Fish Passage Site 20502133

Coordinates (dec. deg.): 61.76110°, -150.04930°
Legal Description: S019N004W05
Region: South Central
Road Name: Alaska Railroad

Datum: NAD83
Quad Name / ITM: Tyonek D-1
AWC Stream #: 247-41-10200-2120-3018
Stream Name: Gene Creek

Elevation:

Site Comments: Alaska RR at MP 186.7. Site on the railroad near Willow-Fishhook road.

Survey Date: Sep 12, 2011

Survey MSB11-AKR01

Project Supervisor: Gillian O'Doherty, Alaska Department of Fish and Game — Anchorage, AK
Observers: Abraham Gioffre, Jim Latham

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Culvert gradient gray
  2. Mechanical damage or joints parting

Comments: Site on the railroad near Willow-Fishhook road. At outlet the bank is undercut and has a riffle out of outlet into a glide. Upst area has a riffle near the inlet with a pool upst.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Structural steel plate) Fish Passage Rating: Gray
 
Length(ft): 55.0
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 6.0
Condition Rating(1-5): 3
Approach Angle: 40.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):7.0 7.0
Height(ft):7.0 7.0
Apron Length(ft):
Water Depth(ft): 0.33
Rustline Height(ft):2.0
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.2
Outfall Type: Free Fall In To Pool
Constriction Ratio: 1.1
Culvert Gradient: 1.10%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert gradient gray
  2. Mechanical damage or joints parting

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:SandSilt/Clay
Subdominant:GravelGravel
Stream Slope(deg.):1.5
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 45.0 6.60
Upstream ordinary high water 83.0 7.70
Upstream ordinary high water 109.0 5.50

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg (profile pt) 0.00 83.30
D/S Water Surface Elev 0.00 85.16
D/S Tailcrest or 1st Thalweg (tailwater control) 4.00 85.09
D/S Water Surface Elev 4.00 85.60
D/S Water Surface Elev 46.00 85.62
Max Pool Depth (max pool) 46.00 82.78
Outlet Culvert Top 51.00 92.70
Outlet Invert (invert on pipe) 51.00 85.49
D/S Water Surface Elev (outlet water surface) 51.00 85.82
Road Elev 76.00 100.00
Inlet Culvert Top 106.00 93.39
Inlet Culvert Invert (invert on pipe) 106.00 86.09
U/S Water Surface Elev (inlet water surface) 106.00 86.65
U/S Water Surface Elev 119.00 86.72
U/S Thalweg (profile pt in glide) 119.00 85.78
U/S Water Surface Elev (water surface for gradient) 152.00 87.88
U/S Water Surface Elev (water surface for gradient) 236.00 89.18

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