Fish Passage Site 20401343

Coordinates (dec. deg.): 61.71077°, -149.11888°
Legal Description: S019N002E29
Region: South Central
Road Name: Murphy Road

Datum: NAD83
Quad Name / ITM: Anchorage C-6
AWC Stream #: 247-50-10260-2019-3120
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-WA039

Observers: Edward Weiss, Olof Jacobsson, Joe Conner

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Site Observations:

  1. Culvert gradient red

Comments: None

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 80.5
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 3
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: Gravel
Outlet Substrate: Sand
InletOutlet
Width(ft):3.0 3.0
Height(ft):3.0 3.0
Apron Length(ft):
Water Depth(ft):0.75 0.85
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient: 3.30%
Max Slope:
Max Slope Length:

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelSand
Subdominant:
Stream Slope(deg.):0.5
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 47.0 8.00
Downstream ordinary high water 95.0 7.50
Upstream ordinary high water 32.0 12.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Misc. (thalweg of top of beaver dam upst) 0.00 91.28
Misc. (depth of beaver pool) 3.00 89.46
U/S OHW elevation (bankfull OHW mark elevation) 16.00 91.12
U/S Thalweg (upst thalweg) 16.00 89.41
U/S Thalweg (upst thalweg) 46.00 88.75
U/S Thalweg (culvert inlet thalweg) 48.00 88.83
Inlet Culvert Invert (invert of inlet) 48.00 89.19
Inlet Road Edge (edge of road near inlet) 48.00 94.42
Inlet Culvert Top 48.00 92.17
Outlet Road Edge (edge of road near outlet) 128.50 94.35
Outlet Culvert Top 128.50 89.53
D/S Thalweg (culvert outlet thalweg) 128.50 86.49
Outlet Invert (invert of outlet) 128.50 86.53
Max Pool Depth (culvert thalweg outlet pool depth) 133.50 86.12
D/S Thalweg (dwst thalweg) 175.50 86.13
D/S OHW Elev (dwst OHW mark elevation) 175.50 88.49
D/S Thalweg (dwst thalweg) 223.50 86.15
D/S OHW Elev (dwst OHW mark elevation) 223.50 88.12

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
Comments: Trapsite upstream of beaver dam.
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1
Comments: Trap site 50' downstream of beaver dam. Small salmonid observed in culvert outlet

Fish Observations

Species: juvenile/adult Dolly Varden Life History: Unknown
Total Fish Observed: 4 Fish Measured: 2 Fork Lengths (mm) Min: 95 Max: 105 Mean: 100
Collected/Observed by Gear Type: Upstream Minnow Trap (4)  
 
Species: juvenile coho salmon Life History: Anadromous
Total Fish Observed: 10 Fish Measured: 5 Fork Lengths (mm) Min: 83 Max: 110 Mean: 92
Collected/Observed by Gear Type: Upstream Minnow Trap (10)  
 
Species: no fish collected or observed Life History: Not Applicable
Total Fish Observed: Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Downstream Minnow Trap ()  

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