Fish Passage Site 30103674

Coordinates (dec. deg.): 51.89409°, -176.66709°
Legal Description: S096S195W03
Region: Southwest
Road Name: Old Military Road

Datum: NAD83
Quad Name / ITM: Adak C-2
AWC Stream #:
Stream Name: Airport Creek

Elevation:

Site Comments: Crossing is above documented anadromy.

Survey Date: Sep 16, 2017

Survey ADAK17-C75

Observers: Mark Eisenman, Jeanette Alas

Overall Fish Passage Rating: Black

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Structural Problem

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.

Culvert Measurements

ID: 1 Structure Type: Pipe-arch (Corrugated steel) Fish Passage Rating: Black
 
Length(ft): 41.0
Inlet Type: Headwall
Outlet Type: Headwall
Corrugation Depth(in.):
Corrugation Width(in.):
Condition Rating(1-5): 2
Approach Angle:
Sedimentation At Inlet: Yes
Inlet Substrate: Cobble
Outlet Substrate: Cobble
InletOutlet
Width(ft):4.8 4.8
Height(ft):2.8 2.8
Apron Length(ft):
Water Depth(ft):
Rustline Height(ft):
Substrate Depth(ft):
Backwatered?: No
Baffles Present: No
Embedded?: Maybe
Outfall Height:
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient:
Max Slope:
Max Slope Length:
 

Comments: Culvert length estimated from aerial imagery. Culvert looks to have substrate throughout culvert, maybe embedded. Substrate in barrel of culvert likely naturally deposited. Constriction may be an issue with this site. Culvert shows significant rustline and pitting. Concrete pillow headwalls.
  Culvert Observations:
  1. Structural Problem
ID: 2 Structure Type: Pipe-arch (Corrugated steel) Fish Passage Rating: Black
 
Length(ft): 41.0
Inlet Type: Headwall
Outlet Type: Headwall
Corrugation Depth(in.):
Corrugation Width(in.):
Condition Rating(1-5): 2
Approach Angle:
Sedimentation At Inlet: Yes
Inlet Substrate: Cobble
Outlet Substrate: Cobble
InletOutlet
Width(ft):4.8 4.8
Height(ft):2.8 2.8
Apron Length(ft):
Water Depth(ft):
Rustline Height(ft):
Substrate Depth(ft):
Backwatered?: No
Baffles Present: No
Embedded?: Maybe
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient:
Max Slope:
Max Slope Length:
 

Comments: Culvert length estimated from aerial imagery. Culvert looks to have substrate throughout culvert, maybe embedded. Substrate in barrel of culvert likely naturally deposited. Constriction may be an issue with this site. Culvert shows significant rustline and pitting. Concrete pillow headwalls.
  Culvert Observations:
  1. Structural Problem

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: Smith-Root LR-24 (A)
 
Gear Type: Visual Observation, Ground (B)

Fish Observations

Species: juvenile/adult Dolly Varden Life History: Unknown
Total Fish Observed: 8 Fish Measured: 3 Fork Lengths (mm) Min: 40 Max: 77 Mean: 59
Collected/Observed by Gear Type: Upstream Visual Observation, Ground (5)  Upstream Smith-Root LR-24 (3)  
Comments: 5 additional Dolly Varden observed but not captured upstream.

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