Fish Passage Site 20601532

Coordinates (dec. deg.): 61.11343°, -151.14975°
Legal Description: S012N011W24
Region: South Central
Road Name: Logging Road

Datum: NAD83
Quad Name / ITM: Tyonek A-4
AWC Stream #:
Stream Name: Chuitbuna Lake outlet

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-TY006

Observers: Cecil Rich, Michael Anderson, Joe Buckwalter

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: Datum = WGS84. gps accuracy = 28.0 ft. Palustrine wetland US of crossing - no channel. No outlet pool.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating: Gray
 
Length(ft): 34.7
Inlet Type: Projecting
Outlet Type:
Corrugation Depth(in.):
Corrugation Width(in.):
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):4.13 4.0
Height(ft):4.09 4.48
Apron Length(ft):
Water Depth(ft):0.6 0.35
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient: 1.35%
Max Slope:
Max Slope Length:

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClayGravel
Subdominant:Silt/ClayGravel
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 59.0 10.20
Downstream ordinary high water 82.0 7.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Water Surface Elev 0.00 82.0 91.25
D/S OHW Elev 0.00 82.0 91.27
D/S Thalweg 0.00 82.0 90.60
D/S Thalweg 23.00 59.0 90.71
D/S Water Surface Elev 23.00 59.0 91.27
D/S OHW Elev 23.00 59.0 92.06
Outlet Rustline Height 1 82.00 0.0 93.17
Outlet Culvert Top 1 82.00 0.0 95.52
Outlet Invert 1 82.00 0.0 91.40
Outlet Thalweg 1 82.00 0.0 91.69
Road Elev 99.00 96.00
Road Elev 99.00 96.25
Inlet Rustline Height 1 116.00 0.0 94.71
Inlet Culvert Invert 1 116.00 0.0 91.87
Inlet Culvert Top 1 116.00 0.0 95.96
Inlet Thalweg 1 116.00 0.0 92.35
U/S Thalweg 1 117.00 1.0 92.25
U/S Water Surface Elev 1 121.00 5.0 93.08
U/S OHW elevation 1 121.00 5.0 93.67
U/S Thalweg 1 121.00 5.0 91.56

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): 5
 
Gear Type: Minnow Trap, 1/4 in. Mesh (B) Trap Duration(h): 6

Fish Observations

Species: juvenile Dolly Varden Life History: Unknown
Total Fish Observed: 12 Fish Measured: 5 Fork Lengths (mm) Min: 74 Max: 108 Mean: 87
Collected/Observed by Gear Type: Upstream Minnow Trap, 1/4 in. Mesh (12)  
 
Species: stickleback-unspecified Life History: Resident
Total Fish Observed: 35 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Downstream Minnow Trap, 1/4 in. Mesh (1)  Upstream Minnow Trap, 1/4 in. Mesh (34)  
 
Species: juvenile coho salmon Life History: Anadromous
Total Fish Observed: 35 Fish Measured: 14 Fork Lengths (mm) Min: 65 Max: 132 Mean: 86
Collected/Observed by Gear Type: Downstream Minnow Trap, 1/4 in. Mesh (14)  Upstream Minnow Trap, 1/4 in. Mesh (21)  
 
Species: juvenile rainbow trout Life History: Resident
Total Fish Observed: 61 Fish Measured: 20 Fork Lengths (mm) Min: 71 Max: 118 Mean: 103
Collected/Observed by Gear Type: Downstream Minnow Trap, 1/4 in. Mesh (31)  Upstream Minnow Trap, 1/4 in. Mesh (30)  

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