Fish Passage Site 20401342

Coordinates (dec. deg.): 61.65704°, -149.21489°
Legal Description: S018N001E12
Region: South Central
Road Name: Bush Road

Datum: WGS84
Quad Name / ITM: Anchorage C-6
AWC Stream #: 247-50-10260-2019
Stream Name: Wasilla Creek tributary

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 MSCS1-WA036

Observers: Olof Jacobsson, Edward Weiss, Mike Roy

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Site Observations:

  1. Outfall height red
  2. Mechanical damage or joints parting

Comments: Updated site photos and fish capture data added from 9/28/16 site visit from Sampling Unmapped Streams in the MSB project. Wetland ponded on upper end. Apparent BLOCKAGE within culvert. Water depth at inlet significantly more than outlet. More than 10 ft inside from inlet. Some woody debris pulled out of inlet. Other sediment certain.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating: Red
 
Length(ft): 40.0
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 1
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: Sand
Outlet Substrate: Sand
InletOutlet
Width(ft):1.5 1.5
Height(ft):1.5 1.5
Apron Length(ft):
Water Depth(ft):1.4 0.15
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type: Free Fall In To Pool
Constriction Ratio:
Culvert Gradient: 0.20%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Woody Debris
  2. Sediment accumulation
  3. Outfall height red

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:SandSand
Subdominant:
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 50.0 3.00
Downstream ordinary high water 100.0 6.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg 88.99
D/S Thalweg 89.86
Outlet Culvert Top 1 93.34
Inlet Culvert Top 1 93.38
D/S Tailcrest or 1st Thalweg 0.00 2.2 90.77
D/S Thalweg 0.40 1.8 90.49
Outlet Thalweg 1 2.20 0.0 91.08
Outlet Invert 1 2.20 0.0 91.76
Road Elev 22.20 94.39
Road Elev 22.20 94.75
Inlet Culvert Invert 1 42.20 0.0 91.84
Inlet Thalweg 1 42.20 0.0 89.00
U/S Thalweg 54.20 12.0 91.20

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): 18
 
Gear Type: Minnow Trap (B) Trap Duration(h): 20
 
Gear Type: Minnow Trap (C) Trap Duration(h): 2.5833333
Comments: Trapped 9/28/16
 
Gear Type: Minnow Trap (D) Trap Duration(h): 2.5666666
Comments: Trapped 9/28/16

Fish Observations

Species: juvenile/adult stickleback-unspecified Life History: Resident
Total Fish Observed: 3 Fish Measured: 1 Fork Lengths (mm) Min: 30 Max: 30 Mean: 30
Collected/Observed by Gear Type: Downstream Minnow Trap (1)  Upstream Minnow Trap (2)  
 
Species: juvenile/adult sculpin-unspecified Life History: Resident
Total Fish Observed: 7 Fish Measured: 2 Fork Lengths (mm) Min: 90 Max: 96 Mean: 93
Collected/Observed by Gear Type: Downstream Minnow Trap (2)  Upstream Minnow Trap (1)  Downstream Minnow Trap (4)  
 
Species: threespine stickleback Life History: Resident
Total Fish Observed: 1 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Upstream Minnow Trap (1)  

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