Fish Passage Site 20300947

Coordinates (dec. deg.): 60.59944°, -149.54100°
Legal Description: S006N002W24
Region: South Central
Road Name: Seward Highway

Datum: NAD83
Quad Name / ITM: Seward C-7
AWC Stream #: 244-30-10010-2177-3063
Stream Name: Summit Creek

Elevation:

Site Comments: Channel one makes a 90 degree turn at inlet.

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-EK071

Observers: Cecil Rich, William Glick, James Maple

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: Channel one makes a 90 degree turn at inlet. Nice adult Dolly Varden observed.

Culvert Measurements

ID: 1 Structure Type: Closed-bottom arch (Strutural Metal Plate) Fish Passage Rating:
 
Length(ft): 88.0
Inlet Type: Mitered
Outlet Type:
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 6.0
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: Cobble
Outlet Substrate: Cobble
InletOutlet
Width(ft):9.6 9.5
Height(ft):6.71 6.04
Apron Length(ft):
Water Depth(ft):1.83 1.17
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: -0.15
Outfall Type:
Constriction Ratio: 1.16
Culvert Gradient: -0.24%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. None of this type
ID: 2 Structure Type: Closed-bottom arch (Strutural Metal Plate) Fish Passage Rating:
 
Length(ft): 88.0
Inlet Type: Mitered
Outlet Type:
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 6.0
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: Cobble
Outlet Substrate: Cobble
InletOutlet
Width(ft):9.5 9.6
Height(ft):6.79 7.25
Apron Length(ft):
Water Depth(ft):1.92 1.08
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: -0.15
Outfall Type:
Constriction Ratio: 1.16
Culvert Gradient: -0.26%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. None of this type

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleCobble
Subdominant:BoulderBoulder
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 7.5 30.00
Downstream ordinary high water 50.0 20.80
Downstream ordinary high water 100.0 18.00
Upstream ordinary high water 5.0 13.30
Upstream ordinary high water 50.0 15.00
Upstream ordinary high water 100.0 18.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
OHW Left Bank 83.92
D/S OHW Elev 0.00 100.0 83.12
D/S Thalweg 0.00 100.0 81.40
D/S Water Surface Elev 0.00 100.0 82.75
D/S Thalweg 50.00 50.0 81.90
D/S Water Surface Elev 50.00 50.0 83.35
D/S OHW Elev 50.00 50.0 83.87
OHW Left Bank 70.00 30.0 82.31
D/S Water Surface Elev 92.50 7.5 83.70
OHW Left Bank 92.50 7.5 84.13
D/S Tailcrest or 1st Thalweg 92.50 7.5 82.31
Max Pool Depth 95.00 5.0 82.92
D/S Thalweg 95.00 5.0 82.92
Outlet Invert 1 100.00 0.0 82.75
Outlet Thalweg 1 100.00 0.0 82.75
Outlet Invert 2 100.00 0.0 82.69
Outlet Thalweg 2 100.00 0.0 82.69
Outlet Rustline Height 2 100.00 0.0 83.79
Outlet Rustline Height 1 100.00 0.0 84.08
Outlet Culvert Top 1 100.00 0.0 88.79
Outlet Culvert Top 2 100.00 0.0 89.94
Road Elev 144.00 95.71
Road Elev 144.00 95.92
Inlet Culvert Top 1 188.00 0.0 89.25
Inlet Culvert Top 2 188.00 0.0 89.25
Inlet Rustline Height 2 188.00 0.0 84.40
Inlet Rustline Height 1 188.00 0.0 84.50
Inlet Culvert Invert 2 188.00 0.0 82.46
Inlet Thalweg 2 188.00 0.0 82.46
Inlet Culvert Invert 1 188.00 0.0 82.54
Inlet Thalweg 1 188.00 0.0 82.54
U/S Thalweg 1 189.00 1.0 82.60
U/S Thalweg 2 189.00 1.0 82.44
U/S Thalweg 1 193.00 5.0 82.29
U/S Thalweg 2 193.00 5.0 82.94
U/S Water Surface Elev 1 193.00 5.0 84.44
U/S OHW elevation 1 193.00 5.0 85.17
U/S Thalweg 2 207.10 19.1 83.83
U/S Thalweg 1 207.10 19.1 83.08
U/S Thalweg 238.00 50.0 83.87
U/S Water Surface Elev 238.00 50.0 85.29
U/S Headwater 238.00 50.0 85.71
U/S Water Surface Elev 288.00 100.0 86.00
U/S Headwater 288.00 100.0 86.54
U/S Thalweg 288.00 100.0 84.83

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): 1.2
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.2

Fish Observations

Species: juvenile Dolly Varden Life History: Resident
Total Fish Observed: 4 Fish Measured: 2 Fork Lengths (mm) Min: 94 Max: 138 Mean: 116
Collected/Observed by Gear Type: Downstream Minnow Trap (2)  Upstream Minnow Trap (2)  
Comments: adults observed three times
 
Species: juvenile coho salmon Life History: Anadromous
Total Fish Observed: 20 Fish Measured: 10 Fork Lengths (mm) Min: 41 Max: 53 Mean: 44
Collected/Observed by Gear Type: Upstream Minnow Trap (20)  

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