Fish Passage Site 20501117

Coordinates (dec. deg.): 61.54028°, -149.95072°
Legal Description: S017N004W26
Region: South Central
Road Name: Private Drive off Lakes Boulev

Datum: NAD83
Quad Name / ITM: Anchorage C-8
AWC Stream #:
Stream Name:

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-MS102

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

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Culvert gradient red
  2. Compound gradient in pipe

Comments: Staff spotted and documented adult spawning salmon only downstream, not upstream. This could be due to the culvert gradient.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 30.05
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5): 4
Approach Angle: 0.0
Sedimentation At Inlet: No
Inlet Substrate: Gravel
Outlet Substrate: Sand
InletOutlet
Width(ft):2.0 2.0
Height(ft):2.0 2.0
Apron Length(ft):
Water Depth(ft):0.0 1.32
Rustline Height(ft):1.5
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Embedded Depth(ft): 0.0
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient: 3.00%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert gradient red
  2. Compound gradient in pipe

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:SandSand
Stream Slope(deg.):1.5
Stream Flow Stage:High

No stream width data available.

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 102.84
U/S Water Surface Elev 0.00 99.77
Inlet Culvert Top 50.00 101.23
Inlet Culvert Invert 50.00 99.21
U/S Water Surface Elev 50.00 99.74
Outlet Invert 80.05 99.15
D/S Water Surface Elev 80.05 99.15
Outlet Culvert Top 80.05 100.33
D/S Water Surface Elev 130.05 97.82

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