Fish Passage Improvement site 50101570

Fish Passage Site 50101570

Coordinates (dec. deg.): 64.69826°, -164.16863°
Legal Description: K009S028W24
Region: Arctic
Road Name: Council Road

Datum: NAD83
Quad Name / ITM: Solomon C-5
AWC Stream #:
Stream Name: East Fork Solomon tributary

Elevation:

Site Comments: Mile 48.5. Old trail leading down to crossing.

Survey Date: Jul 04, 2006

Survey SEW05-COR15

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:

Culvert is poorly aligned
Sediment accumulation
Constriction ratio red
Culvert gradient red

Comments: None

Culvert Measurements

ID: 1

Structure Type: Circular pipe (Corrugated steel)

Fish Passage Rating: Red

Length(ft): 92.4

Inlet Type: Flush

Outlet Type: Flush

Corrugation Depth(in.): 0.5

Corrugation Width(in.): 2.75

Condition Rating(1-5): 3

Approach Angle: 96.0

Sedimentation At Inlet: Yes

Inlet Substrate: None

Outlet Substrate: None

	Inlet	Outlet
Width(ft):	3.85	4.85
Height(ft):	3.85	4.95
Apron Length(ft):
Water Depth(ft):		0.2
Rustline Height(ft):	1.35
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: 0.41

Culvert Gradient: 3.94%

Max Slope:

Max Slope Length:

Comments: main flow offset to right of inlet, large gravel bar formed directly in front of inlet

Culvert Observations:

Culvert is poorly aligned
Sediment accumulation
Constriction ratio red
Culvert gradient 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
Upstream bank full	125.0	21.90
Upstream bank full	150.0	12.00
Upstream bank full	225.0	12.50
Upstream bank full	275.0	11.00
Upstream bed width
Upstream ordinary high water	125.0	13.00
Upstream ordinary high water	150.0	9.70
Upstream ordinary high water	225.0	6.80
Upstream ordinary high water	275.0	8.00

Elevations

Locator ID	Culvert Number	River Distance (ft)¹	Distance From Crossing (ft)²	Relative Elevation (ft)
Outlet Pool Water Elev				82.35
Max Pool Depth				1.30
D/S Grade Ctrl (Thalweg)		0.00	275.0	76.34
D/S Grade Ctrl (Thalweg)		159.00	116.0	79.45
D/S Grade Ctrl (Thalweg)		208.00	67.0	80.13
D/S Grade Ctrl (Thalweg)		259.00	16.0	81.39
D/S Tailcrest or 1st Thalweg		266.00	9.0	81.79
OHW (Outlet Tailcrest)		266.00	9.0	82.55
Bankfull		266.00	9.0	83.05
D/S Thalweg		270.00	5.0	0.70
Outlet Invert	1	275.00	0.0	82.13
D/S Grade Ctrl (Thalweg)		275.00	0.0	81.54
Road Elev		321.00		107.68
Inlet Culvert Invert	1	367.00	0.0	85.77
U/S Grade Ctrl (Thalweg)		367.00	0.0	86.35
U/S Grade Ctrl (Thalweg)		368.80	1.8	86.45
U/S Grade Ctrl (Thalweg)		377.00	10.0	86.69
U/S Grade Ctrl (Thalweg)		391.00	24.0	87.16
U/S Grade Ctrl (Thalweg)		417.00	50.0	88.22
U/S Grade Ctrl (Thalweg)		502.00	135.0	90.22
U/S Grade Ctrl (Thalweg)		592.00	225.0	91.93

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.