Fish Passage Improvement site 50101632

Fish Passage Site 50101632

Coordinates (dec. deg.): 64.57044°, -165.27127°
Legal Description: K011S033W04
Region: Arctic
Road Name: Kougarok Road

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

Elevation:

Site Comments: None

Survey Date: Oct 10, 2005

Survey SEW05-KR44

site photos

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

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: Yes
Construction Year:

Site Observations:

Outfall height red
Culvert gradient red
Constriction ratio gray

Comments: None

Culvert Measurements

ID: 1

Structure Type: Circular pipe (Corrugated steel)

Fish Passage Rating: Red

Length(ft): 66.6

Inlet Type: Mitered

Outlet Type: Mitered

Corrugation Depth(in.): 0.75

Corrugation Width(in.): 2.75

Condition Rating(1-5): 3

Approach Angle: 1.0

Sedimentation At Inlet:

Inlet Substrate: None

Outlet Substrate: None

	Inlet	Outlet
Width(ft):	5.9
Height(ft):	6.1
Apron Length(ft):
Water Depth(ft):		0.5
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: 1.75

Outfall Type:

Constriction Ratio: 0.61

Culvert Gradient: 4.17%

Max Slope:

Max Slope Length:

Comments: slight mech damage at outlet; well defined rustline through pipe

Culvert Observations:

Outfall height red
Culvert gradient red
Constriction ratio gray

Stream Measurements

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

Stream Slope(deg.):
Stream Flow Stage:

Stream Width Type	Distance From Crossing (ft)	Stream Width (ft)
Downstream ordinary high water	31.0	13.50
Downstream ordinary high water	106.0	7.00
Upstream bank full	75.0	18.50
Upstream bank full	100.0	17.60
Upstream bank full	125.0	14.00
Upstream bank full	150.0	20.40
Upstream bed width	75.0	7.50
Upstream bed width	100.0	6.30
Upstream bed width	125.0	7.10
Upstream bed width	150.0	10.80
Upstream ordinary high water	75.0	8.40
Upstream ordinary high water	100.0	8.20
Upstream ordinary high water	125.0	7.50
Upstream ordinary high water	150.0	14.30

Elevations

Locator ID	Culvert Number	River Distance (ft)¹	Distance From Crossing (ft)²	Relative Elevation (ft)
Outlet Pool Water Elev				92.69
Max Pool Depth				1.50
D/S Grade Ctrl (Thalweg)		0.00	106.0	91.29
D/S Tailcrest or 1st Thalweg		83.00	23.0	93.33
OHW (Outlet Tailcrest)		83.00	23.0	93.76
D/S Grade Ctrl (Thalweg)		97.00	9.0	92.54
D/S Grade Ctrl (Thalweg)		98.50	7.5	93.51
D/S Thalweg		101.00	5.0	0.70
D/S Grade Ctrl (Thalweg)		102.00	4.0	93.57
Outlet Invert	1	106.00	0.0	93.94
Road Elev		139.00		107.10
Inlet Culvert Invert	1	172.00	0.0	96.72
U/S Thalweg		184.00	12.0	97.81
U/S Grade Ctrl (Thalweg)		189.00	17.0	98.03
U/S Thalweg		247.00	75.0	98.71
U/S Thalweg		322.00	150.0	100.92

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.