Fish Passage Improvement site 50101622

Fish Passage Site 50101622

Coordinates (dec. deg.): 64.73127°, -165.26258°
Legal Description: K009S033W03
Region: Arctic
Road Name: Kougarok Road

Datum: NAD83
Quad Name / ITM: Nome C-1
AWC Stream #:
Stream Name: Unnamed

Elevation:

Site Comments: Mile 19.0

Survey Date: Sep 26, 2005

Survey SEW05-KR34

site photos

Project Supervisor: Dave Ryland,
Observers: Dave Ryland, Jason Cheney, Paul Thompson

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:

Site Observations:

Culvert is poorly aligned
Outfall height red
Culvert gradient red

Comments: None

Culvert Measurements

ID: 1

Structure Type: Circular pipe (Corrugated steel)

Fish Passage Rating: Red

Length(ft): 75.2

Inlet Type: Flush

Outlet Type: Flush

Corrugation Depth(in.): 1.0

Corrugation Width(in.): 3.0

Condition Rating(1-5): 3

Approach Angle: 46.0

Sedimentation At Inlet: Yes

Inlet Substrate: Cobble

Outlet Substrate: None

	Inlet	Outlet
Width(ft):	4.8	5.0
Height(ft):	5.0	5.0
Apron Length(ft):
Water Depth(ft):		0.6
Rustline Height(ft):	1.1
Substrate Depth(ft):	0.2	0.0

Backwatered?: No

Baffles Present: No

Embedded?: No

Embedded Depth(ft): 0.0

Outfall Height: 1.03

Outfall Type: Free Fall In To Pool

Constriction Ratio: 0.94

Culvert Gradient: 2.17%

Max Slope:

Max Slope Length:

Culvert Observations:

Culvert is poorly aligned
Outfall height red
Culvert gradient red

Stream Measurements

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

Stream Slope(deg.):
Stream Flow Stage:	High

Stream Width Type	Distance From Crossing (ft)	Stream Width (ft)
Downstream ordinary high water
Downstream ordinary high water	115.0	7.60
Upstream bank full	75.0	9.40
Upstream bank full	100.0	20.60
Upstream bank full	125.0	13.40
Upstream bank full	150.0	14.20
Upstream bed width	75.0	1.90
Upstream bed width	100.0	2.70
Upstream bed width	125.0	3.30
Upstream bed width	150.0	2.20
Upstream ordinary high water	75.0	3.60
Upstream ordinary high water	100.0	5.40
Upstream ordinary high water	125.0	5.90
Upstream ordinary high water	150.0	5.50

Elevations

Locator ID	Culvert Number	River Distance (ft)¹	Distance From Crossing (ft)²	Relative Elevation (ft)
Outlet Pool Water Elev				83.27
Max Pool Depth				3.10
U/S Thalweg				86.76
D/S Grade Ctrl (Thalweg)		0.00	115.0	80.39
D/S Tailcrest or 1st Thalweg		98.00	17.0	82.40
OHW (Outlet Tailcrest)		98.00	17.0	83.31
D/S Thalweg		110.00	5.0	2.70
Outlet Invert	1	115.00	0.0	83.70
Road Elev		152.50		130.53
Inlet Culvert Invert	1	190.00	0.0	85.33
U/S Thalweg		200.00	10.0	86.70
U/S Grade Ctrl (Thalweg)		220.00	30.0	87.29

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.