Fish Passage Site 30103626

Coordinates (dec. deg.): 51.85192°, -176.65840°
Legal Description: S096S195W22
Region: Southwest
Road Name: Whiting Boulevard

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

Elevation:

Site Comments: Site is about 500' downstream from C109 and 250 feet upstream from C111

Survey Date: Sep 16, 2017

Survey ADAK17-C110

Observers: Mark Eisenman, Jeanette Alas

Overall Fish Passage Rating: Black

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


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. Concrete box culvert that has a 4' diameter CSP added to the outlet to extend culvert length. Possible gradient and low water depth barrier. Adult pink salmon observed upstream and downstream of culvert.

Culvert Measurements

ID: 1 Structure Type: Box culvert (Reinforced concrete) Fish Passage Rating: Black
 
Length(ft): 87.0
Inlet Type: Headwall
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):3.5 4.0
Height(ft):4.7 4.0
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: Circular corrugated steel pipe has been added to the end of the concrete box culvert to extend length. Culvert length estimated using aerial imagery. Maybe a low water depth barrier thought culvert. Culvert maybe constricted and have a red gradient.

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: 16 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: At Site Visual Observation, Ground (16)  
Comments: One adult pink salmon observed above culvert, 10-15 observed below culvert.

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