Fish Passage Improvement site 50101560

Fish Passage Site 50101560

Coordinates (dec. deg.): 64.78804°, -163.78298°
Legal Description: K008S025W17
Region: Arctic
Road Name: Council Road

Datum: NAD83
Quad Name / ITM: Solomon D-4
AWC Stream #:
Stream Name: Unnamed

Elevation:

Site Comments: Mile 65.3

Survey Date: Jul 01, 2006

Survey SEW05-COR05

site photos

Project Supervisor: Dave Ryland,
Observers: Dave Ryland, Kyle Negri

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:

Site Observations:

Culvert is poorly aligned
Road bank erosion
Culvert gradient red
Outfall height red

Comments: Road bed collapsing at inlet and outlet. Pull out to SW of X-ing.

Culvert Measurements

ID: 1

Structure Type: Circular pipe (Corrugated steel)

Fish Passage Rating: Red

Length(ft): 32.1

Inlet Type: Mitered

Outlet Type: Mitered

Corrugation Depth(in.): 0.5

Corrugation Width(in.): 2.75

Condition Rating(1-5): 3

Approach Angle: 47.0

Sedimentation At Inlet:

Inlet Substrate: None

Outlet Substrate: None

	Inlet	Outlet
Width(ft):	2.9	3.0
Height(ft):	3.0	2.9
Apron Length(ft):
Water Depth(ft):		0.3
Rustline Height(ft):	0.6
Substrate Depth(ft):	0.0	0.0

Backwatered?: No

Baffles Present: No

Embedded?: No

Embedded Depth(ft): 0.0

Outfall Height: 1.22

Outfall Type: Free Fall In To Pool

Constriction Ratio: 0.61

Culvert Gradient: 6.32%

Max Slope:

Max Slope Length:

Comments: road fill collapsing at inlet and outlet;

Culvert Observations:

Culvert is poorly aligned
Road bank erosion
Culvert gradient gray
Outfall height red

Stream Measurements

Stream Substrates	Upstream	Downstream
Dominant:	Gravel	Gravel
Subdominant:	Silt/Clay	Gravel

Stream Slope(deg.):
Stream Flow Stage:

Stream Width Type	Distance From Crossing (ft)	Stream Width (ft)
Downstream ordinary high water
Downstream ordinary high water	39.0	4.50
Upstream bank full	75.0	8.20
Upstream bank full	101.0	5.80
Upstream bank full	125.0	5.60
Upstream bank full	150.0	7.10
Upstream bed width
Upstream ordinary high water	75.0	4.90
Upstream ordinary high water	101.0	5.00
Upstream ordinary high water	125.0	4.50
Upstream ordinary high water	150.0	4.70

Elevations

Locator ID	Culvert Number	River Distance (ft)¹	Distance From Crossing (ft)²	Relative Elevation (ft)
Max Pool Depth				2.50
Outlet Pool Water Elev				92.90
U/S Thalweg				96.11
D/S Grade Ctrl (Thalweg)		0.00	111.0	89.47
D/S Grade Ctrl (Thalweg)		29.00	82.0	91.10
D/S Grade Ctrl (Thalweg)		72.00	39.0	91.78
D/S Tailcrest or 1st Thalweg		97.00	14.0	92.75
OHW (Outlet Tailcrest)		97.00	14.0	93.07
D/S Thalweg		106.00	5.0	2.20
Outlet Invert	1	111.00	0.0	93.82
Road Elev		127.00		99.71
Inlet Culvert Invert	1	143.00	0.0	95.85
U/S Grade Ctrl (Thalweg)		149.00	6.0	95.16
U/S Grade Ctrl (Thalweg)		169.00	26.0	95.43
U/S Grade Ctrl (Thalweg)		186.00	43.0	95.93
U/S Grade Ctrl (Thalweg)		194.00	51.0	96.25
U/S Grade Ctrl (Thalweg)		204.00	61.0	96.70
U/S Grade Ctrl (Thalweg)		218.00	75.0	97.48
U/S Grade Ctrl (Thalweg)		244.00	101.0	97.87

Notes:

River distance is measured continuously throughout the survey reach along the thalweg of the stream.
Measured from each end of the crossing along the thalweg of the stream.