Fish Passage Site 20300985

Coordinates (dec. deg.): 59.80045°, -151.63651°
Legal Description: S004S014W26
Region: South Central
Road Name: Nikolaevsk Road

Datum: NAD83
Quad Name / ITM: Seldovia D-5
AWC Stream #: 244-10-10010-2011
Stream Name: Anchor River North Fork

Elevation:

Site Comments: eep trail along outchannel and crosses 300 feet below culvert.

Survey Date: Jul 03, 2001

Survey KPCS1-NK020

Observers: Cecil Rich, Michael Lund, Tracy Smith

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: CP damage at inlet. Overly steep embankment. Fill eroding above pipes at outlet. Jeep trail along outchannel and crosses 300 feet below culvert. Boulders in culverts for good resting places for fish.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating:
 
Length(ft): 76.35
Inlet Type: Projecting
Outlet Type:
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: Gravel
Outlet Substrate: Boulder
InletOutlet
Width(ft):8.3 8.1
Height(ft):7.12 8.25
Apron Length(ft):
Water Depth(ft):1.33 0.06
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: 0.43
Outfall Type:
Constriction Ratio: 0.75
Culvert Gradient: 0.55%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Cut-slope slumping or sliding into culvert (single event)
ID: 2 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating:
 
Length(ft): 79.35
Inlet Type: Projecting
Outlet Type:
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: Boulder
Outlet Substrate: None
InletOutlet
Width(ft):8.3 8.1
Height(ft):7.12 8.25
Apron Length(ft):
Water Depth(ft):1.75 0.83
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: 0.43
Outfall Type:
Constriction Ratio: 0.75
Culvert Gradient: 0.53%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Mechanical damage or joints parting

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleGravel
Subdominant:GravelCobble
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 36.0 26.40
Downstream ordinary high water 62.0 19.40
Downstream ordinary high water 146.0 22.00
Upstream ordinary high water 5.0 26.40
Upstream ordinary high water 46.0 22.80
Upstream ordinary high water 150.0 21.20

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg 79.37
D/S Thalweg 0.00 146.0 80.58
D/S Water Surface Elev 0.00 146.0 82.12
D/S OHW Elev 0.00 146.0 82.71
D/S Thalweg 84.00 62.0 81.40
D/S OHW Elev 84.00 62.0 82.71
D/S Water Surface Elev 84.00 62.0 82.23
D/S Tailcrest or 1st Thalweg 110.00 36.0 81.19
D/S Water Surface Elev 110.00 36.0 82.56
OHW Left Bank 110.00 36.0 83.44
OHW Left Bank 141.00 5.0 82.96
OHW Left Bank 141.00 5.0 82.65
Max Pool Depth 141.00 5.0 80.15
Outlet Invert 1 146.00 0.0 82.25
Outlet Thalweg 1 146.00 0.0 82.25
Outlet Invert 2 146.00 0.0 82.25
Outlet Thalweg 2 146.00 0.0 82.25
Outlet Rustline Height 1 146.00 0.0 83.67
Outlet Rustline Height 2 146.00 0.0 83.35
Outlet Culvert Top 2 146.00 0.0 90.33
Outlet Culvert Top 1 146.00 0.0 90.50
Road Elev 184.50 96.21
Road Elev 184.50 97.37
Inlet Culvert Top 1 223.00 0.0 89.79
Inlet Culvert Top 2 223.00 0.0 90.48
Inlet Rustline Height 1 223.00 0.0 84.56
Inlet Rustline Height 2 223.00 0.0 84.58
Inlet Culvert Invert 1 223.00 0.0 82.67
Inlet Thalweg 1 223.00 0.0 82.67
Inlet Culvert Invert 2 223.00 0.0 82.67
Inlet Thalweg 2 223.00 0.0 82.67
U/S Thalweg 2 224.00 1.0 82.87
U/S Thalweg 1 224.00 1.0 83.50
U/S Thalweg 2 228.00 5.0 83.17
U/S Thalweg 1 228.00 5.0 83.87
U/S OHW elevation 2 228.00 5.0 84.69
U/S Water Surface Elev 1 228.00 5.0 84.37
U/S Water Surface Elev 2 228.00 5.0 84.42
U/S OHW elevation 1 228.00 5.0 84.46
U/S Thalweg 2 239.60 16.6 84.04
U/S Thalweg 1 239.60 16.6 84.33
U/S Thalweg 269.00 46.0 84.42
U/S Water Surface Elev 269.00 46.0 85.56
U/S Headwater 269.00 46.0 85.83
U/S Water Surface Elev 373.00 150.0 85.89
U/S Headwater 373.00 150.0 86.39
U/S Thalweg 373.00 150.0 84.43

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): 2.15

Fish Observations

Species: juvenile Dolly Varden Life History: Resident
Total Fish Observed: 78 Fish Measured: 17 Fork Lengths (mm) Min: 76 Max: 115 Mean: 98
Collected/Observed by Gear Type: Downstream Minnow Trap (27)  Upstream Minnow Trap (51)  
 
Species: juvenile Chinook salmon Life History: Anadromous
Total Fish Observed: 2 Fish Measured: 1 Fork Lengths (mm) Min: 86 Max: 86 Mean: 86
Collected/Observed by Gear Type: Upstream Minnow Trap (2)  
 
Species: juvenile coho salmon Life History: Anadromous
Total Fish Observed: 6 Fish Measured: 3 Fork Lengths (mm) Min: 42 Max: 73 Mean: 60
Collected/Observed by Gear Type: Downstream Minnow Trap (2)  Upstream Minnow Trap (4)  

Questions or comments about this report can be directed to dfg.dsf.webmaster@alaska.gov