Fish Passage Site 20501232

Coordinates (dec. deg.): 61.66150°, -149.46686°
Legal Description: S018N001W09
Region: South Central
Road Name: Sushana Road

Datum: WGS84
Quad Name / ITM: Anchorage C-7
AWC Stream #: 247-41-10100-2313
Stream Name: Coal Creek

Elevation:

Site Comments: None

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 MSB09-SUS01

Project Supervisor: Gillian O'Doherty, ADFG
Observers: Gillian O'Doherty, Ben Histand

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Outfall height red
  2. Culvert is poorly aligned
  3. Other, including vibrations, cavitation, etc.
  4. Constriction ratio gray

Comments: Road collapsing; pipe has sharp bend in middle, could not take length; ADULT BARRIER; OH measured directly with rod.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft):
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.3
Corrugation Width(in.): 2.5
Condition Rating(1-5): 1
Approach Angle:
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):6.2
Height(ft):5.65
Apron Length(ft):
Water Depth(ft):
Rustline Height(ft):0.7
Substrate Depth(ft):0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 5.2
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.72
Culvert Gradient:
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Outfall height red
  2. Culvert is poorly aligned
  3. Other, including vibrations, cavitation, etc.
  4. Constriction ratio gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:SandBoulder
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 8.50
Downstream ordinary high water 9.20
Downstream ordinary high water 8.00

Elevations

No elevation data available.

Fish Sampling Efforts

Gear Type: Minnow Trap (A) Trap Duration(h): 0.75
Comments: no fish caught; 70ft u/s; culvert is an adult barrier
 
Gear Type: Minnow Trap (B) Trap Duration(h): 0.75
Comments: 100ft d/s
 
Gear Type: Minnow Trap (C) Trap Duration(h): 0.083
Comments: 15ft d/s, off outlet pool

Fish Observations

Species: juvenile coho salmon Life History: Anadromous
Total Fish Observed: 3 Fish Measured: 2 Fork Lengths (mm) Min: 48 Max: 64 Mean: 56
Collected/Observed by Gear Type: Downstream Minnow Trap (2)  Downstream Minnow Trap (1)  

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