Fish Passage Site 20601553

Coordinates (dec. deg.): 61.03941°, -151.47293°
Legal Description: S011N012W18
Region: South Central
Road Name:

Datum: NAD83
Quad Name / ITM: Tyonek A-4
AWC Stream #:
Stream Name: Unnamed

Elevation:

Site Comments: Site is ~50 ft DS of site 026 on abandoned roadway.

Survey Date: Jun 19, 2002

Survey TYCS1-TY027

Observers: Cecil Rich, Michael Anderson, Joe Buckwalter

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: WGS84. 30.4 ft = gps accuracy. Site is ~50 ft DS of site 026 on abandoned roadway. Culvert B bearing = 162. Culvert A has no fill, = ~5% flow. DS distances (50,100-ft) measured from culvert A. Culvert B outlet is 10 ft US of A. B tailcrest = 5ft DS of B. Site scheuled to be removed by DNR.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Non-corrugated metal) Fish Passage Rating:
 
Length(ft):
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):1.6 1.55
Height(ft):1.61 1.69
Apron Length(ft):
Water Depth(ft):0.14 0.04
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type:
Constriction Ratio: 0.4
Culvert Gradient:
Max Slope:
Max Slope Length:
 

Comments: Culvert A has no fill, = ~5% flow.
  Culvert Observations:
  1. None of this type
ID: 2 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating:
 
Length(ft):
Inlet Type: Projecting
Outlet Type:
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.0
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):1.5 1.8
Height(ft):1.53 1.02
Apron Length(ft):
Water Depth(ft):0.3 0.9
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type:
Constriction Ratio: 0.4
Culvert Gradient:
Max Slope:
Max Slope Length:
 

Comments: Culvert B bearing = 162.
  Culvert Observations:
  1. None of this type

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:CobbleGravel
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 38.0 3.00
Downstream ordinary high water 75.0 4.00
Upstream ordinary high water 5.0 8.00
Upstream ordinary high water 14.3 7.80

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg 75.0 91.84
D/S Water Surface Elev 75.0 92.17
D/S OHW Elev 75.0 92.87
D/S Thalweg 38.0 94.29
D/S Water Surface Elev 38.0 94.64
D/S OHW Elev 38.0 95.08
D/S Thalweg (Culvert B = 0,2,5.80 (x,I,fs)) 3.8 95.50
Max Pool Depth 1 3.8 95.50
Outlet Thalweg 1 0.0 95.99
D/S Tailcrest or 1st Thalweg 96.11
OHW Left Bank (Culvert B = 3,2,4.72) 5.0 96.35
Outlet Invert 1 0.0 96.48
Max Pool Depth 2 0.0 96.61
Outlet Thalweg (max width OHW = 4.5 ft) 2 0.0 96.61
OHW Left Bank (Culvert B =3,2,4.46) 5.0 96.95
Outlet Rustline Height (moss line) 1 0.0 97.01
Inlet Thalweg 2 0.0 97.06
U/S Thalweg 1 1.0 97.42
Inlet Culvert Invert 2 0.0 97.54
Inlet Thalweg 1 0.0 97.56
Outlet Culvert Top (outlet crushed, 0.05 ft bl WEL) 2 0.0 97.63
U/S Thalweg 1 3.2 97.65
U/S Thalweg 2 1.0 97.82
U/S Thalweg 2 5.0 97.82
U/S Thalweg 1 5.0 97.85
Inlet Culvert Invert 1 0.0 98.01
U/S Thalweg 14.3 98.04
U/S Water Surface Elev 2 5.0 98.06
U/S Water Surface Elev 1 5.0 98.10
Inlet Rustline Height (moss line) 2 0.0 98.12
Outlet Culvert Top 1 0.0 98.17
U/S Water Surface Elev 14.3 98.37
U/S OHW elevation (OHW width @ 5=4.95) 2 1.0 98.40
U/S OHW elevation 1 1.0 98.47
U/S Headwater 14.3 99.03
Inlet Culvert Top 2 0.0 99.07
Inlet Culvert Top 1 0.0 99.62
Road Elev 100.80
Road Elev 101.24

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): 2
 
Gear Type: Minnow Trap, 1/4 in. Mesh (B) Trap Duration(h): 2

Fish Observations

Species: juvenile Dolly Varden Life History: Resident
Total Fish Observed: 20 Fish Measured: 10 Fork Lengths (mm) Min: 52 Max: 156 Mean: 107
Collected/Observed by Gear Type: Downstream Minnow Trap, 1/4 in. Mesh (4)  Upstream Minnow Trap, 1/4 in. Mesh (16)  

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