Fish Passage Site 30103614

Coordinates (dec. deg.): 51.91351°, -176.63782°
Legal Description: S095S195W26
Region: Southwest
Road Name: Old Military Road

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

Elevation:

Site Comments: None

Survey Date: Sep 16, 2017

Survey ADAK17-ADK04

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. C1 is blocked at inlet and not taking any flow. Lots of fish observed upstream in deep pools. Well defined E type channel, deep but narrow. Coho electrofished upstream. Anadromy likely extends much farther upstream. This creek has been nominated to the AWC.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 60.0
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.):
Corrugation Width(in.):
Condition Rating(1-5): 3
Approach Angle:
Sedimentation At Inlet: Yes
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?: No
Baffles Present: No
Embedded?: No
Outfall Height: 1.0
Outfall Type: Free Fall In To Pool
Constriction Ratio:
Culvert Gradient:
Max Slope:
Max Slope Length:
 

Comments: Outfall over 1 foot. Deep outlet pool. This culvert is blocked at the inlet from a large vegitated sediment wedge.
  Culvert Observations:
  1. Outfall height red
ID: 2 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 60.0
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.):
Corrugation Width(in.):
Condition Rating(1-5): 3
Approach Angle:
Sedimentation At Inlet: Yes
Inlet Substrate:
Outlet Substrate: None
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): 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 1.0
Outfall Type: Free Fall In To Pool
Constriction Ratio:
Culvert Gradient:
Max Slope:
Max Slope Length:
 

Comments: Culvert taking all flow from Jean Creek, may create a constiriction issue at higher flows. Culvert length estimated from aerial imagery, outfall over 1 foot.
  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: Smith-Root LR-24 (A)
 
Gear Type: Visual Observation, Ground (B)

Fish Observations

Species: juvenile coho salmon Life History: Anadromous
Total Fish Observed: 3 Fish Measured: 3 Fork Lengths (mm) Min: 42 Max: 48 Mean: 45
Collected/Observed by Gear Type: Upstream Smith-Root LR-24 (3)  
Comments: 100s of fish observed upstream in deep pools and runs.
 
Species: juvenile/adult general fish observation, no species information Life History: Unknown
Total Fish Observed: 100 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Upstream Visual Observation, Ground (100)  

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