Fish Passage Site 20400599

Coordinates (dec. deg.): 61.46902°, -148.86882°
Legal Description: S016N003E23
Region: South Central
Road Name: Knik River Road

Datum: NAD83
Quad Name / ITM: Anchorage B-5
AWC Stream #: 247-50-10200-2120-3006
Stream Name: Unnamed

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-

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. Inlet perch
  2. Constriction ratio gray
  3. Culvert gradient gray

Comments: Culvert #2 outlet outfall appears to be cascade over boulder. Inlets are perched for both culverts.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 121.65
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.625
Condition Rating(1-5): 4
Approach Angle:
Sedimentation At Inlet: No
Inlet Substrate: Gravel
Outlet Substrate: Sand
InletOutlet
Width(ft):3.8 4.1
Height(ft):4.0 3.8
Apron Length(ft):
Water Depth(ft): 1.11
Rustline Height(ft):0.8
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.57
Culvert Gradient: 5.75%
Max Slope:
Max Slope Length:
 

Comments: Inlet is perched

  Culvert Observations:
  1. Inlet perch
  2. Constriction ratio gray
  3. Culvert gradient red
ID: 2 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating:
 
Length(ft): 121.92
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.625
Condition Rating(1-5): 4
Approach Angle:
Sedimentation At Inlet: No
Inlet Substrate: Gravel
Outlet Substrate: Sand
InletOutlet
Width(ft):4.0 3.4
Height(ft):3.9 3.8
Apron Length(ft):
Water Depth(ft): 1.12
Rustline Height(ft):1.0
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 3.8
Outfall Type: Cascade Over Rip-Rap
Constriction Ratio: 0.57
Culvert Gradient: 5.56%
Max Slope:
Max Slope Length:
 

Comments: Inlet is perched. Outlet outfall appears to be cascade over boulder.

  Culvert Observations:
  1. Inlet perch
  2. Constriction ratio gray
  3. Culvert gradient gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleCobble
Subdominant:SandSand
Stream Slope(deg.):6.1
Stream Flow Stage:Medium

No stream width data available.

Elevations

No elevation data available.

Fish Sampling Efforts

No fish sampling occurred during this survey.

Fish Observations

No fish observations occurred during this survey.

Photos

No photos available.

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