Fish Passage Improvement site 10103599

Fish Passage Site 10103599

Coordinates (dec. deg.): 55.72305°, -132.93448°
Legal Description: C071S081E12
Region: Southeast
Road Name: North Prince of Wales Road

Datum: NAD83
Quad Name / ITM: Craig C-3
AWC Stream #:
Stream Name: Unnamed

Elevation:

Site Comments: Mile 20.

Survey Date: Jul 18, 2017

Survey SEA17-NPW33

site photos

Observers: Elizabeth Flory, Kelly Petty

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:

Site Observations:

Culvert gradient red
Outfall height red

Comments: Upstream 50ft is an old culvert under old road fill. Above culvert is steep cascade. Downstream is fairly steep, lots of woody debris steps, lots of gravel, but not mnay pools. No fish captured. Stream gradient distance short.

Culvert Measurements

ID: 1

Structure Type: Circular pipe (Corrugated steel)

Fish Passage Rating: Red

Length(ft): 108.0

Inlet Type: Mitered

Outlet Type: Mitered

Corrugation Depth(in.): 0.5

Corrugation Width(in.): 4.5

Condition Rating(1-5): 3

Approach Angle: 10.0

Sedimentation At Inlet: Yes

Inlet Substrate: None

Outlet Substrate: None

	Inlet	Outlet
Width(ft):	2.98	3.11
Height(ft):	3.45	3.45
Apron Length(ft):
Water Depth(ft):		0.06
Rustline Height(ft):	1.1
Substrate Depth(ft):	0.0	0.0

Backwatered?: No

Baffles Present: No

Embedded?: No

Outfall Height: 1.48

Outfall Type: Free Fall on To Rip Rap

Constriction Ratio: 1.82

Culvert Gradient: 9.45%

Max Slope:

Max Slope Length:

Comments: Unsure on invert substrate as inlet and outlet heights recorded are greater than widths so not representing substrate depth. Top of culvert length 100'.

Stream Measurements

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

Stream Slope(deg.):	18.64
Stream Flow Stage:	Medium

Stream Width Type	Distance From Crossing (ft)	Stream Width (ft)
Upstream ordinary high water	60.0	1.40
Upstream ordinary high water	90.0	2.00
Upstream ordinary high water	120.0	1.50

Elevations

Locator ID	River Distance (ft)¹	Relative Elevation (ft)
Road Elev		122.83
D/S Grade Ctrl (Thalweg)	0.00	92.44
D/S Water Surface Elev	0.00	92.67
D/S Grade Ctrl (Thalweg)	25.00	97.67
D/S Water Surface Elev	25.00	97.74
D/S Tailcrest or 1st Thalweg (cobble)	31.00	99.02
D/S Water Surface Elev	31.00	99.16
D/S Water Surface Elev	36.00	99.15
Max Pool Depth	36.00	97.91
Outlet Invert (on pipe)	46.00	100.57
D/S Water Surface Elev	46.00	100.63
Outlet Culvert Top	50.00	104.17
Inlet Culvert Top	150.00	113.34
Inlet Culvert Invert (on pipe)	154.00	110.78
U/S Water Surface Elev	154.00	111.15
U/S Grade Ctrl (Thalweg)	159.00	111.84
U/S Water Surface Elev	159.00	112.12
U/S Grade Ctrl (Thalweg)	180.00	115.13
U/S Water Surface Elev	180.00	115.38

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.

Fish Sampling Efforts

Gear Type: Minnow Trap (A)		Trap Duration(h): 1.7
Comments: no fish

Gear Type: Minnow Trap (B)		Trap Duration(h): 1.7
Comments: no fish

Fish Observations

No fish observations occurred during this survey.

Photos

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