Fish Passage Site 20101840

Coordinates (dec. deg.): 61.51046°, -144.06837°
Legal Description: C004S007E24
Region: South Central
Road Name: McCarthy Road

Datum: NAD83
Quad Name / ITM: Valdez C-1
AWC Stream #:
Stream Name: Strelna Creek

Elevation:

Site Comments: Mile 14.8 McCarthy Rd;

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 UPDATE-MAC17

Project Supervisor: Gillian O'Doherty, ADFG
Observers:

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year: 2012


Site Observations:

  1. Culvert gradient gray

Comments: Update provided by the Copper River Watershed Project. Culverts were replaced with one large Pipe Arch. Culvert resurveyed by the Copper River Watershed Project on 9/12/14. Juvenile Coho caught upstream and downstream of crossing.

Culvert Measurements

ID: 1 Structure Type: Pipe-arch (Structural steel plate) Fish Passage Rating: Gray
 
Length(ft): 104.25
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 3.0
Corrugation Width(in.): 6.0
Condition Rating(1-5): 5
Approach Angle: 10.0
Sedimentation At Inlet: Yes
Inlet Substrate: Cobble
Outlet Substrate: Cobble
InletOutlet
Width(ft):16.42 16.42
Height(ft):9.54 10.25
Apron Length(ft):
Water Depth(ft): 2.15
Rustline Height(ft):
Substrate Depth(ft):
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.79
Culvert Gradient: 1.57%
Max Slope:
Max Slope Length:
 

Comments: Substrate estimated to be greater than 1 foot at both inverts but high velocity through culvert prevented hard measurement. Culvert may be Strucutral Aluminum Plate (SAP). Stream gradient taken with clinometer.

  Culvert Observations:
  1. Culvert gradient gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleCobble
Subdominant:GravelGravel
Stream Slope(deg.):2
Stream Flow Stage:Medium

No stream width data available.

Elevations

Locator ID Culvert
Number
River
Distance (ft)1
Distance From
Crossing (ft)2
Relative
Elevation (ft)
Road Elev 100.76
D/S Grade Ctrl (Thalweg) 0.00 84.66
D/S Water Surface Elev 0.00 86.18
D/S Tailcrest or 1st Thalweg 79.70 85.90
D/S Water Surface Elev 79.70 87.46
D/S Thalweg (Point in place of outlet pool, no pool standing waves) 107.55 85.88
D/S Water Surface Elev 107.55 87.73
Outlet Invert (on substrate) 128.45 86.45
D/S Water Surface Elev 128.45 88.60
Outlet Culvert Top 128.45 96.70
Inlet Culvert Top 232.70 98.34
Inlet Culvert Invert (on substrate) 232.70 88.80
U/S Water Surface Elev 232.70 90.00
U/S Grade Ctrl (Thalweg) 249.40 89.40
U/S Water Surface Elev 249.40 90.60
U/S Grade Ctrl (Thalweg) 330.54 91.09
U/S Water Surface Elev 330.54 92.19

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)
 
Gear Type: Minnow Trap (B)
 
Gear Type: Minnow Trap (C)
 
Gear Type: Minnow Trap (D)
 
Gear Type: Minnow Trap (E)
Comments: No fish caught
 
Gear Type: Minnow Trap (F)
 
Gear Type: Minnow Trap (G)

Fish Observations

Species: juvenile Dolly Varden Life History:
Total Fish Observed: 6 Fish Measured: 6 Fork Lengths (mm) Min: 75 Max: 120 Mean: 99
Collected/Observed by Gear Type: Downstream Minnow Trap (1)  Downstream Minnow Trap (1)  Upstream Minnow Trap (1)  Upstream Minnow Trap (1)  Upstream Minnow Trap (2)  
 
Species: juvenile rainbow trout Life History:
Total Fish Observed: 1 Fish Measured: 1 Fork Lengths (mm) Min: 56 Max: 56 Mean: 56
Collected/Observed by Gear Type: Upstream Minnow Trap (1)  
 
Species: juvenile coho salmon Life History:
Total Fish Observed: 1 Fish Measured: 1 Fork Lengths (mm) Min: 90 Max: 90 Mean: 90
Collected/Observed by Gear Type: Upstream Minnow Trap (1)  

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