Fish Passage Site 30103624

Coordinates (dec. deg.): 51.85310°, -176.66003°
Legal Description: S096S195W15
Region: Southwest
Road Name: Cross Road

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

Elevation:

Site Comments: C108 is about 30 feet upstream and C110 is about 500 feet downstream.

Survey Date: Sep 16, 2017

Survey ADAK17-C109

Observers: Mark Eisenman, Jeanette Alas

Overall Fish Passage Rating: Black

Tidal: No
Backwatered: Maybe

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. Adult pinks alive and carcasses observed upstream and downstream from culvert. Flood control gate at outlet. Water level looks fairly flat through culvert, but site might be constricted.

Culvert Measurements

ID: 1 Structure Type: Box culvert (Reinforced concrete) Fish Passage Rating: Black
 
Length(ft): 98.0
Inlet Type: Headwall
Outlet Type: Headwall
Corrugation Depth(in.):
Corrugation Width(in.):
Condition Rating(1-5): 3
Approach Angle:
Sedimentation At Inlet: Yes
Inlet Substrate:
Outlet Substrate:
InletOutlet
Width(ft):3.5 3.5
Height(ft):2.5 3.5
Apron Length(ft):
Water Depth(ft):
Rustline Height(ft):
Substrate Depth(ft):
Backwatered?: Maybe
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient:
Max Slope:
Max Slope Length:
 

Comments: Culvert length estimated using aerial imagery. Fllod control card at outlet.

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: 8 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: At Site Visual Observation, Ground (8)  
Comments: 2 spawning adult pinks observed upstream of culvert, 6 carcasses observed downstream.

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