Fish Passage Improvement site 50101581

Fish Passage Site 50101581

Coordinates (dec. deg.): 64.47090°, -165.17673°
Legal Description: K012S033W01
Region: Arctic
Road Name: Council Road

Datum: NAD83
Quad Name / ITM: Nome B-1
AWC Stream #:
Stream Name: Cunningham Creek

Elevation:

Site Comments: Mile 7.2. Cunningham Creek has road sign.

Survey Date: Oct 13, 2005

Survey SEW05-COR26

site photos

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

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:

Site Observations:

Mechanical damage or joints parting
Constriction ratio gray

Comments: None

Culvert Measurements

ID: 1

Structure Type: Circular pipe (Corrugated steel)

Fish Passage Rating: Gray

Length(ft): 67.0

Inlet Type: Mitered

Outlet Type: Mitered

Corrugation Depth(in.): 0.75

Corrugation Width(in.): 2.75

Condition Rating(1-5): 2

Approach Angle: 4.0

Sedimentation At Inlet:

Inlet Substrate: Gravel

Outlet Substrate: Gravel

	Inlet	Outlet
Width(ft):	3.7
Height(ft):	4.0
Apron Length(ft):
Water Depth(ft):		0.5
Rustline Height(ft):	2.0
Substrate Depth(ft):	0.4	0.9

Backwatered?: No

Baffles Present: No

Embedded?: No

Embedded Depth(ft): 0.65

Outfall Height: 0.01

Outfall Type:

Constriction Ratio: 0.58

Culvert Gradient: 0.94%

Max Slope:

Max Slope Length:

Comments: pipe contains substrate but not a min of 20% of diameter

Culvert Observations:

Mechanical damage or joints parting
Constriction ratio gray

Stream Measurements

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

Stream Slope(deg.):
Stream Flow Stage:

Stream Width Type	Distance From Crossing (ft)	Stream Width (ft)
Downstream ordinary high water	55.0	10.00
Downstream ordinary high water	115.0	6.70
Upstream bank full	75.0	15.00
Upstream bank full	100.0	7.50
Upstream bank full	125.0	5.20
Upstream bank full	150.0	8.00
Upstream bed width	75.0	5.30
Upstream bed width	100.0	3.60
Upstream bed width	125.0	3.10
Upstream bed width	150.0	6.00
Upstream ordinary high water	75.0	10.00
Upstream ordinary high water	100.0	5.10
Upstream ordinary high water	125.0	3.30
Upstream ordinary high water	150.0	7.00

Elevations

Locator ID	Culvert Number	River Distance (ft)¹	Distance From Crossing (ft)²	Relative Elevation (ft)
Max Pool Depth				0.70
Outlet Pool Water Elev				87.14
D/S Grade Ctrl (Thalweg)		0.00	115.0	84.30
D/S Tailcrest or 1st Thalweg		107.00	8.0	86.88
OHW (Outlet Tailcrest)		107.00	8.0	87.29
D/S Thalweg		110.00	5.0	0.60
Outlet Invert	1	115.00	0.0	86.55
Road Elev		148.50		102.76
Inlet Culvert Invert	1	182.00	0.0	87.18
U/S Grade Ctrl (Thalweg)		185.00	3.0	88.17
U/S Grade Ctrl (Thalweg)		189.00	7.0	88.46
U/S Grade Ctrl (Thalweg)		204.00	22.0	88.17
U/S Thalweg		257.00	75.0	89.14
U/S Thalweg		332.00	150.0	90.12

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.