Fish Passage Improvement site 50101567

Fish Passage Site 50101567

Coordinates (dec. deg.): 64.69613°, -164.10050°
Legal Description: K009S027W21
Region: Arctic
Road Name: Council Road

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

Elevation:

Site Comments: Mile 50.6. 3 pipes, only one surveyed, one is overflow and one goes to springs just u/s of xing.

Survey Date: Jul 03, 2006

Survey SEW05-COR12

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 gradient red
Outfall height gray
Constriction ratio gray

Comments: 3 pipes, only one surveyed, one is overflow and one goes to springs 150' u/s of xing. Fish observed d/s of main pipe. Lots of snow.

Culvert Measurements

ID: 1

Structure Type: Circular pipe (Corrugated steel)

Fish Passage Rating: Red

Length(ft): 142.9

Inlet Type: Flush

Outlet Type: Flush

Corrugation Depth(in.): 0.5

Corrugation Width(in.): 2.75

Condition Rating(1-5): 3

Approach Angle: 9.0

Sedimentation At Inlet:

Inlet Substrate: None

Outlet Substrate: None

	Inlet	Outlet
Width(ft):	3.3	3.7
Height(ft):	4.0	4.1
Apron Length(ft):
Water Depth(ft):		0.25
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: 0.13

Outfall Type:

Constriction Ratio: 0.52

Culvert Gradient: 3.83%

Max Slope:

Max Slope Length:

Comments: 2 pipes at site, only one surveyed (pipe 1) because the other branch of the stream ends at a spring shortly above pipe 2. Photos of both pipes available.

Culvert Observations:

Culvert gradient red
Outfall height 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	101.0	7.70
Upstream bank full	75.0	6.60
Upstream bank full	100.0	7.60
Upstream bank full	125.0	8.00
Upstream bank full	150.0	6.40
Upstream bed width
Upstream ordinary high water	75.0	5.80
Upstream ordinary high water	100.0	6.90
Upstream ordinary high water	125.0	7.00
Upstream ordinary high water	150.0	5.80

Elevations

Locator ID	Culvert Number	River Distance (ft)¹	Distance From Crossing (ft)²	Relative Elevation (ft)
Outlet Pool Water Elev				83.31
D/S Thalweg		0.00	115.0	80.34
D/S Grade Ctrl (Thalweg)		14.00	101.0	81.04
D/S Grade Ctrl (Thalweg)		37.00	78.0	81.72
D/S Tailcrest or 1st Thalweg		95.00	20.0	82.97
D/S Grade Ctrl (Thalweg)		95.00	20.0	83.02
OHW (Outlet Tailcrest)		95.00	20.0	83.46
Bankfull		95.00	20.0	83.92
Outlet Invert	1	115.00	0.0	83.19
Road Elev		186.00		112.73
Inlet Culvert Invert	1	257.00	0.0	88.66
U/S Grade Ctrl (Thalweg)		267.00	10.0	89.03
U/S Grade Ctrl (Thalweg)		292.00	35.0	89.36
U/S Grade Ctrl (Thalweg)		316.00	59.0	90.00
U/S Grade Ctrl (Thalweg)		359.00	102.0	91.93
U/S Grade Ctrl (Thalweg)		399.00	142.0	93.26
U/S Grade Ctrl (Thalweg)		417.00	160.0	94.31

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.