Fish Passage Site 20301000

Coordinates (dec. deg.): 60.52409°, -149.64117°
Legal Description: S005N002W16
Region: South Central
Road Name: Sterling Highway

Datum: NAD83
Quad Name / ITM: Seward C-8
AWC Stream #: 244-30-10010-2177
Stream Name: Unnamed

Elevation:

Site Comments: Trib of Daves Creek. Braided channels up and downstream from culverts.

Survey Date: Aug 21, 2001

Survey KPCS1-NK045

Observers: Cecil Rich, James Maple

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: Trib of Daves Creek. Braided channels up and downstream from culverts. Two inlet channels bend sharply before flowing opposite directions into culverts. Inlet jacked on left culvert. Inlet velocities difficult to measure, 2 flows converging at pipes.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating:
 
Length(ft): 93.0
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: Gravel
InletOutlet
Width(ft):3.0 3.9
Height(ft):3.0 3.0
Apron Length(ft):
Water Depth(ft):0.83 0.7
Rustline Height(ft):
Substrate Depth(ft):0.0 0.4
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: -0.14
Outfall Type:
Constriction Ratio: 0.61
Culvert Gradient: 1.92%
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): 93.0
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: Gravel
InletOutlet
Width(ft):3.0 3.0
Height(ft):3.02 2.92
Apron Length(ft):
Water Depth(ft):0.79 0.55
Rustline Height(ft):
Substrate Depth(ft):0.0 0.25
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: -0.14
Outfall Type:
Constriction Ratio: 0.61
Culvert Gradient: 1.55%
Max Slope:
Max Slope Length:
ID: 3 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating:
 
Length(ft): 93.0
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: Gravel
InletOutlet
Width(ft):3.0 2.9
Height(ft):3.0 3.02
Apron Length(ft):
Water Depth(ft):0.83 0.8
Rustline Height(ft):
Substrate Depth(ft):0.0 0.19
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: -0.14
Outfall Type:
Constriction Ratio: 0.61
Culvert Gradient: 1.75%
Max Slope:
Max Slope Length:

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 19.0 30.30
Downstream ordinary high water 37.0 6.00
Downstream ordinary high water 82.0 8.00
Upstream ordinary high water 5.0 109.00
Upstream ordinary high water 50.0 21.50
Upstream ordinary high water 100.0 7.80

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg 0.00 82.0 89.54
D/S Water Surface Elev 0.00 82.0 90.46
D/S OHW Elev 0.00 82.0 90.60
D/S Water Surface Elev 45.00 37.0 91.08
D/S OHW Elev 45.00 37.0 91.10
D/S Thalweg 45.00 37.0 89.58
D/S Water Surface Elev 63.00 19.0 91.19
D/S Tailcrest or 1st Thalweg 63.00 19.0 90.31
OHW Left Bank 63.00 19.0 91.22
D/S Thalweg 75.00 7.0 89.75
Max Pool Depth 77.00 5.0 90.04
OHW Left Bank 77.00 5.0 91.04
OHW Left Bank 77.00 5.0 91.21
Outlet Thalweg 2 82.00 0.0 90.69
Outlet Invert 1 82.00 0.0 90.15
Outlet Invert 3 82.00 0.0 90.27
Outlet Invert 2 82.00 0.0 90.50
Outlet Thalweg 3 82.00 0.0 90.52
Outlet Thalweg 1 82.00 0.0 90.54
Outlet Culvert Top 1 82.00 0.0 93.15
Outlet Culvert Top 3 82.00 0.0 93.29
Outlet Culvert Top 2 82.00 0.0 93.42
Road Elev 128.50 97.73
Road Elev 128.50 97.85
Inlet Culvert Top 3 175.00 0.0 94.90
Inlet Culvert Top 1 175.00 0.0 94.94
Inlet Culvert Top 2 175.00 0.0 94.96
Inlet Culvert Invert 3 175.00 0.0 91.90
Inlet Thalweg 3 175.00 0.0 91.90
Inlet Culvert Invert 1 175.00 0.0 91.94
Inlet Thalweg 1 175.00 0.0 91.94
Inlet Culvert Invert 2 175.00 0.0 91.94
Inlet Thalweg 2 175.00 0.0 91.94
U/S Thalweg 2 176.00 1.0 91.92
U/S Thalweg 3 176.00 1.0 91.54
U/S Thalweg 1 176.00 1.0 91.15
U/S Thalweg 2 180.00 5.0 91.94
U/S Thalweg 3 180.00 5.0 92.08
U/S Thalweg 1 180.00 5.0 92.21
U/S OHW elevation 1 180.00 5.0 92.58
U/S Water Surface Elev 1 180.00 5.0 92.81
U/S Thalweg 2 181.00 6.0 91.94
U/S Thalweg 3 181.00 6.0 92.06
U/S Thalweg 1 181.90 6.9 92.23
U/S Water Surface Elev 225.00 50.0 93.21
U/S Headwater 225.00 50.0 93.27
U/S Thalweg 225.00 50.0 91.81
U/S Thalweg 275.00 100.0 93.40
U/S Headwater 275.00 100.0 93.96
U/S Water Surface Elev 275.00 100.0 94.15

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): 3.1
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.55

Fish Observations

Species: juvenile Dolly Varden Life History: Resident
Total Fish Observed: 95 Fish Measured: 20 Fork Lengths (mm) Min: 65 Max: 128 Mean: 94
Collected/Observed by Gear Type: Downstream Minnow Trap (41)  Upstream Minnow Trap (54)  
 
Species: juvenile coho salmon Life History: Anadromous
Total Fish Observed: 30 Fish Measured: 12 Fork Lengths (mm) Min: 38 Max: 81 Mean: 53
Collected/Observed by Gear Type: Downstream Minnow Trap (26)  Upstream Minnow Trap (4)  

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