Fish Passage Site 20401356

Coordinates (dec. deg.): 61.57644°, -149.28456°
Legal Description: S017N001E09
Region: South Central
Road Name: Lower Road

Datum: NAD83
Quad Name / ITM: Anchorage C-7
AWC Stream #: 247-50-10260-2019
Stream Name: Wasilla Creek

Elevation:

Site Comments: Lower Road - near Hyer Road

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-WA053

Observers: Olof Jacobsson, Edward Weiss

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: None

Culvert Measurements

ID: 1 Structure Type: Open-bottom arch (Strutural Metal Plate) Fish Passage Rating: Gray
 
Length(ft): 30.0
Inlet Type: Projecting
Outlet Type:
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 6.0
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: Sand
Outlet Substrate: Gravel
InletOutlet
Width(ft):11.5 11.6
Height(ft):5.6 5.5
Apron Length(ft):
Water Depth(ft):1.5 1.8
Rustline Height(ft):
Substrate Depth(ft):
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type: Cascade Over Rip-Rap
Constriction Ratio: 0.73
Culvert Gradient:
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Cut-slope slumping or sliding into culvert (single event)

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:SandGravel
Subdominant:
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 2.0 13.10
Downstream ordinary high water 27.0 12.00
Downstream ordinary high water 98.0 15.00
Upstream ordinary high water 50.0 15.00
Upstream ordinary high water 80.0 16.50

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Outlet Culvert Top 1 93.78
Inlet Culvert Top 1 93.85
D/S Thalweg 0.00 98.0 87.18
D/S Thalweg 71.00 27.0 87.35
D/S Thalweg (Base of cascade) 85.00 13.0 87.97
OHW Left Bank 96.00 2.0 88.56
D/S Tailcrest or 1st Thalweg 96.00 2.0 89.19
Outlet Thalweg 1 98.00 0.0 88.16
Road Elev 113.00 94.74
Road Elev 113.00 94.76
Inlet Thalweg 1 128.00 0.0 88.30
U/S Thalweg 178.00 50.0 88.12
U/S Thalweg 208.00 80.0 88.38

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: Visual Observation, Ground (C)

Fish Observations

Species: general fish observation, no species information Life History: Not Recorded
Total Fish Observed: 2 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Upstream Visual Observation, Ground (2)  
Comments: 2 adult Coho (?) or sockeye (?) observation

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