Fish Passage Improvement site 50101647

Fish Passage Site 50101647

Coordinates (dec. deg.): 64.64599°, -165.72641°
Legal Description: K010S035W05
Region: Arctic
Road Name: Teller Road

Datum: NAD83
Quad Name / ITM: Nome C-2
AWC Stream #:
Stream Name: Unnamed

Elevation:

Site Comments: Mile 17.1

Survey Date: Oct 04, 2005

Survey SEW05-TR08

site photos

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

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
Constriction ratio gray

Comments: Evidence of equipment in channel d/s of x-ing. Substrate in u/s pool = deep silt.

Culvert Measurements

ID: 1

Structure Type: Circular pipe (Corrugated steel)

Fish Passage Rating: Red

Length(ft): 60.6

Inlet Type: Mitered

Outlet Type: Mitered

Corrugation Depth(in.): 0.75

Corrugation Width(in.): 2.75

Condition Rating(1-5): 3

Approach Angle: 45.0

Sedimentation At Inlet:

Inlet Substrate: None

Outlet Substrate: None

	Inlet	Outlet
Width(ft):	4.0	4.0
Height(ft):	4.0	4.0
Apron Length(ft):
Water Depth(ft):		0.4
Rustline Height(ft):	0.4
Substrate Depth(ft):	0.0	0.0

Backwatered?: No

Baffles Present: No

Embedded?: No

Embedded Depth(ft): 0.0

Outfall Height: 0.65

Outfall Type: Free Fall In To Pool

Constriction Ratio: 0.54

Culvert Gradient: 3.71%

Max Slope:

Max Slope Length:

Comments: juv fish obs in pool u/s of inlet

Culvert Observations:

Culvert is poorly aligned
Outfall height red
Culvert gradient red
Constriction ratio gray

Stream Measurements

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

Stream Slope(deg.):
Stream Flow Stage:

Stream Width Type	Distance From Crossing (ft)	Stream Width (ft)
Downstream ordinary high water
Downstream ordinary high water	90.0	6.60
Upstream bank full	75.0	94.00
Upstream bank full	100.0	72.00
Upstream bank full	125.0	12.50
Upstream bank full	150.0	6.50
Upstream bed width	75.0	9.00
Upstream bed width	100.0	5.80
Upstream bed width	125.0	3.30
Upstream bed width	150.0	2.40
Upstream ordinary high water	75.0	13.50
Upstream ordinary high water	100.0	8.60
Upstream ordinary high water	125.0	4.50
Upstream ordinary high water	150.0	3.00

Elevations

Locator ID	Culvert Number	River Distance (ft)¹	Distance From Crossing (ft)²	Relative Elevation (ft)
Outlet Pool Water Elev				95.52
Max Pool Depth				1.50
U/S Thalweg				98.49
D/S Grade Ctrl (Thalweg)		0.00	90.0	91.95
D/S Tailcrest or 1st Thalweg		80.00	10.0	95.12
OHW (Outlet Tailcrest)		80.00	10.0	95.54
D/S Thalweg		85.00	5.0	1.10
Outlet Invert	1	90.00	0.0	95.77
Road Elev		120.00		105.23
Inlet Culvert Invert	1	150.00	0.0	98.02
U/S Grade Ctrl (Thalweg)		158.00	8.0	98.21
U/S Thalweg		225.00	75.0	97.49
U/S Thalweg		300.00	150.0	98.34

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.