Fish Passage Site 20501136

Coordinates (dec. deg.): 61.51417°, -150.08558°
Legal Description: S017N005W36
Region: South Central
Road Name: Papoose Twins Road

Datum: NAD83
Quad Name / ITM: Tyonek C-1
AWC Stream #:
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-MS104

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

Comments: None

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 48.66
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: Gravel
InletOutlet
Width(ft):4.2 3.9
Height(ft):3.0 2.75
Apron Length(ft):
Water Depth(ft):0.0 0.85
Rustline Height(ft):1.4
Substrate Depth(ft):0.5 0.6
Backwatered?: No
Baffles Present: No
Embedded?: Yes
Embedded Depth(ft): 1.4
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.52
Culvert Gradient: 2.03%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert gradient gray
ID: 2 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 48.9
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5): 5
Approach Angle: 0.0
Sedimentation At Inlet: No
Inlet Substrate: Gravel
Outlet Substrate: Gravel
InletOutlet
Width(ft):2.9 3.1
Height(ft):2.85 2.9
Apron Length(ft):
Water Depth(ft):0.0 0.0
Rustline Height(ft):0.0
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: Overflow Pipe
Constriction Ratio:
Culvert Gradient: 0.32%
Max Slope:
Max Slope Length:
 

Comments: Culvert # 2 is a drainage pipe, currently no flow through them. There is also no rustline for #2.
  Culvert Observations:
  1. Culvert gradient red
ID: 3 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 49.0
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5): 5
Approach Angle: 0.0
Sedimentation At Inlet: No
Inlet Substrate: Gravel
Outlet Substrate: Gravel
InletOutlet
Width(ft):3.1 3.1
Height(ft):2.9 3.0
Apron Length(ft):
Water Depth(ft):0.0 0.0
Rustline Height(ft):0.0
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present:
Embedded?: No
Embedded Depth(ft): 0.0
Outfall Height: 0.0
Outfall Type: Overflow Pipe
Constriction Ratio:
Culvert Gradient: 1.08%
Max Slope:
Max Slope Length:
 

Comments: Culvert #3 is a drainage pipe, currently no flow through it. There is no rust line.
  Culvert Observations:
  1. Culvert gradient red

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:SandSilt/Clay
Stream Slope(deg.):0.67
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 30.0 6.20
Upstream ordinary high water 59.0 8.60
Upstream ordinary high water 79.0 7.70
Upstream ordinary high water 107.0 9.70

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Outlet Invert 2 94.42
Inlet Culvert Invert 2 94.68
Outlet Invert 3 95.53
Outlet Culvert Top 2 97.41
Inlet Culvert Top 2 97.57
Outlet Culvert Top 3 98.59
Inlet Culvert Top 3 99.12
Road Elev 99.63
Inlet Culvert Invert 3 96.15
D/S Thalweg 0.00 92.10
D/S Water Surface Elev 0.00 93.30
D/S Water Surface Elev 60.00 93.54
D/S Thalweg 60.00 92.66
Outlet Invert 1 105.00 93.01
Outlet Culvert Top 1 105.00 95.57
D/S Water Surface Elev 1 105.00 93.86
Inlet Culvert Invert 1 153.66 93.55
Inlet Culvert Top 1 153.66 96.56
U/S Water Surface Elev 1 153.66 94.17
U/S Thalweg 206.66 93.64
U/S Water Surface Elev 206.66 94.88
U/S Water Surface Elev 234.66 95.04
U/S Thalweg 234.66 93.26
U/S Water Surface Elev 262.66 95.06
U/S Thalweg 262.66 93.94

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