Fish Passage Site 30103654

Coordinates (dec. deg.): 51.90050°, -176.63516°
Legal Description: S095S195W35
Region: Southwest
Road Name: Hillside Boulevard

Datum: NAD83
Quad Name / ITM: Adak C-2
AWC Stream #: 306-70-10160
Stream Name: NavFac Creek

Elevation:

Site Comments: None

Survey Date: Sep 17, 2017

Survey ADAK17-C28

Observers: Mark Eisenman, Jeanette Alas

Overall Fish Passage Rating: Black

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Structural Problem
  2. Mechanical damage or joints parting

Comments: This information was gathered as part of the joint reconnaissance level project between the ADF&G Habitat Division and the Fish Passage Assessment Project on Adak Island. Due to time constraints full site assessments were not conducted, but base line information was collected. Adult pink salmon observed upstream and downstream of culverts. Constriction maybe an issue at this crossing. Culvert condition maybe an issue in the future.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Black
 
Length(ft): 65.0
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.):
Corrugation Width(in.):
Condition Rating(1-5): 2
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate:
Outlet Substrate:
InletOutlet
Width(ft):4.5 4.5
Height(ft):4.5 4.5
Apron Length(ft):
Water Depth(ft):
Rustline Height(ft):
Substrate Depth(ft):
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient:
Max Slope:
Max Slope Length:
 

Comments: Culvert lengths estimated using aerial imagery.
  Culvert Observations:
  1. Structural Problem
  2. Mechanical damage or joints parting
ID: 2 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Black
 
Length(ft): 65.0
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.):
Corrugation Width(in.):
Condition Rating(1-5): 2
Approach Angle:
Sedimentation At Inlet: Yes
Inlet Substrate:
Outlet Substrate:
InletOutlet
Width(ft):4.5 4.5
Height(ft):4.5 4.5
Apron Length(ft):
Water Depth(ft):
Rustline Height(ft):
Substrate Depth(ft):
Backwatered?: No
Baffles Present: Yes
Embedded?: No
Outfall Height:
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient:
Max Slope:
Max Slope Length:
 

Comments: Sediment wedge present between culvert inlets.
  Culvert Observations:
  1. Structural Problem
  2. Mechanical damage or joints parting

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:
Subdominant:
Stream Slope(deg.):
Stream Flow Stage:Medium

No stream width data available.

Elevations

No elevation data available.

Fish Sampling Efforts

Gear Type: Visual Observation, Ground (A)

Fish Observations

Species: adult spawning pink salmon Life History: Anadromous
Total Fish Observed: 200 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: At Site Visual Observation, Ground (200)  
Comments: Hundreds of pinks, both alive and spawning and carcasses observed upstream and downstream of culverts.

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