Fish Passage Site 20401271

Coordinates (dec. deg.): 61.62338°, -149.32395°
Legal Description: S018N001E29
Region: South Central
Road Name: North Charley Drive

Datum: NAD83
Quad Name / ITM: Anchorage C-7
AWC Stream #: 247-50-10300
Stream Name: Anderson Lake outlet

Elevation:

Site Comments: Culvert 200' below Anderson Lake outlet. Old ID CT114.

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 MSCS1-CT114

Observers: Edward Weiss, Doug Hill, Joe Conner

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Site Observations:

  1. Culvert gradient red

Comments: Water flowing through culver and downstream section - this section often ephemeral, fish present; Lake approx. 200' upstream

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating: Red
 
Length(ft): 88.0
Inlet Type: Projecting
Outlet Type:
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: Gravel
Outlet Substrate: Gravel
InletOutlet
Width(ft):4.0 4.0
Height(ft):4.0 4.0
Apron Length(ft):
Water Depth(ft):0.6 0.6
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type:
Constriction Ratio:
Culvert Gradient: 2.62%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert gradient red

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 50.0 16.00
Downstream ordinary high water 100.0 10.50
Upstream ordinary high water 14.0 7.00
Upstream ordinary high water 100.0 9.30

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg 81.28
D/S Thalweg 82.03
Outlet Culvert Top 1 85.90
U/S Thalweg 86.82
Inlet Culvert Top 1 88.47
Outlet Invert 1 0.00 0.0 82.25
Outlet Thalweg 1 0.00 0.0 82.25
Road Elev 44.00 97.00
Road Elev 44.00 98.07
Inlet Culvert Invert 1 88.00 0.0 84.56
Inlet Thalweg 1 88.00 0.0 84.56
U/S Thalweg 102.00 14.0 85.58

Notes:

  1. River distance is measured continuously throughout the survey reach along the thalweg of the stream.
  2. Measured from each end of the crossing along the thalweg of the stream.

Fish Sampling Efforts

Gear Type: Minnow Trap (A) Trap Duration(h): 1
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1

Fish Observations

Species: juvenile/adult Dolly Varden Life History: Unknown
Total Fish Observed: 2 Fish Measured: 1 Fork Lengths (mm) Min: 90 Max: 90 Mean: 90
Collected/Observed by Gear Type: Downstream Minnow Trap (2)  
 
Species: juvenile/adult stickleback-unspecified Life History: Resident
Total Fish Observed: 17 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Downstream Minnow Trap (12)  Upstream Minnow Trap (5)  
 
Species: juvenile coho salmon Life History: Anadromous
Total Fish Observed: 28 Fish Measured: 14 Fork Lengths (mm) Min: 59 Max: 88 Mean: 74
Collected/Observed by Gear Type: Downstream Minnow Trap (14)  Upstream Minnow Trap (14)  
 
Species: juvenile rainbow trout Life History: Resident
Total Fish Observed: 16 Fish Measured: 8 Fork Lengths (mm) Min: 50 Max: 86 Mean: 71
Collected/Observed by Gear Type: Upstream Minnow Trap (16)  

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