Fish Passage Site 50101639

Coordinates (dec. deg.): 64.50214°, -165.41790°
Legal Description: K011S034W26
Region: Arctic
Road Name: Seppala Drive

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

Elevation:

Site Comments: Runs into Nome Harbor. Tidal.

Survey Date: Oct 12, 2005

Survey SEW05-SD01

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

Overall Fish Passage Rating: Green

Tidal: Yes
Backwatered: Maybe

Step Pools: No
Construction Year:


Site Observations:

  1. Hydraulic flows exceeded capacity
  2. Mechanical damage or joints parting
  3. Culvert is poorly aligned

Comments: This section of Dry Creek is tidally influenced and the culvert outlets empty into Nome Harbor. Oily film observed on water, water smelled of petroleum, old oil and diesel.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Structural steel plate) Fish Passage Rating: Green
 
Length(ft): 62.5
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 6.0
Condition Rating(1-5): 2
Approach Angle: 84.0
Sedimentation At Inlet:
Inlet Substrate: Gravel
Outlet Substrate: None
InletOutlet
Width(ft):7.1
Height(ft):6.9
Apron Length(ft):
Water Depth(ft): 1.6
Rustline Height(ft):3.2
Substrate Depth(ft):0.5 0.5
Backwatered?: No
Baffles Present: No
Embedded?: No
Embedded Depth(ft): 0.0
Outfall Height: 0.0
Outfall Type:
Constriction Ratio: 0.26
Culvert Gradient: 0.00%
Max Slope:
Max Slope Length:
 

Comments: pipe ends are nearly flush with fill slope; tidal
  Culvert Observations:
  1. Culvert is poorly aligned
  2. Mechanical damage or joints parting
  3. Hydraulic flows exceeded capacity
ID: 2 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Green
 
Length(ft): 58.4
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 0.75
Corrugation Width(in.): 2.75
Condition Rating(1-5): 2
Approach Angle: 84.0
Sedimentation At Inlet:
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):6.2
Height(ft):5.8
Apron Length(ft):
Water Depth(ft): 1.0
Rustline Height(ft):2.4
Substrate Depth(ft):0.0 0.0
Backwatered?:
Baffles Present: No
Embedded?: No
Embedded Depth(ft): 0.0
Outfall Height: 0.0
Outfall Type:
Constriction Ratio: 0.26
Culvert Gradient: 0.36%
Max Slope:
Max Slope Length:
 

Comments: pipe ends are flush with fill slope;
  Culvert Observations:
  1. Culvert is poorly aligned
  2. Mechanical damage or joints parting
  3. Hydraulic flows exceeded capacity

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelSilt/Clay
Subdominant:GravelBoulder
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water
Upstream bank full
Upstream bed width 75.0 20.00
Upstream bed width 100.0 26.50
Upstream bed width 125.0 44.00
Upstream bed width 150.0 54.00
Upstream ordinary high water 75.0 20.00
Upstream ordinary high water 100.0 26.50
Upstream ordinary high water 125.0 44.00
Upstream ordinary high water 150.0 54.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Outlet Pool Water Elev 88.77
D/S Thalweg 1 0.00 38.0 87.03
D/S Thalweg 2 2.00 36.0 86.68
Outlet Invert 1 38.00 0.0 87.75
Outlet Invert 2 38.00 0.0 88.17
Road Elev 68.00 98.84
Inlet Culvert Invert 2 98.00 0.0 88.38
Inlet Culvert Invert 1 98.00 0.0 87.75
U/S Thalweg 107.00 9.0 88.99
U/S Thalweg 2 110.00 12.0 88.66
U/S Thalweg 1 110.00 12.0 87.95
U/S Thalweg 173.00 75.0 87.26

Notes:

  1. River distance is measured continuously throughout the survey reach along the thalweg of the stream.
  2. Measured from each end of the crossing along the thalweg of the stream.

Fish Sampling Efforts

No fish sampling occurred during this survey.

Fish Observations

No fish observations occurred during this survey.

Questions or comments about this report can be directed to dfg.dsf.webmaster@alaska.gov