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 MSB09-MUR02

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

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: No

Step Pools: Yes
Construction Year: 2008


Site Observations:

  1. None of this type

Comments: Post-replacement survey of MSCS1WA039; step pools with jumps <4", fry obs upstream.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Green
 
Length(ft): 50.7
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 4
Approach Angle: 14.0
Sedimentation At Inlet: No
Inlet Substrate: Gravel
Outlet Substrate: Gravel
InletOutlet
Width(ft):7.0 7.0
Height(ft):4.8 4.7
Apron Length(ft):0.0 0.0
Water Depth(ft): 0.31
Rustline Height(ft):
Substrate Depth(ft):2.3 2.3
Backwatered?: No
Baffles Present: No
Embedded?: Yes
Embedded Depth(ft): 2.3
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 1.0
Culvert Gradient: 2.07%
Max Slope:
Max Slope Length:
 

Comments: Post-replacement survey of MSCS1WA039;fry obs upstream; upstream grade is 0.5%.
  Culvert Observations:
  1. None of this type

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:SandGravel
Subdominant:Silt/ClaySand
Stream Slope(deg.):0.5
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 54.0 6.00
Upstream ordinary high water 89.0 7.00
Upstream ordinary high water 128.0 8.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Water Surface Elev (water surface used for stream grad) 1 0.00 94.64
D/S Grade Ctrl (Thalweg) (grade pt at pool below riffle) 1 92.00 93.63
D/S Water Surface Elev 1 92.00 95.02
D/S Water Surface Elev (water surface used for stream grad) 1 112.00 95.19
D/S Water Surface Elev 1 140.00 95.42
D/S Grade Ctrl (Thalweg) (grade pt at riffle) 1 140.00 94.95
Outlet Culvert Top 1 156.00 100.00
Outlet Invert (invert on substrate) 1 156.00 95.45
D/S Water Surface Elev (outlet water surface) 1 156.00 95.93
Road Elev 1 181.00 102.31
Inlet Culvert Top 1 206.80 101.05
Inlet Culvert Invert (invert on substrate) 1 206.80 96.21
U/S Water Surface Elev (inlet water surface) 1 206.80 96.92
U/S Grade Ctrl (Thalweg) (top of cobble riffle) 1 226.80 97.17
U/S Water Surface Elev 1 226.80 97.56
U/S Water Surface Elev 1 246.80 97.87
U/S Grade Ctrl (Thalweg) (resting pool) 1 246.80 96.75

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 (A)
Comments: Juvenile salmonids observed upstream from culvert.

Fish Observations

No fish observations occurred during this survey.

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