Fish Passage Improvement site 50101573

Fish Passage Site 50101573

Coordinates (dec. deg.): 64.69140°, -164.24541°
Legal Description: K009S028W22
Region: Arctic
Road Name: Council Road

Datum: NAD83
Quad Name / ITM: Solomon C-5
AWC Stream #:
Stream Name: Unnamed

Elevation:

Site Comments: Mile 46.05

Survey Date: Jul 05, 2006

Survey SEW05-COR18

site photos

Project Supervisor: Dave Ryland,
Observers: Dave Ryland, Kyle Negri

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:

Site Observations:

Sediment accumulation
Culvert gradient red
Constriction ratio red

Comments: Large grav/cobble bar formed directly in front of inlet. Two additional 48" overlfow pipes not surveyed. Snow in channel during survey. Bedrock steps downstream. Small fish observed 225' downstream.

Culvert Measurements

ID: 1

Structure Type: Circular pipe (Corrugated steel)

Fish Passage Rating: Red

Length(ft): 86.5

Inlet Type: Flush

Outlet Type: Flush

Corrugation Depth(in.): 0.5

Corrugation Width(in.): 2.75

Condition Rating(1-5): 3

Approach Angle: 8.0

Sedimentation At Inlet: Yes

Inlet Substrate: None

Outlet Substrate: None

	Inlet	Outlet
Width(ft):	4.85	4.45
Height(ft):	5.0	5.0
Apron Length(ft):
Water Depth(ft):		1.15
Rustline Height(ft):	1.2
Substrate Depth(ft):	0.0	0.0

Backwatered?: No

Baffles Present: No

Embedded?: No

Embedded Depth(ft): 0.0

Outfall Height: 0.0

Outfall Type:

Constriction Ratio: 0.43

Culvert Gradient: 3.98%

Max Slope:

Max Slope Length:

Comments: large grav/cobble bar formed directly in front of inlet

Culvert Observations:

Sediment accumulation
Culvert gradient red
Constriction ratio red

Stream Measurements

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

Stream Slope(deg.):
Stream Flow Stage:

Stream Width Type	Distance From Crossing (ft)	Stream Width (ft)
Downstream ordinary high water
Downstream ordinary high water	225.0	16.30
Upstream bank full	125.0	11.60
Upstream bank full	150.0	9.20
Upstream bank full	200.0	16.70
Upstream bank full	300.0	14.80
Upstream bed width
Upstream ordinary high water	125.0	10.90
Upstream ordinary high water	150.0	8.00
Upstream ordinary high water	200.0	13.90
Upstream ordinary high water	300.0	11.90

Elevations

Locator ID	Culvert Number	River Distance (ft)¹	Distance From Crossing (ft)²	Relative Elevation (ft)
Outlet Pool Water Elev				86.93
Max Pool Depth				2.45
D/S Grade Ctrl (Thalweg)		0.00	225.0	80.15
D/S Grade Ctrl (Thalweg)		53.00	172.0	80.52
D/S Grade Ctrl (Thalweg)		84.00	141.0	81.69
D/S Grade Ctrl (Thalweg)		148.00	77.0	84.50
D/S Tailcrest or 1st Thalweg		205.00	20.0	86.30
OHW (Outlet Tailcrest)		205.00	20.0	87.35
D/S Thalweg		220.00	5.0	2.45
Outlet Invert	1	225.00	0.0	85.78
Road Elev		268.00		105.40
Inlet Culvert Invert	1	311.00	0.0	89.22
U/S Grade Ctrl (Thalweg)		312.00	1.0	89.79
U/S Grade Ctrl (Thalweg)		317.00	6.0	90.40
U/S Grade Ctrl (Thalweg)		326.00	15.0	90.94
U/S Grade Ctrl (Thalweg)		353.00	42.0	91.83
U/S Grade Ctrl (Thalweg)		395.00	84.0	92.79
U/S Grade Ctrl (Thalweg)		444.00	133.0	93.79
U/S Grade Ctrl (Thalweg)		486.00	175.0	94.71

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.