Fish Passage Site 20203731

Coordinates (dec. deg.): 60.19142°, -149.37514°
Legal Description: S001N001W12
Region: South Central
Road Name: Seward Highway

Datum: NAD83
Quad Name / ITM: Seward A-7
AWC Stream #: 231-30-10080-2010-3065-4110
Stream Name: Unnamed

Elevation:

Site Comments: Unnamed tributary to Lost Creek.

Survey Date: Aug 09, 2017

Survey KEN17-45_2007

Observers: Louis Mitchell, Luke Violette, Mary Richardson

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Constriction ratio red
  2. Hydraulic flows exceeded capacity

Comments: KWFRES_17_19. Culvert Assessment submitted by Kenai Watershed Forum. Adult salmon observed, maybe sockeye?, downstream of culvert and eventually observed moving upstream through culvert. Dolly Varden char captured upstream.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 152.5
Inlet Type: Headwall
Outlet Type: Headwall
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5): 2
Approach Angle: 0.0
Sedimentation At Inlet: No
Inlet Substrate: Cobble
Outlet Substrate: Gravel
InletOutlet
Width(ft):3.5 3.5
Height(ft):3.25 3.3
Apron Length(ft):
Water Depth(ft): 1.08
Rustline Height(ft):2.0
Substrate Depth(ft):0.25 0.25
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.3
Culvert Gradient:
Max Slope:
Max Slope Length:
 

Comments: Culvert extremely rusty, rust line very high. Deterioration of culvert documented. Culvert is protruding from cement headwall at both inverts.
  Culvert Observations:
  1. Constriction ratio red
  2. Hydraulic flows exceeded capacity

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:
Subdominant:
Stream Slope(deg.):0.12
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 25.0 12.00
Downstream ordinary high water 50.0 14.50
Downstream ordinary high water 75.0 13.25
Upstream ordinary high water 30.0 15.00
Upstream ordinary high water 50.0 12.00
Upstream ordinary high water 70.0 11.00
Upstream ordinary high water 90.0 8.00

Elevations

No elevation data available.

Fish Sampling Efforts

Gear Type: Minnow Trap (A) Trap Duration(h): 2.0
Comments: Trap set about 70 feet upstream.
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.75
Comments: Trap set about 80 feet downstream
 
Gear Type: Visual Observation, Ground (C)

Fish Observations

Species: juvenile/adult Dolly Varden Life History: Unknown
Total Fish Observed: 1 Fish Measured: 1 Fork Lengths (mm) Min: 125 Max: 125 Mean: 125
Collected/Observed by Gear Type: Upstream Minnow Trap (1)  
 
Species: adult spawning Pacific salmon-unspecified Life History: Anadromous
Total Fish Observed: 2 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: At Site Visual Observation, Ground (2)  
Comments: Adult salmon observed downstream and then moving upstream through culvert, maybe sockeye from photos.

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