: 150 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.4
Erosion: 0.2645 tons/year
Erosion Information
Total Erosion at Crossing: 53.3554 tons/year
Extent of Erosion: Very Severe
Notes: Severe erosion occuring on all banks. Erosion on banks continued farther than we went downstream.
Location of Erosion | Erosion Dimensions | Eroded Material | Material Eroded | Total Erosion | ||
facing downstream | Length | Width | Depth | Reaching Stream? | (tons/year) | |
Right Downstream Streambank |
120 ft. |
8 ft. |
11 ft. |
yes |
Sand |
36.3 |
Left Downstream Streambank |
100 ft. |
3.5 ft. |
6 ft. |
yes |
Sand |
16.5 |
Summary Information
Fish Passability 0
Erosion is an area of concern for this site.
Yes, very severe erosion and poor fish passage.
A future visit to this site is recommended. Yes, severe bank erosion, high velocity, and culvert is placed on a slope downstream and causing back flow into the culvert.