Fish Passage Site 20300964

Coordinates (dec. deg.): 60.82361°, -149.13241°
Legal Description: S009N002E32
Region: South Central
Road Name: Seward Highway

Datum: NAD83
Quad Name / ITM: Seward D-6
AWC Stream #:
Stream Name: Unnamed

Elevation:

Site Comments: None

Survey Date: Oct 04, 2001

Survey KPCS1-EK098

Observers: Cecil Rich, James Maple, Tom Sigurdsson

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: None

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating:
 
Length(ft): 104.0
Inlet Type: Flared Inlet
Outlet Type:
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate: Cobble
Outlet Substrate: None
InletOutlet
Width(ft):4.7 4.7
Height(ft):2.58 2.77
Apron Length(ft):
Water Depth(ft):0.46 0.25
Rustline Height(ft):
Substrate Depth(ft):0.0 0.4
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: 0.38
Outfall Type:
Constriction Ratio: 0.41
Culvert Gradient: 3.59%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. None of this type

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 4.0 9.40
Downstream ordinary high water 50.0 7.10
Downstream ordinary high water 103.0 15.00
Upstream ordinary high water 5.0 8.50
Upstream ordinary high water 50.0 14.20
Upstream ordinary high water 100.0 8.50

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg 0.00 103.0 83.19
D/S Water Surface Elev 0.00 103.0 83.50
D/S OHW Elev 0.00 103.0 83.87
D/S OHW Elev 53.00 50.0 86.62
D/S Thalweg 53.00 50.0 85.98
D/S Water Surface Elev 53.00 50.0 86.50
Max Pool Depth 98.00 5.0 88.42
D/S Thalweg 98.00 5.0 88.42
OHW Left Bank 98.00 5.0 89.56
OHW Left Bank 98.00 5.0 89.29
D/S Water Surface Elev 99.00 4.0 89.29
OHW Left Bank 99.00 4.0 89.56
D/S Tailcrest or 1st Thalweg 99.00 4.0 88.42
Outlet Thalweg 1 103.00 0.0 89.62
Outlet Culvert Top 1 103.00 0.0 92.19
Outlet Invert 1 103.00 0.0 89.42
Outlet Rustline Height 1 103.00 0.0 89.50
Road Elev 155.00 97.81
Road Elev 155.00 98.08
Inlet Rustline Height 1 207.00 0.0 93.88
Inlet Culvert Top 1 207.00 0.0 95.73
Inlet Culvert Invert 1 207.00 0.0 93.15
Inlet Thalweg 1 207.00 0.0 93.55
U/S Thalweg 1 208.00 1.0 93.67
U/S Thalweg 1 212.00 5.0 93.98
U/S Water Surface Elev 1 212.00 5.0 94.32
U/S OHW elevation 1 212.00 5.0 94.44
U/S Thalweg 1 216.40 9.4 94.28
U/S Water Surface Elev 257.00 50.0 96.05
U/S Headwater 257.00 50.0 96.19
U/S Thalweg 257.00 50.0 95.67
U/S Headwater 307.00 100.0 97.90
U/S Thalweg 307.00 100.0 97.15
U/S Water Surface Elev 307.00 100.0 97.59

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): 1.1

Fish Observations

Species: juvenile Dolly Varden Life History: Resident
Total Fish Observed: 18 Fish Measured: 9 Fork Lengths (mm) Min: 55 Max: 138 Mean: 95
Collected/Observed by Gear Type: Downstream Minnow Trap (6)  Upstream Minnow Trap (12)  

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