Fish Passage Site 10103432

Coordinates (dec. deg.): 60.56318°, -145.68347°
Legal Description: C015S003W13
Region: South Central
Road Name: Eyak Lake Road

Datum: NAD83
Quad Name / ITM: Cordova C-5
AWC Stream #:
Stream Name: Eyak Lake Tributary

Elevation:

Site Comments: None

Survey Date: Nov 11, 2014

Survey UPDATE-POW5

Project Supervisor: Gillian O'Doherty, ADFG
Observers: Mark Eisenman

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Outfall height red
  2. Culvert gradient red
  3. Constriction ratio red
  4. Inlet perch

Comments: Site survey completed by the CRWP.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 62.8
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.75
Condition Rating(1-5): 3
Approach Angle:
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):3.0 3.0
Height(ft):3.06 3.04
Apron Length(ft):
Water Depth(ft): 0.35
Rustline Height(ft):0.95
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 1.03
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.38
Culvert Gradient: 4.90%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Outfall height red
  2. Culvert gradient red
  3. Constriction ratio red
  4. Inlet perch

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleGravel
Subdominant:BoulderCobble
Stream Slope(deg.):7
Stream Flow Stage:Low
Stream Width Type Distance From
Crossing (ft)
Stream
Width (ft)
Upstream ordinary high water 5.20
Upstream ordinary high water 9.10
Upstream ordinary high water 9.70
Upstream ordinary high water 7.70

Elevations

Locator ID Culvert
Number
River
Distance (ft)1
Distance From
Crossing (ft)2
Relative
Elevation (ft)
Road Elev 22.51
D/S Thalweg (In Eyak Lake) 0.00 10.89
D/S Water Surface Elev 0.00 11.99
D/S Grade Ctrl (Thalweg) 24.80 12.38
D/S Water Surface Elev 24.80 12.82
D/S Tailcrest or 1st Thalweg 38.40 12.86
D/S Water Surface Elev 38.40 13.24
Max Pool Depth 45.20 11.37
Outlet Pool Water Elev 45.20 13.27
Outlet Invert 50.10 13.95
D/S Water Surface Elev 50.10 14.30
Outlet Culvert Top 50.10 16.99
Inlet Culvert Top 112.90 20.13
Inlet Culvert Invert 112.90 17.07
U/S Water Surface Elev 112.90 17.62
U/S Grade Ctrl (Thalweg) 116.30 18.38
U/S Water Surface Elev 116.30 18.68
U/S Grade Ctrl (Thalweg) 126.10 18.98
U/S Water Surface Elev 126.10 19.43
U/S Grade Ctrl (Thalweg) 146.00 22.43
U/S Water Surface Elev 146.00 22.63
U/S Grade Ctrl (Thalweg) 169.10 24.91
U/S Water Surface Elev 169.10 25.33
U/S Grade Ctrl (Thalweg) 189.30 24.91
U/S Water Surface Elev 189.30 25.28
U/S Grade Ctrl (Thalweg) 207.20 24.91
U/S Water Surface Elev 207.20 25.21

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 (A)
Comments: No fish caught in trap
 
Gear Type: Minnow Trap (B)
Comments: No fish caught in trap
 
Gear Type: Minnow Trap (B)

Fish Observations

Species: juvenile Dolly Varden Life History:
Total Fish Observed: 1 Fish Measured: 1 Fork Lengths (mm) Min: 85 Max: 85 Mean: 85
Collected/Observed by Gear Type:

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