Fish Passage Site 20301022

Coordinates (dec. deg.): 59.81845°, -151.60668°
Legal Description: S004S014W24
Region: South Central
Road Name: Nikolaevsk Road

Datum: NAD83
Quad Name / ITM: Seldovia D-5
AWC Stream #:
Stream Name: Unnamed

Elevation:

Site Comments: None

Survey Date: Jul 15, 2001

Survey KPCS1-SK031

Observers: Cecil Rich, Michael Lund

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: 2 culverts, large one sits higher, has one foot perch with large boulder at outlet; small culvert is countersunk.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating:
 
Length(ft): 32.0
Inlet Type: Projecting
Outlet Type:
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):1.5 1.5
Height(ft):1.5 2.5
Apron Length(ft):
Water Depth(ft):0.61 0.37
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: 0.92
Outfall Type:
Constriction Ratio: 0.93
Culvert Gradient: 7.34%
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): 30.11
Inlet Type: Projecting
Outlet Type:
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):2.5 2.6
Height(ft):2.4 2.5
Apron Length(ft):
Water Depth(ft):0.24 0.25
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: 0.92
Outfall Type:
Constriction Ratio: 0.93
Culvert Gradient: 5.18%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. None of this type

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClayCobble
Subdominant:BoulderCobble
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 8.0 7.50
Downstream ordinary high water 50.0 1.80
Downstream ordinary high water 79.0 2.00
Upstream ordinary high water 5.0 8.90
Upstream ordinary high water 29.0 6.40
Upstream ordinary high water 58.0 2.20

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg 0.00 79.0 85.81
D/S Water Surface Elev 0.00 79.0 86.37
D/S OHW Elev 0.00 79.0 86.83
D/S Thalweg 29.00 50.0 86.94
D/S Water Surface Elev 29.00 50.0 87.65
D/S OHW Elev 29.00 50.0 87.87
D/S Water Surface Elev 71.00 8.0 89.52
OHW Left Bank 71.00 8.0 89.71
D/S Tailcrest or 1st Thalweg 71.00 8.0 89.06
OHW Left Bank 74.00 5.0 89.58
OHW Left Bank 74.00 5.0 89.67
Max Pool Depth 74.00 5.0 88.65
D/S Thalweg 74.00 5.0 88.65
Outlet Invert 1 79.00 0.0 89.02
Outlet Rustline Height 1 79.00 0.0 89.71
Outlet Invert 2 79.00 0.0 90.25
Outlet Rustline Height 2 79.00 0.0 90.65
Outlet Thalweg 1 79.00 0.0 89.17
Outlet Thalweg 2 79.00 0.0 89.17
Outlet Culvert Top 1 79.00 0.0 91.50
Outlet Culvert Top 2 79.00 0.0 92.75
Road Elev 94.50 94.92
Road Elev 94.50 94.96
Inlet Culvert Top 1 110.00 0.0 92.83
Inlet Culvert Top 2 110.00 0.0 94.23
Inlet Rustline Height 2 110.00 0.0 92.17
Inlet Culvert Invert 1 110.00 0.0 91.37
Inlet Thalweg 1 110.00 0.0 91.40
Inlet Thalweg 2 110.00 0.0 91.67
Inlet Rustline Height 1 110.00 0.0 91.81
Inlet Culvert Invert 2 110.00 0.0 91.81
U/S Thalweg 1 111.00 1.0 91.56
U/S Thalweg 1 113.00 3.0 91.90
U/S OHW elevation 1 115.00 5.0 91.94
U/S Water Surface Elev 1 115.00 5.0 92.04
U/S Thalweg 1 115.00 5.0 91.90
U/S Thalweg 2 115.00 5.0 91.17
U/S Headwater 139.00 29.0 92.06
U/S Water Surface Elev 139.00 29.0 91.94
U/S Thalweg 139.00 29.0 89.69
U/S Thalweg 168.00 58.0 90.77
U/S Water Surface Elev 168.00 58.0 92.02
U/S Headwater 168.00 58.0 92.31

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): 2.05
 
Gear Type: Minnow Trap (B) Trap Duration(h): 2.17

Fish Observations

Species: juvenile Dolly Varden Life History: Resident
Total Fish Observed: 16 Fish Measured: 8 Fork Lengths (mm) Min: 105 Max: 140 Mean: 120
Collected/Observed by Gear Type: Downstream Minnow Trap (4)  Upstream Minnow Trap (12)  

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