Fish Passage Improvement site 50101576

Fish Passage Site 50101576

Coordinates (dec. deg.): 64.63888°, -164.36660°
Legal Description: K010S029W12
Region: Arctic
Road Name: Council Road

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

Elevation:

Site Comments: Mile 40.2. On curve. Pull out to NE of crossing.

Survey Date: Jul 06, 2006

Survey SEW05-COR21

site photos

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

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: Unknown

Step Pools: No
Construction Year:

Site Observations:

Constriction ratio gray
Culvert gradient gray

Comments: 2 fish observed in outlet pool, likely dolly varden. Island splits channel u/s of inlet.

Culvert Measurements

ID: 1

Structure Type: Removed structure (Structural steel plate)

Fish Passage Rating: Gray

Length(ft): 110.3

Inlet Type: Flush

Outlet Type: Flush

Corrugation Depth(in.): 2.0

Corrugation Width(in.): 6.0

Condition Rating(1-5): 3

Approach Angle: 0.0

Sedimentation At Inlet:

Inlet Substrate:

Outlet Substrate:

	Inlet	Outlet
Width(ft):	10.2	10.5
Height(ft):	11.2	10.8
Apron Length(ft):
Water Depth(ft):		0.35
Rustline Height(ft):	1.25
Substrate Depth(ft):	0.0	0.3

Backwatered?:

Baffles Present: No

Embedded?: No

Embedded Depth(ft): 0.0

Outfall Height: 0.1

Outfall Type:

Constriction Ratio: 0.52

Culvert Gradient: 1.60%

Max Slope:

Max Slope Length:

Comments: culvert bottom showed abrasion and developing rust;

Culvert Observations:

Culvert gradient gray
Constriction ratio gray

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	120.0	8.60
Upstream bank full	75.0	17.90
Upstream bank full	100.0	23.40
Upstream bank full	125.0	26.60
Upstream bank full	150.0	20.10
Upstream bed width
Upstream ordinary high water	75.0	14.80
Upstream ordinary high water	100.0	22.00
Upstream ordinary high water	125.0	25.10
Upstream ordinary high water	150.0	16.20

Elevations

Locator ID	Culvert Number	River Distance (ft)¹	Distance From Crossing (ft)²	Relative Elevation (ft)
Max Pool Depth				2.30
Outlet Pool Water Elev				88.01
D/S Grade Ctrl (Thalweg)		0.00	290.0	86.35
D/S Grade Ctrl (Thalweg)		102.00	188.0	87.21
D/S Grade Ctrl (Thalweg)		170.00	120.0	87.38
D/S Tailcrest or 1st Thalweg		270.00	20.0	89.20
D/S Thalweg		285.00	5.0	0.80
Outlet Invert	1	290.00	0.0	87.76
Road Elev		345.00		105.95
Inlet Culvert Invert	1	400.00	0.0	89.52
U/S Grade Ctrl (Thalweg)		404.00	4.0	90.11
U/S Grade Ctrl (Thalweg)		412.00	12.0	90.30
U/S Grade Ctrl (Thalweg)		447.00	47.0	90.54
U/S Grade Ctrl (Thalweg)		511.00	111.0	92.01

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.