Fish Passage Site 20502065

Coordinates (dec. deg.): 63.17720°, -147.47282°
Legal Description: F020S001E13
Region: South Central
Road Name: Valdez Mining District Road

Datum: NAD83
Quad Name / ITM: Healy A-1
AWC Stream #:
Stream Name: Valdez Creek

Elevation:

Site Comments: None

Survey Date: Jul 06, 2011

Survey MSB11-VMD03

Project Supervisor: Gillian O'Doherty, Alaska Department of Fish and Game — Anchorage, AK
Observers: John Greuey, Abraham Gioffre

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Culvert gradient red
  2. Hydraulic flows exceeded capacity
  3. Culvert sagging in middle
  4. Structural Problem
  5. Mechanical damage or joints parting

Comments: Three Culverts spaced apart for crossing of Valdez Creek. Very strong current at inlet and outlets. The inlet invert of pipe 3 was peeled back and up approximately 3' from the actual invert and created a 3' hydraulic drop at inlet. Outlet areas of all three culverts were very strong whitewater flow making measurements difficult.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 39.0
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 1
Approach Angle: 5.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):5.45 5.0
Height(ft):6.2 6.0
Apron Length(ft):0.0 0.0
Water Depth(ft): 1.5
Rustline Height(ft):5.0
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 1.0
Outfall Type: Cascade Over Rip-Rap
Constriction Ratio:
Culvert Gradient: 4.30%
Max Slope:
Max Slope Length:
 

Comments: Very turbulent flow at both inlets and outlets making measurements difficult. Gradients with TOP.
  Culvert Observations:
  1. Culvert gradient red
  2. Hydraulic flows exceeded capacity
  3. Culvert sagging in middle
  4. Structural Problem
  5. Mechanical damage or joints parting
ID: 2 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 39.0
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 1
Approach Angle: 5.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):4.8 5.7
Height(ft):6.2 6.0
Apron Length(ft):0.0 0.0
Water Depth(ft): 2.0
Rustline Height(ft):4.5
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 1.0
Outfall Type: Cascade Over Rip-Rap
Constriction Ratio:
Culvert Gradient: 3.30%
Max Slope:
Max Slope Length:
 

Comments: Very turbulent flow at both inlet and outlets making measurements difficult. Used TOP for gradient.
  Culvert Observations:
  1. Culvert gradient red
  2. Hydraulic flows exceeded capacity
  3. Culvert sagging in middle
  4. Structural Problem
  5. Mechanical damage or joints parting
ID: 3 Structure Type: Circular pipe (Structural steel plate) Fish Passage Rating: Red
 
Length(ft): 45.8
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 2.5
Corrugation Width(in.): 6.0
Condition Rating(1-5): 1
Approach Angle: 5.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):10.0 10.0
Height(ft):6.8 8.2
Apron Length(ft):0.0 0.0
Water Depth(ft): 2.5
Rustline Height(ft):3.0
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient: 4.30%
Max Slope:
Max Slope Length:
 

Comments: Very turbulent flow at both inlet and outlets making measurements difficult. Used TOP for gradient.
  Culvert Observations:
  1. Culvert gradient gray
  2. Hydraulic flows exceeded capacity
  3. Culvert sagging in middle
  4. Structural Problem
  5. Mechanical damage or joints parting

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleCobble
Subdominant:BoulderBoulder
Stream Slope(deg.):5.6
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Outlet Culvert Top (Extreme current and turbulence makes taking inverts and water surface at inverts impossible.Very dangerous.) 1 0.00 90.69
Outlet Culvert Top 2 0.00 91.36
Outlet Culvert Top 3 0.00 102.50
Road Elev 22.00 105.32
Inlet Culvert Top 1 39.00 92.39
Inlet Culvert Top 2 39.00 92.64
Inlet Culvert Top 3 45.80 104.48
U/S Grade Ctrl (Thalweg) (shot taken in a continuous riffle.) 80.00 89.49
U/S Water Surface Elev 80.00 90.52
U/S Grade Ctrl (Thalweg) (shot taken in a continuous riffle.) 200.00 96.55
U/S Water Surface Elev 200.00 97.24

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 (B) Trap Duration(h): 2.0
Comments: Trap set dwst and no fish caught.

Fish Observations

No fish observations occurred during this survey.

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