Fish Passage Improvement site 50101597

Fish Passage Site 50101597

Coordinates (dec. deg.): 64.97901°, -164.74774°
Legal Description: K006S030W09
Region: Arctic
Road Name: Kougarok Road

Datum: NAD83
Quad Name / ITM: Solomon D-6
AWC Stream #:
Stream Name: Unnamed

Elevation:

Site Comments: None

Survey Date: Sep 19, 2005

Survey SEW05-KR09

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:

Culvert is poorly aligned
Hydraulic flows exceeded capacity
Constriction ratio red
Culvert gradient red

Comments: Weir at outlet see photos. No outfall height recorded.

Culvert Measurements

ID: 1

Structure Type: Circular pipe (Corrugated steel)

Fish Passage Rating: Red

Length(ft): 40.5

Inlet Type: Mitered

Outlet Type: Mitered

Corrugation Depth(in.): 0.75

Corrugation Width(in.): 2.75

Condition Rating(1-5): 3

Approach Angle: 57.0

Sedimentation At Inlet: Yes

Inlet Substrate: None

Outlet Substrate: None

	Inlet	Outlet
Width(ft):	3.9
Height(ft):	3.9
Apron Length(ft):
Water Depth(ft):		1.6
Rustline Height(ft):	2.5
Substrate Depth(ft):	0.0	0.0

Backwatered?: No

Baffles Present: No

Embedded?: No

Embedded Depth(ft): 0.0

Outfall Height:

Outfall Type: Fish Passage Structue

Constriction Ratio: 0.27

Culvert Gradient: 6.00%

Max Slope:

Max Slope Length:

Culvert Observations:

Culvert is poorly aligned
Hydraulic flows exceeded capacity
Constriction ratio red
Culvert gradient red

Stream Measurements

Stream Substrates	Upstream	Downstream
Dominant:	Cobble	Cobble
Subdominant:	Gravel	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	175.0	12.60
Upstream bank full	75.0	23.90
Upstream bank full	100.0	24.00
Upstream bank full	125.0	23.70
Upstream bank full	150.0	61.00
Upstream bed width	75.0	7.80
Upstream bed width	100.0	6.40
Upstream bed width	125.0	19.00
Upstream bed width	150.0	15.50
Upstream ordinary high water	75.0	11.80
Upstream ordinary high water	100.0	11.40
Upstream ordinary high water	125.0	19.00
Upstream ordinary high water	150.0	15.50

Elevations

Locator ID	Culvert Number	River Distance (ft)¹	Distance From Crossing (ft)²	Relative Elevation (ft)
Max Pool Depth				2.00
Outlet Pool Water Elev				95.30
U/S Thalweg				97.10
D/S Thalweg		0.00	175.0	86.15
D/S Thalweg		50.00	125.0	89.48
D/S Tailcrest or 1st Thalweg		148.00	27.0	94.38
OHW (Outlet Tailcrest)		148.00	27.0	95.14
D/S Thalweg		170.00	5.0	1.70
Outlet Invert	1	175.00	0.0	93.41
Road Elev		195.00		103.83
Inlet Culvert Invert	1	215.00	0.0	95.84
U/S Thalweg		223.00	8.0	97.12
U/S Thalweg		340.00	125.0	102.45

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.