Fish Passage Site 20203433

Coordinates (dec. deg.): 60.53981°, -145.75476°
Legal Description: C015S003W28
Region: South Central
Road Name: Copper River Highway

Datum: NAD83
Quad Name / ITM: Cordova C-5
AWC Stream #:
Stream Name: Odiak Pond outlet

Elevation:

Site Comments: None

Survey Date: Nov 01, 2014

Survey UPDATE-COPA

Project Supervisor: Gillian O'Doherty, ADFG
Observers:

Overall Fish Passage Rating: Gray

Tidal: Yes
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Outfall height red
  2. Compound gradient in pipe
  3. Mechanical damage or joints parting
  4. Structural Problem

Comments: Survey complete by the CRWP. Adult and juvenile Coho are numerous in the pond and upstream creeks. Dolly Varden and cutthroat trout have also been observed. Outfalls have been calculated at low tide. Three streams converge upstream to flow though these culverts.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 165.5
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.875
Condition Rating(1-5): 3
Approach Angle:
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):4.95 4.95
Height(ft):5.04 5.0
Apron Length(ft):
Water Depth(ft): 0.01
Rustline Height(ft):0.3
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 2.18
Outfall Type: Free Fall In To Pool
Constriction Ratio:
Culvert Gradient: 1.10%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Outfall height red
  2. Compound gradient in pipe
  3. Mechanical damage or joints parting
ID: 2 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 164.9
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.875
Condition Rating(1-5): 2
Approach Angle:
Sedimentation At Inlet: Yes
Inlet Substrate: Cobble
Outlet Substrate: None
InletOutlet
Width(ft):4.5 4.6
Height(ft):3.21 4.52
Apron Length(ft):
Water Depth(ft): 0.6
Rustline Height(ft):1.9
Substrate Depth(ft):1.3 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 1.98
Outfall Type: Free Fall In To Pool
Constriction Ratio:
Culvert Gradient: 0.70%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Outfall height red
ID: 3 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 165.0
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.875
Condition Rating(1-5): 1
Approach Angle:
Sedimentation At Inlet: Yes
Inlet Substrate: Cobble
Outlet Substrate: None
InletOutlet
Width(ft):3.8 4.1
Height(ft):3.2 4.26
Apron Length(ft):
Water Depth(ft): 0.2
Rustline Height(ft):1.2
Substrate Depth(ft):1.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.62
Outfall Type: Cascade Over Rip-Rap
Constriction Ratio:
Culvert Gradient: 1.50%
Max Slope:
Max Slope Length:
 

Comments: Culvert bottom rusted out. No bottom at inlet.

  Culvert Observations:
  1. Outfall height red
  2. Compound gradient in pipe
  3. Mechanical damage or joints parting
  4. Structural Problem

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:Silt/ClayCobble
Stream Slope(deg.):1
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)
Stream
Width (ft)
Downstream ordinary high water 10.0 16.30
Upstream ordinary high water 8.80
Upstream ordinary high water 4.30
Upstream ordinary high water 2.10

Elevations

Locator ID Culvert
Number
River
Distance (ft)1
Distance From
Crossing (ft)2
Relative
Elevation (ft)
Road Elev 43.78
D/S Thalweg (Bottom of outlet fan, Sediment dump, tidal slough begins) 0.00 7.75
D/S Water Surface Elev 0.00 8.57
D/S Thalweg (Top of fan) 33.00 8.75
D/S Water Surface Elev 33.00 9.10
D/S Grade Ctrl (Thalweg) 181.70 11.21
D/S Water Surface Elev 181.70 11.71
D/S Tailcrest or 1st Thalweg 204.50 12.54
D/S Water Surface Elev 204.50 12.73
Max Pool Depth 213.20 9.71
Outlet Pool Water Elev 213.20 12.74
Outlet Invert 3 217.90 13.16
D/S Water Surface Elev 3 217.90 13.36
Outlet Culvert Top 3 217.90 17.42
Outlet Invert 2 217.90 14.12
D/S Water Surface Elev 2 217.90 14.72
Outlet Culvert Top 2 217.90 18.64
Outlet Invert 1 217.90 14.91
D/S Water Surface Elev 1 217.90 14.92
Outlet Culvert Top 1 217.90 19.91
Inlet Culvert Invert 3 383.40 15.72
U/S Water Surface Elev 3 383.40 16.07
Inlet Culvert Top 3 383.40 18.92
Inlet Culvert Invert 2 383.40 15.35
U/S Water Surface Elev 2 383.40 16.21
Inlet Culvert Top 2 383.40 18.56
Inlet Culvert Invert 1 383.40 16.88
U/S Water Surface Elev 1 383.40 16.88
Inlet Culvert Top 1 383.40 21.92
U/S Grade Ctrl (Thalweg) 388.40 15.47
U/S Water Surface Elev 388.40 16.41
U/S Thalweg (Top of weeds) 453.50 13.78
U/S Water Surface Elev 453.50 15.53

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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