Fish Passage Site 30103685

Coordinates (dec. deg.): 51.87510°, -176.65584°
Legal Description: S096S195W10
Region: Southwest
Road Name: Airport Access

Datum: NAD83
Quad Name / ITM: Adak C-2
AWC Stream #:
Stream Name: South Sweeper

Elevation:

Site Comments: None

Survey Date: Sep 07, 2017

Survey ADAK17-C98

Observers: Mark Eisenman, Jeanette Alas

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Outfall height red

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. Deep outlet pool, C2 blocked and most flow being forced into C1. Outfall greater than 0.40 inches for both culverts. Pinks observed upstream and downstream of culvert.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 120.0
Inlet Type:
Outlet Type:
Corrugation Depth(in.):
Corrugation Width(in.):
Condition Rating(1-5): 3
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate:
Outlet Substrate:
InletOutlet
Width(ft):4.0 4.0
Height(ft):4.0 4.0
Apron Length(ft):
Water Depth(ft):
Rustline Height(ft):
Substrate Depth(ft):
Backwatered?:
Baffles Present:
Embedded?:
Outfall Height:
Outfall Type: Free Fall In To Pool
Constriction Ratio:
Culvert Gradient:
Max Slope:
Max Slope Length:
 

Comments: Length estimated using aerial imagery. Outfall height over .40".
  Culvert Observations:
  1. Outfall height red
ID: 2 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 120.0
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.):
Corrugation Width(in.):
Condition Rating(1-5): 3
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate:
Outlet Substrate:
InletOutlet
Width(ft):
Height(ft):
Apron Length(ft):
Water Depth(ft):
Rustline Height(ft):
Substrate Depth(ft):
Backwatered?: No
Baffles Present: No
Embedded?:
Outfall Height:
Outfall Type: Free Fall In To Pool
Constriction Ratio:
Culvert Gradient:
Max Slope:
Max Slope Length:
 

Comments: Outfall hieght greater than 0.40 inches. Culvert is blocked at inlet and most flow being forced into C1. Culvert length estimated using aerial imagery.
  Culvert Observations:
  1. Outfall height red

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: 6 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: At Site Visual Observation, Ground (6)  
Comments: One adult observed above and below culvert, 5 carcasses observed below culvert.

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