Fish Passage Site 20401359

Coordinates (dec. deg.): 61.56653°, -149.31348°
Legal Description: S017N001E17
Region: South Central
Road Name: Fireweed Road

Datum: NAD83
Quad Name / ITM: Anchorage C-7
AWC Stream #: 247-50-10260-2019-3038
Stream Name: Wasilla Creek tributary

Elevation:

Site Comments: 80 ft downstream (channel length) is inlet to culvert under Alaska Railroad grade.

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 MSB23-MS123

Project Supervisor: Michael Mazzacavallo, Alaska Department of Fish and Game — Anchorage, AK
Observers: Michael Mazzacavallo, Kat Leavitt, Amy LaBarre, Beth Evers

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Culvert sagging in middle
  2. Constriction ratio gray
  3. Constriction ratio red

Comments: None

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 85.82
Inlet Type: Flared Inlet
Outlet Type: Flared Inlet
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 0.0
Sedimentation At Inlet: No
Inlet Substrate: Organic
Outlet Substrate: Organic
InletOutlet
Width(ft):2.9 2.9
Height(ft):3.0 2.6
Apron Length(ft):5.0 5.0
Water Depth(ft):0.0 0.43
Rustline Height(ft):1.5
Substrate Depth(ft):0.0 0.3
Backwatered?: No
Baffles Present: No
Embedded?: No
Embedded Depth(ft): 0.0
Outfall Height: 0.56
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.15
Culvert Gradient: 1.00%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert sagging in middle
  2. Constriction ratio gray
  3. Constriction ratio red

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:OrganicOrganic
Subdominant:Silt/ClaySilt/Clay
Stream Slope(deg.):0.53
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 50.0 20.60
Upstream ordinary high water 60.0 15.10
Upstream ordinary high water 70.0 20.00
Upstream ordinary high water 100.0 21.70

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 101.25
D/S Thalweg 0.00 90.78
D/S Water Surface Elev 0.00 91.30
D/S Thalweg (Apron Bottom) 1.00 91.21
D/S Water Surface Elev (Apron WS) 1.00 91.86
D/S Water Surface Elev 6.00 91.86
Outlet Invert 6.00 91.43
Outlet Culvert Top 6.00 94.04
Inlet Culvert Top 91.82 94.90
U/S Water Surface Elev 91.82 92.22
Inlet Culvert Invert 91.82 91.84
U/S Thalweg (Apron Bottom) 96.82 91.90
U/S Water Surface Elev (Apron WS) 96.82 92.22
U/S Water Surface Elev 140.82 92.25
U/S Thalweg 140.82 91.62
U/S Thalweg 191.82 91.96
U/S Water Surface Elev 191.82 92.32

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