Fish Passage Site 20501409

Coordinates (dec. deg.): 62.31550°, -150.21874°
Legal Description: S026N005W28
Region: South Central
Road Name: Susitna River Road

Datum: NAD83
Quad Name / ITM: Talkeetna B-1
AWC Stream #: 247-41-10200-2341
Stream Name: Trapper Creek

Elevation:

Site Comments: Susitna River watershed

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 PRK09-SRR03

Project Supervisor: Gillian O'Doherty, ADFG
Observers: Heidi Zimmer, Ben Histand

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Site Observations:

  1. Constriction ratio red
  2. Culvert gradient gray
  3. Beaver Activity
  4. Woody Debris

Comments: Resurvey of PRK041A046; Red due to CR, but prob only partial barrier.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 60.1
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 13.0
Sedimentation At Inlet: No
Inlet Substrate: Cobble
Outlet Substrate: Gravel
InletOutlet
Width(ft):7.8 7.9
Height(ft):5.5 6.4
Apron Length(ft):
Water Depth(ft): 3.34
Rustline Height(ft):4.5
Substrate Depth(ft):0.8 0.4
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.49
Culvert Gradient: 1.03%
Max Slope:
Max Slope Length:
 

Comments: Culvert plugged with woody debris.
  Culvert Observations:
  1. Constriction ratio red
  2. Culvert gradient gray
  3. Beaver Activity
  4. Woody Debris
ID: 2 Structure Type: Circular pipe (Structural steel plate) Fish Passage Rating: Green
 
Length(ft): 59.9
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 6.0
Condition Rating(1-5): 2
Approach Angle: 13.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: Gravel
InletOutlet
Width(ft):9.0 9.4
Height(ft):6.2 6.0
Apron Length(ft):
Water Depth(ft): 1.97
Rustline Height(ft):3.2
Substrate Depth(ft):0.0 0.2
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.49
Culvert Gradient: 0.45%
Max Slope:
Max Slope Length:
 

Comments: Resurvey of 1A046; Red due to CR, but prob only partial barrier - main pipe (pipe 2) is green otherwise
  Culvert Observations:
  1. Constriction ratio red
  2. Beaver Activity
ID: 3 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 60.4
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 13.0
Sedimentation At Inlet: No
Inlet Substrate: Cobble
Outlet Substrate: None
InletOutlet
Width(ft):7.9 7.9
Height(ft):6.2 6.9
Apron Length(ft):
Water Depth(ft): 3.82
Rustline Height(ft):5.3
Substrate Depth(ft):0.7 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.49
Culvert Gradient: 1.16%
Max Slope:
Max Slope Length:
 

Comments: Resurvey of 1A046; Red due to CR, but prob only partial barrier. Culvert plugged with woody debris.
  Culvert Observations:
  1. Constriction ratio red
  2. Culvert gradient gray
  3. Beaver Activity
  4. Woody Debris

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClaySilt/Clay
Subdominant:
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 110.0 24.50
Upstream ordinary high water 150.0 31.00
Upstream ordinary high water 200.0 32.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Outlet Pool Water Elev 2 95.32
Outlet Pool Water Elev 1 95.34
Outlet Pool Water Elev 3 95.34
U/S Headwater 2 95.76
U/S Headwater 1 95.87
U/S Headwater 3 95.87
D/S Water Surface Elev (ws D/S - no TWC and channel is too deep to wade) 0.00 120.0 95.32
Outlet Invert 2 120.00 0.0 93.35
Outlet Invert 3 120.00 0.0 91.52
Outlet Invert 1 120.00 0.0 92.00
Road Elev 150.00 102.15
Inlet Culvert Invert 3 180.00 0.0 92.22
Inlet Culvert Invert 1 180.00 0.0 92.62
U/S Thalweg 2 180.00 0.0 92.81
Inlet Culvert Invert 2 180.00 0.0 93.62

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.

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