Fish Passage Site 20100558

Coordinates (dec. deg.): 63.04714°, -145.83977°
Legal Description: F021S010E33
Region: South Central
Road Name: Denali Highway

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

Elevation:

Site Comments: Tributary to Swede Lake

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 CRWP17-Den1

Observers: Kirsti Jurica, Hoots Witsoe

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. Structural Problem
  4. Mechanical damage or joints parting

Comments: Culvert assessment performed and submitted by the Copper River Watershed Project. Fast moving upland channel. Arctic grayling caught downstream.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 127.5
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 0.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):6.15 6.1
Height(ft):5.74 5.99
Apron Length(ft):
Water Depth(ft): 0.64
Rustline Height(ft):1.4
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 1.64
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.78
Culvert Gradient: 2.76%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert gradient red
  2. Outfall height red
  3. Structural Problem
  4. Mechanical damage or joints parting

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleCobble
Subdominant:GravelGravel
Stream Slope(deg.):5
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 12.10
Downstream ordinary high water 11.20
Downstream ordinary high water 13.10
Upstream ordinary high water 6.90
Upstream ordinary high water 10.60
Upstream ordinary high water 6.30

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 100.00
D/S Grade Ctrl (Thalweg) 0.00 74.86
D/S Water Surface Elev 0.00 75.91
D/S Tailcrest or 1st Thalweg 99.00 79.17
D/S Water Surface Elev 99.00 80.10
Outlet Pool Water Elev 106.00 80.21
Max Pool Depth 106.00 78.16
Outlet Culvert Top 115.00 87.20
Outlet Invert (on pipe) 115.00 81.21
D/S Water Surface Elev 115.00 81.85
Inlet Culvert Invert (on pipe) 242.00 84.73
U/S Water Surface Elev 242.00 85.50
Inlet Culvert Top 242.00 90.47
U/S Grade Ctrl (Thalweg) 251.00 86.06
U/S Water Surface Elev 251.00 86.54
U/S Grade Ctrl (Thalweg) 336.00 88.60
U/S Water Surface Elev 336.00 89.40
U/S Grade Ctrl (Thalweg) 432.00 89.75
U/S Water Surface Elev 432.00 91.78

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) Trap Duration(h): 16.0
 
Gear Type: Minnow Trap (B) Trap Duration(h): 16.0
Comments: No fish caught
 
Gear Type: Minnow Trap (C) Trap Duration(h): 16.0
Comments: No fish caught
 
Gear Type: Minnow Trap (D) Trap Duration(h): 16.0
Comments: No fish caught

Fish Observations

Species: juvenile Arctic grayling Life History: Resident
Total Fish Observed: 1 Fish Measured: 1 Fork Lengths (mm) Min: 80 Max: 80 Mean: 80
Collected/Observed by Gear Type: Not Recorded Minnow Trap (1)  

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