Fish Passage Site 20501423

Coordinates (dec. deg.): 62.30997°, -150.10437°
Legal Description: S026N005W25
Region: South Central
Road Name: Talkeetna Spur Road

Datum: NAD83
Quad Name / ITM: Talkeetna B-1
AWC Stream #:
Stream Name: Twister 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-TSR03

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

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Site Observations:

  1. Beaver Activity

Comments: Resurvey of PRK041A060; CR not considered because of wetland upstream.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Green
 
Length(ft): 106.8
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 4
Approach Angle: 7.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):3.0 2.9
Height(ft):2.8 2.9
Apron Length(ft):
Water Depth(ft): 1.51
Rustline Height(ft):2.3
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.32
Culvert Gradient: 0.46%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Beaver Activity
ID: 2 Structure Type:N/A Fish Passage Rating:
 
Length(ft): 85.0
Inlet Type:
Outlet Type:
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet: No
Inlet Substrate:
Outlet Substrate:
InletOutlet
Width(ft):2.9
Height(ft):
Apron Length(ft):
Water Depth(ft):
Rustline Height(ft):
Substrate Depth(ft):
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type:
Constriction Ratio:
Culvert Gradient: 1.61%
Max Slope:
Max Slope Length:
 

Comments: Overflow. No flow through pipe 2. Corresponds to "side channel A" in survey notes. Culvert blocked with grate and debris.
ID: 3 Structure Type:N/A Fish Passage Rating:
 
Length(ft): 85.0
Inlet Type:
Outlet Type:
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet: No
Inlet Substrate:
Outlet Substrate:
InletOutlet
Width(ft):3.0
Height(ft):
Apron Length(ft):
Water Depth(ft):
Rustline Height(ft):
Substrate Depth(ft):
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type:
Constriction Ratio:
Culvert Gradient: 2.60%
Max Slope:
Max Slope Length:
 

Comments: Overflow. No flow through pipe 3. Corresponds to "side channel B" in survey notes. Culvert blocked with grate and debirs.
  Culvert Observations:
  1. Beaver Activity

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClaySilt/Clay
Subdominant:GravelGravel
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 43.0 6.00
Downstream ordinary high water 108.0 11.00
Downstream ordinary high water 166.0 10.50

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
U/S Headwater 1 95.31
U/S Headwater (pool at inlet) 2 95.35
(Top of outlet) 3 96.04
(Top of outlet) 2 96.56
(Top of inlet) 2 97.93
(Top of inlet) 3 98.25
Outlet Pool Water Elev (wd = 1.51 at inv) 1 95.18
Inlet Road Edge 2 100.87
D/S Grade Ctrl (Thalweg) 1 0.00 55.0 93.98
D/S Water Surface Elev (ws @ GP) 1 0.00 55.0 94.77
D/S Tailcrest or 1st Thalweg (no water flow) 2 48.00 7.0 94.13
D/S Tailcrest or 1st Thalweg (soft substrate) 1 49.00 6.0 94.07
D/S Water Surface Elev (ws @ TWC) 1 49.00 6.0 95.18
D/S Thalweg 1 50.00 5.0 93.95
Outlet Invert 1 55.00 0.0 93.67
Outlet Invert (on CG) 2 55.00 0.0 93.85
Road Elev 1 101.00 101.65
Road Elev 3 101.00 99.83
Inlet Culvert Invert 1 147.00 0.0 94.16

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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