Fish Passage Site 20401191

Coordinates (dec. deg.): 61.43481°, -148.78177°
Legal Description: S016N004E32
Region: South Central
Road Name: Knik River Road

Datum: WGS84
Quad Name / ITM: Anchorage B-5
AWC Stream #:
Stream Name: Friday 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 MSB23-MS001

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

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: Yes
Construction Year:


Site Observations:

  1. Culvert sagging in middle
  2. Culvert gradient red

Comments: Creek runs down hillside then into ditch along roadway

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 50.89
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5): 4
Approach Angle: 90.0
Sedimentation At Inlet: No
Inlet Substrate: Gravel
Outlet Substrate: Boulder
InletOutlet
Width(ft):3.9 4.0
Height(ft):4.1 4.0
Apron Length(ft):
Water Depth(ft):0.0 0.6
Rustline Height(ft):0.62
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Embedded Depth(ft): 0.0
Outfall Height:
Outfall Type: At Stream Grade
Constriction Ratio: 0.95
Culvert Gradient: 9.90%
Max Slope:
Max Slope Length:
 

Comments: Top of pipe is sagging, bottom is straight.
  Culvert Observations:
  1. Culvert sagging in middle
  2. Culvert gradient red

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:Boulder
Stream Slope(deg.):16.7
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 19.0 5.10
Downstream ordinary high water 32.0 3.40
Downstream ordinary high water 57.0 3.70

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 110.08
D/S Thalweg 10.00 84.84
D/S Water Surface Elev 10.00 85.02
D/S Thalweg 40.00 89.63
D/S Water Surface Elev 40.00 89.84
D/S Thalweg 64.00 93.40
D/S Water Surface Elev 64.00 93.64
D/S Thalweg 88.00 96.98
D/S Water Surface Elev 88.00 97.16
D/S Water Surface Elev 94.00 98.61
D/S Thalweg 94.00 99.16
Outlet Invert 100.00 99.40
D/S Water Surface Elev 100.00 100.02
Outlet Culvert Top 100.00 103.34
Inlet Culvert Invert 150.89 104.33
U/S Water Surface Elev 150.89 104.59
Inlet Culvert Top 150.89 108.36

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