Fish Passage Improvement site 50101615

Fish Passage Site 50101615

Coordinates (dec. deg.): 64.79546°, -165.21147°
Legal Description: K008S032W17
Region: Arctic
Road Name: Kougarok Road

Datum: NAD83
Quad Name / ITM: Nome D-1
AWC Stream #:
Stream Name: Nome River tributary

Elevation:

Site Comments: Mile 24.0. Confluence with Nome River ~ 75m d/s. Gravel pad along stream at site.

Survey Date: Sep 25, 2005

Survey SEW05-KR27

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:

Mechanical damage or joints parting
Inlet perch
Hydraulic flows exceeded capacity
Constriction ratio red
Culvert gradient red
Outfall height red

Comments: None

Culvert Measurements

ID: 1

Structure Type: Circular pipe (Corrugated steel)

Fish Passage Rating: Red

Length(ft): 38.5

Inlet Type: Mitered

Outlet Type: Mitered

Corrugation Depth(in.): 0.75

Corrugation Width(in.): 2.75

Condition Rating(1-5): 2

Approach Angle: 40.0

Sedimentation At Inlet: Yes

Inlet Substrate: None

Outlet Substrate: None

	Inlet	Outlet
Width(ft):	5.0
Height(ft):	5.0
Apron Length(ft):
Water Depth(ft):		2.1
Rustline Height(ft):	3.0
Substrate Depth(ft):	0.0	0.0

Backwatered?: No

Baffles Present: No

Embedded?: No

Embedded Depth(ft): 0.0

Outfall Height: 2.25

Outfall Type: Free Fall In To Pool

Constriction Ratio: 0.31

Culvert Gradient: 1.14%

Max Slope:

Max Slope Length:

Comments: Notes Book 2; Inlet depth 3.5', rust line est, too deep to meas;

Culvert Observations:

Mechanical damage or joints parting
Inlet perch
Hydraulic flows exceeded capacity
Culvert gradient gray
Constriction ratio red
Outfall height red

Stream Measurements

Stream Substrates	Upstream	Downstream
Dominant:	Gravel	Gravel
Subdominant:	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	78.0	12.10
Upstream bank full	75.0	34.80
Upstream bank full	100.0	21.80
Upstream bank full	125.0	21.90
Upstream bank full	150.0	33.90
Upstream bed width	75.0	12.60
Upstream bed width	100.0	6.70
Upstream bed width	125.0	13.10
Upstream bed width	150.0	14.20
Upstream ordinary high water	75.0	16.10
Upstream ordinary high water	100.0	12.40
Upstream ordinary high water	125.0	15.80
Upstream ordinary high water	150.0	20.60

Elevations

Locator ID	Culvert Number	River Distance (ft)¹	Distance From Crossing (ft)²	Relative Elevation (ft)
Outlet Pool Water Elev				93.28
Max Pool Depth				5.50
U/S Thalweg				97.55
D/S Thalweg		0.00	78.0	90.34
D/S Tailcrest or 1st Thalweg		49.00	29.0	91.92
OHW (Outlet Tailcrest)		49.00	29.0	93.29
D/S Thalweg		73.00	5.0	4.80
Outlet Invert	1	78.00	0.0	93.43
Road Elev		97.00		100.45
Inlet Culvert Invert	1	116.00	0.0	93.87
U/S Thalweg		126.00	10.0	95.71
U/S Thalweg		173.00	57.0	97.91

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.