Fish Passage Improvement site 50101635

Fish Passage Site 50101635

Coordinates (dec. deg.): 64.50330°, -165.39351°
Legal Description: K011S034W25
Region: Arctic
Road Name: Nome Bypass

Datum: NAD83
Quad Name / ITM: Nome C-1
AWC Stream #:
Stream Name: Dry Creek

Elevation:

Site Comments: Only culvert on Nome Bypass. Fire hydrant located 135' SE of crossing.

Survey Date: Oct 12, 2005

Survey SEW05-NB01

site photos

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

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:

Site Observations:

Mechanical damage or joints parting
Outfall height gray
Culvert gradient red
Constriction ratio red

Comments: None

Culvert Measurements

ID: 1

Structure Type: Circular pipe (Corrugated steel)

Fish Passage Rating: Red

Length(ft): 64.3

Inlet Type: Mitered

Outlet Type: Mitered

Corrugation Depth(in.): 1.0

Corrugation Width(in.): 3.0

Condition Rating(1-5): 2

Approach Angle: 10.0

Sedimentation At Inlet: Yes

Inlet Substrate: Cobble

Outlet Substrate: None

	Inlet	Outlet
Width(ft):	7.3
Height(ft):	5.0
Apron Length(ft):
Water Depth(ft):		0.7
Rustline Height(ft):	1.4
Substrate Depth(ft):	2.2	0.0

Backwatered?: No

Baffles Present: No

Embedded?: No

Embedded Depth(ft): 0.0

Outfall Height: 0.12

Outfall Type:

Constriction Ratio: 0.34

Culvert Gradient: 2.24%

Max Slope:

Max Slope Length:

Culvert Observations:

Mechanical damage or joints parting
Outfall height gray
Culvert gradient red
Constriction ratio red

Stream Measurements

Stream Substrates	Upstream	Downstream
Dominant:
Subdominant:

Stream Slope(deg.):
Stream Flow Stage:

Stream Width Type	Distance From Crossing (ft)	Stream Width (ft)
Downstream ordinary high water
Upstream bank full	75.0	20.00
Upstream bank full	100.0	20.10
Upstream bank full	125.0	45.40
Upstream bank full	150.0	33.10
Upstream bed width	75.0	12.30
Upstream bed width	100.0	13.20
Upstream bed width	125.0	28.90
Upstream bed width	150.0	25.50
Upstream ordinary high water	75.0	13.70
Upstream ordinary high water	100.0	14.30
Upstream ordinary high water	125.0	31.50
Upstream ordinary high water	150.0	27.40

Elevations

Locator ID	Culvert Number	River Distance (ft)¹	Distance From Crossing (ft)²	Relative Elevation (ft)
Max Pool Depth				4.50
Outlet Pool Water Elev				87.09
U/S Thalweg				88.79
D/S Thalweg		0.00	125.0	85.77
D/S Tailcrest or 1st Thalweg		82.00	43.0	86.53
OHW (Outlet Tailcrest)		82.00	43.0	87.60
D/S Thalweg		120.00	5.0	2.70
Outlet Invert	1	125.00	0.0	86.51
Road Elev		157.00		99.23
Inlet Culvert Invert	1	189.00	0.0	87.95
U/S Grade Ctrl (Thalweg)		191.00	2.0	88.16
U/S Thalweg		203.00	14.0	87.40
U/S Thalweg		264.00	75.0	87.24
U/S Thalweg		339.00	150.0	87.56

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.