Fish Passage Site 20601535

Coordinates (dec. deg.): 61.06654°, -151.32612°
Legal Description: S011N012W01
Region: South Central
Road Name: Tyonek Timber Road

Datum: NAD83
Quad Name / ITM: Tyonek A-4
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 TYCS1-TY009

Observers: Cecil Rich, Michael Anderson, Joe Buckwalter

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: Datum = WGS84. outlet perched, non-corrugated pipe

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Non-corrugated metal) Fish Passage Rating:
 
Length(ft): 31.9
Inlet Type: Projecting
Outlet Type:
Corrugation Depth(in.): 0.0
Corrugation Width(in.): 0.0
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):1.6 1.6
Height(ft):1.71 1.52
Apron Length(ft):
Water Depth(ft):4.75 2.75
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: 0.4
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.43
Culvert Gradient: 0.53%
Max Slope:
Max Slope Length:
 

Comments: Outfall estimated.
  Culvert Observations:
  1. None of this type

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClayGravel
Subdominant:NoneGravel
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 4.5 7.70
Downstream ordinary high water 45.0 5.92
Downstream ordinary high water 131.0 4.00
Upstream ordinary high water 88.0 3.50
Upstream ordinary high water 116.0 4.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S OHW Elev 0.00 131.0 89.87
D/S Water Surface Elev 0.00 131.0 90.37
D/S Thalweg 0.00 131.0 90.67
D/S OHW Elev 86.00 45.0 91.12
D/S Water Surface Elev 86.00 45.0 91.56
D/S Thalweg 86.00 45.0 91.87
D/S Tailcrest or 1st Thalweg 126.50 4.5 92.35
OHW Left Bank 129.00 2.0 92.69
D/S Thalweg 129.10 1.9 92.12
Max Pool Depth 1 129.10 1.9 92.12
Outlet Invert 1 131.00 0.0 92.85
Outlet Rustline Height 1 131.00 0.0 92.39
Outlet Thalweg 1 131.00 0.0 92.39
Outlet Culvert Top 1 131.00 0.0 94.37
Road Elev 146.50 94.75
Road Elev 146.50 95.08
Inlet Culvert Top 1 162.00 0.0 94.73
Inlet Culvert Invert 1 162.00 0.0 93.02
Inlet Thalweg 1 162.00 0.0 92.88
U/S Thalweg 1 163.00 1.0 92.90
U/S Thalweg 1 165.40 3.4 92.83
U/S Water Surface Elev 1 167.00 5.0 93.44
U/S OHW elevation 1 167.00 5.0 93.65
U/S Thalweg 1 167.00 5.0 92.71
U/S Thalweg 250.00 88.0 92.46
U/S Headwater 250.00 88.0 93.79
U/S Water Surface Elev 250.00 88.0 93.58

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

Gear Type: Minnow Trap, 1/4 in. Mesh (A) Trap Duration(h): 0.75
 
Gear Type: Minnow Trap, 1/4 in. Mesh (B) Trap Duration(h): 0.75

Fish Observations

Species: sculpin-unspecified Life History: Resident
Total Fish Observed: 1 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Downstream Minnow Trap, 1/4 in. Mesh (1)  
 
Species: no fish collected or observed Life History: Not Applicable
Total Fish Observed: 0 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Upstream Minnow Trap, 1/4 in. Mesh (0)  

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