Fish Passage Site 20401348

Coordinates (dec. deg.): 61.65525°, -149.20056°
Legal Description: S018N001E13
Region: South Central
Road Name: Falk Road

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

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-WA044

Observers: Edward Weiss, Olof Jacobsson, Joe Conner

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: None

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating:
 
Length(ft): 54.0
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: Cobble
InletOutlet
Width(ft):5.4 5.4
Height(ft):5.4 5.4
Apron Length(ft):
Water Depth(ft):1.4 1.2
Rustline Height(ft):
Substrate Depth(ft):0.8 1.2
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type:
Constriction Ratio: 0.55
Culvert Gradient: 1.80%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Mechanical damage or joints parting
  2. Culvert is poorly aligned
ID: 2 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating:
 
Length(ft): 54.0
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: Cobble
InletOutlet
Width(ft):5.4 5.4
Height(ft):5.4 5.4
Apron Length(ft):
Water Depth(ft):2.1 2.1
Rustline Height(ft):
Substrate Depth(ft):0.1 0.1
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type:
Constriction Ratio: 0.55
Culvert Gradient: 2.26%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Mechanical damage or joints parting

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:
Subdominant:
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 56.0 21.00
Downstream ordinary high water 96.0 21.00
Upstream ordinary high water 60.0 18.00
Upstream ordinary high water 124.0 21.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Outlet Culvert Top 1 92.26
Inlet Culvert Top 2 92.70
Outlet Culvert Top 2 92.77
Inlet Culvert Top 1 93.64
D/S Tailcrest or 1st Thalweg 88.36
D/S Thalweg 0.00 96.0 86.98
D/S Thalweg 40.00 56.0 86.47
Outlet Invert 2 96.00 0.0 87.26
Outlet Thalweg 2 96.00 0.0 87.45
Outlet Invert 1 96.00 0.0 88.00
Outlet Thalweg 1 96.00 0.0 88.00
Road Elev 123.00 94.69
Road Elev 123.00 95.68
Inlet Culvert Invert 2 150.00 0.0 88.48
Inlet Culvert Invert 1 150.00 0.0 88.97
Inlet Thalweg 1 151.00 1.0 89.37
Inlet Thalweg 2 151.00 1.0 88.64
U/S Thalweg 210.00 60.0 90.22
U/S Thalweg 274.00 124.0 90.89

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

No fish sampling occurred during this survey.

Fish Observations

No fish observations occurred during this survey.

Questions or comments about this report can be directed to dfg.dsf.webmaster@alaska.gov