Fish Passage Site 20200944

Coordinates (dec. deg.): 60.14376°, -149.41443°
Legal Description: S001N001W26
Region: South Central
Road Name: Salmon Creek Road

Datum: NAD83
Quad Name / ITM: Seward A-7
AWC Stream #:
Stream Name: Unnamed

Elevation:

Site Comments: Distributary of Salmon Creek. Amount of water in this channel varies from year to year. Marshy on both sides of creek.

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 KPCS1-EK068

Observers: Cecil Rich, William Glick, James Maple

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: Distributary of Salmon Creek. Marshy on both sides of creek. Lots of course gravel accum. Above Salmon Creek Rd. culvert. Left culvert highly aggraded - very little flow in it. Many pink salmon observed in spawning area above Salmon Creek Rd.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating:
 
Length(ft): 69.0
Inlet Type: Mitered
Outlet Type:
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.6
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: Gravel
Outlet Substrate: Cobble
InletOutlet
Width(ft):5.4 5.8
Height(ft):2.33 4.14
Apron Length(ft):
Water Depth(ft):0.25 2.27
Rustline Height(ft):
Substrate Depth(ft):0.0 0.02
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: 0.05
Outfall Type:
Constriction Ratio: 0.48
Culvert Gradient: 3.14%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. None of this type
ID: 2 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating:
 
Length(ft): 70.0
Inlet Type: Mitered
Outlet Type:
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.6
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: Gravel
Outlet Substrate: Cobble
InletOutlet
Width(ft):5.5 5.5
Height(ft):3.31 4.08
Apron Length(ft):
Water Depth(ft):1.17 2.19
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: 0.05
Outfall Type:
Constriction Ratio: 0.48
Culvert Gradient: 1.46%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. None of this type

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:CobbleGravel
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 38.0 16.00
Downstream ordinary high water 95.0 29.00
Downstream ordinary high water 127.0 73.00
Upstream ordinary high water 5.0 84.20
Upstream ordinary high water 42.0 20.00
Upstream ordinary high water 69.0 25.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg 0.00 127.0 90.94
D/S OHW Elev 0.00 127.0 91.46
D/S Water Surface Elev 0.00 127.0 91.50
D/S Water Surface Elev 32.00 95.0 91.54
D/S OHW Elev 32.00 95.0 91.60
D/S Thalweg 32.00 95.0 91.06
D/S Tailcrest or 1st Thalweg 89.00 38.0 90.40
D/S Water Surface Elev 89.00 38.0 91.54
OHW Left Bank 89.00 38.0 91.67
OHW Left Bank 122.00 5.0 91.67
OHW Left Bank 122.00 5.0 91.62
Max Pool Depth 122.00 5.0 87.29
D/S Thalweg 123.00 4.0 86.92
Outlet Rustline Height 2 127.00 0.0 91.73
Outlet Invert 1 127.00 0.0 89.23
Outlet Thalweg 1 127.00 0.0 89.25
Outlet Invert 2 127.00 0.0 89.48
Outlet Thalweg 2 127.00 0.0 89.48
Outlet Rustline Height 1 127.00 0.0 91.81
Outlet Culvert Top 1 127.00 0.0 93.37
Outlet Culvert Top 2 127.00 0.0 93.56
Road Elev 161.50 96.85
Road Elev 161.50 96.90
Inlet Culvert Top 1 196.00 0.0 93.73
Inlet Culvert Top 2 196.00 0.0 93.81
Inlet Culvert Invert 2 196.00 0.0 90.50
Inlet Thalweg 2 196.00 0.0 90.50
Inlet Culvert Invert 1 196.00 0.0 91.40
Inlet Thalweg 1 196.00 0.0 91.40
Inlet Rustline Height 2 196.00 0.0 90.67
Inlet Rustline Height 1 196.00 0.0 91.71
U/S Thalweg 1 197.00 1.0 91.40
U/S Thalweg 2 197.00 1.0 90.50
U/S Thalweg 2 201.00 5.0 90.50
U/S OHW elevation 2 201.00 5.0 91.75
U/S Water Surface Elev 1 201.00 5.0 91.67
U/S Water Surface Elev 2 201.00 5.0 91.69
U/S Thalweg 1 201.00 5.0 91.48
U/S OHW elevation 1 201.00 5.0 91.79
U/S Thalweg 2 207.00 11.0 90.77
U/S Thalweg 1 207.20 11.2 91.00
U/S Thalweg 238.00 42.0 91.21
U/S Water Surface Elev 238.00 42.0 91.77
U/S Headwater 238.00 42.0 91.79
U/S Thalweg 265.00 69.0 90.79
U/S Water Surface Elev 265.00 69.0 91.81
U/S Headwater 265.00 69.0 91.83

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): 1.25
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.1

Fish Observations

Species: juvenile Dolly Varden Life History: Resident
Total Fish Observed: 13 Fish Measured: 5 Fork Lengths (mm) Min: 105 Max: 132 Mean: 119
Collected/Observed by Gear Type: Downstream Minnow Trap (6)  Upstream Minnow Trap (7)  
 
Species: juvenile coho salmon Life History: Anadromous
Total Fish Observed: 218 Fish Measured: 20 Fork Lengths (mm) Min: 52 Max: 129 Mean: 81
Collected/Observed by Gear Type: Downstream Minnow Trap (141)  Upstream Minnow Trap (77)  

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