Fish Passage Site 30103623

Coordinates (dec. deg.): 51.85326°, -176.66022°
Legal Description: S096S195W15
Region: Southwest
Road Name:

Datum: NAD83
Quad Name / ITM: Adak C-2
AWC Stream #: 306-70-10223
Stream Name: Helmet Creek

Elevation:

Site Comments: Site is next to an old fuel tank containment area and is not a road. C109 is directly downstream of this site.

Survey Date: Sep 16, 2017

Survey ADAK17-C108

Observers: Mark Eisenman, Jeanette Alas

Overall Fish Passage Rating: Black

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Inlet perch

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. Site is next to an old fuel tank containment area and looks like it was installed to provide support for the pad. There is no road or crossing over top of culvert.

Culvert Measurements

ID: 1 Structure Type: Pipe-arch (Corrugated steel) Fish Passage Rating: Black
 
Length(ft): 58.0
Inlet Type: Flared Inlet
Outlet Type: Flared Inlet
Corrugation Depth(in.):
Corrugation Width(in.):
Condition Rating(1-5): 3
Approach Angle:
Sedimentation At Inlet: Yes
Inlet Substrate:
Outlet Substrate:
InletOutlet
Width(ft):7.0 7.0
Height(ft):4.0 4.0
Apron Length(ft):
Water Depth(ft):
Rustline Height(ft):
Substrate Depth(ft):
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient:
Max Slope:
Max Slope Length:
 

Comments: Inlet and outlet both have attached flares. Some sediement in culvert and flares. Sediement accumulation at inlet causing a small inlet perch.
  Culvert Observations:
  1. Inlet perch

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: carcass pink salmon Life History: Anadromous
Total Fish Observed: 10 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: At Site Visual Observation, Ground (10)  
Comments: Adult pink carcasses observed upstream and downstream of culvert.

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