Fish Passage Improvement site 50101575

Fish Passage Site 50101575

Coordinates (dec. deg.): 64.69397°, -164.27645°
Legal Description: K009S028W21
Region: Arctic
Road Name: Council Road

Datum: NAD83
Quad Name / ITM: Solomon C-5
AWC Stream #:
Stream Name: Unnamed

Elevation:

Site Comments: Mile 45.1, on curve.

Survey Date: Jul 05, 2006

Survey SEW05-COR20

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
Mechanical damage or joints parting
Culvert gradient red
Inlet perch

Comments: None

Culvert Measurements

ID: 1

Structure Type: Circular pipe (Corrugated steel)

Fish Passage Rating: Red

Length(ft): 65.25

Inlet Type: Mitered

Outlet Type: Mitered

Corrugation Depth(in.): 0.5

Corrugation Width(in.): 2.75

Condition Rating(1-5): 2

Approach Angle: 53.0

Sedimentation At Inlet: Yes

Inlet Substrate:

Outlet Substrate:

	Inlet	Outlet
Width(ft):	3.9
Height(ft):	3.9
Apron Length(ft):
Water Depth(ft):		0.3
Rustline Height(ft):	1.0
Substrate Depth(ft):	0.0	0.0

Backwatered?: No

Baffles Present: No

Embedded?: No

Embedded Depth(ft): 0.0

Outfall Height: 0.1

Outfall Type:

Constriction Ratio: 1.08

Culvert Gradient: 2.84%

Max Slope:

Max Slope Length:

Comments: outlet too damaged to measure; heavy rust inside pipe

Culvert Observations:

Culvert is poorly aligned
Mechanical damage or joints parting
Culvert gradient red
Inlet perch

Stream Measurements

Stream Substrates	Upstream	Downstream
Dominant:	Gravel	Gravel
Subdominant:	Cobble	Cobble

Stream Slope(deg.):
Stream Flow Stage:

Stream Width Type	Distance From Crossing (ft)	Stream Width (ft)
Downstream ordinary high water
Downstream ordinary high water	100.0	4.50
Upstream bank full
Upstream bank full	75.0	11.10
Upstream bank full	125.0	4.00
Upstream bank full	150.0	2.70
Upstream bed width
Upstream ordinary high water
Upstream ordinary high water	75.0	6.70
Upstream ordinary high water	125.0	2.30
Upstream ordinary high water	150.0	1.80

Elevations

Locator ID	Culvert Number	River Distance (ft)¹	Distance From Crossing (ft)²	Relative Elevation (ft)
Outlet Pool Water Elev				94.10
D/S Grade Ctrl (Thalweg)		0.00	131.0	86.79
D/S Grade Ctrl (Thalweg)		19.00	112.0	87.35
D/S Grade Ctrl (Thalweg)		31.00	100.0	89.07
D/S Grade Ctrl (Thalweg)		54.00	77.0	89.94
D/S Grade Ctrl (Thalweg)		101.00	30.0	92.83
D/S Tailcrest or 1st Thalweg		124.00	7.0	93.51
OHW (Outlet Tailcrest)		124.00	7.0	94.17
Bankfull		124.00	7.0	94.42
Outlet Invert	1	131.00	0.0	93.90
Road Elev		163.50		101.85
Inlet Culvert Invert	1	196.00	0.0	95.75
U/S Thalweg		198.60	2.6	95.69
U/S Grade Ctrl (Thalweg)		199.00	3.0	96.56
U/S Thalweg		203.50	7.5	96.51
U/S Grade Ctrl (Thalweg)		205.00	9.0	96.95
U/S Grade Ctrl (Thalweg)		234.00	38.0	98.68
U/S Grade Ctrl (Thalweg)		245.00	49.0	99.38
U/S Grade Ctrl (Thalweg)		267.00	71.0	99.61
U/S Grade Ctrl (Thalweg)		279.00	83.0	99.59
U/S Grade Ctrl (Thalweg)		301.00	105.0	100.99
U/S Grade Ctrl (Thalweg)		313.00	117.0	101.83

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.