Fish Passage Site 20403788

Coordinates (dec. deg.): 61.63025°, -149.32028°
Legal Description: S018N001E20
Region: South Central
Road Name: Cedarwood Drive

Datum: NAD83
Quad Name / ITM: Anchorage C-7
AWC Stream #:
Stream Name: Unnamed

Elevation:

Site Comments: Unnamed tributary to Upper Dry Lake

Multiple surveys have been conducted at this site — click on the drop down
arrow to the right of the survey date below to choose a different report for this site.

Survey UPDATE-CWD01

Project Supervisor: Gillian O'Doherty, ADFG
Observers: Mark Eisenman

Overall Fish Passage Rating: Black

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Comments: New culvert installed in 2017 for the Cedarwood Drive extension. No fish caught but one 90-100mm salmonid was observed at outlet. Upstream and downstream are fairly flat and shallow with sand/silt bottom. Moose bones discarded in upstream channel. Site visited on 8-17-18 for photos and baseline measurements, site still need full assessment for rating. Does not appear to be a barrier from visual observations.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Black
 
Length(ft): 80.0
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.75
Condition Rating(1-5): 5
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: Gravel
Outlet Substrate: Gravel
InletOutlet
Width(ft):5.0 5.0
Height(ft):3.2 3.5
Apron Length(ft):
Water Depth(ft):
Rustline Height(ft):
Substrate Depth(ft):1.8 1.5
Backwatered?: No
Baffles Present: No
Embedded?: Yes
Embedded Depth(ft): 1.8
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient:
Max Slope:
Max Slope Length:
 

Comments: Permit states that installed slope should be about 2.1%. Small riffle at inlet and small rock wier at outlet. Cuvlert is partially backwatered about 3/4 of it's length.

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:SandSand
Subdominant:GravelGravel
Stream Slope(deg.):
Stream Flow Stage:Medium

No stream width data available.

Elevations

No elevation data available.

Fish Sampling Efforts

Gear Type: Minnow Trap (A) Trap Duration(h): 8.0
Comments: Trap set about 50 feet upstream
 
Gear Type: Minnow Trap (B) Trap Duration(h): 8.0
Comments: Trap set about 30 feet downstream.
 
Gear Type: Visual Observation, Ground (C)
 
Gear Type: Smith-Root LR-24 (D) Trap Duration(h): 0
 
Gear Type: Smith-Root LR-24 (E) Trap Duration(h): 0

Fish Observations

Species: juvenile general fish observation, no species information Life History: Unknown
Total Fish Observed: 1 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Downstream Visual Observation, Ground (1)  
Comments: Unidentified salmonid observed at culvert outlet.
 
Species: juvenile Dolly Varden Life History: Unknown
Total Fish Observed: 6 Fish Measured: 6 Fork Lengths (mm) Min: 39 Max: 82 Mean: 50
Collected/Observed by Gear Type: Upstream Smith-Root LR-24 (3)  Downstream Smith-Root LR-24 (3)  
 
Species: juvenile/adult Dolly Varden Life History: Unknown
Total Fish Observed: 2 Fish Measured: 2 Fork Lengths (mm) Min: 170 Max: 180 Mean: 175
Collected/Observed by Gear Type: Upstream Smith-Root LR-24 (1)  Downstream Smith-Root LR-24 (1)  

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