Fish Passage Site 20200190

Coordinates (dec. deg.): 60.77482°, -148.71616°
Legal Description: S008N004E23
Region: South Central
Road Name: Whittier Road

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

Elevation:

Site Comments: UNAMED FEEDER CREEK TO PRINCE WILLIAM SOUND, SITE IS 1/4 MI FROM WHITTIER SIDE OF TUNNEL ENTRANCE,

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 ANC04-4A190

Observers: Dean Beers, Vic Stanculescu

Overall Fish Passage Rating: Red

Tidal: Yes
Backwatered: No

Step Pools:
Construction Year:


Comments: UNAMED FEEDER CREEK TO PRINCE WILLIAM SOUND, SITE IS 1/4 MI FROM WHITTIER SIDE OF TUNNEL ENTRANCE, HEADWALL AT INLET IS PASSING WATER, NO FLOW IS GOING THROUGH THE CULVERT, ADULT COHO CARCASSES ARE PRESENT BELOW OUTLET

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating:
 
Length(ft): 131.3
Inlet Type: Headwall
Outlet Type:
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate:
Outlet Substrate:
InletOutlet
Width(ft):5.5
Height(ft):5.5
Apron Length(ft):
Water Depth(ft): 0.0
Rustline Height(ft):0.8
Substrate Depth(ft):
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: 0.18
Outfall Type:
Constriction Ratio: 0.44
Culvert Gradient: 9.98%
Max Slope:
Max Slope Length:

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:
Subdominant:
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream bank full 75.0 17.50
Upstream bank full 100.0 18.10
Upstream bed width 75.0 9.50
Upstream bed width 100.0 10.20
Upstream ordinary high water 75.0 12.20
Upstream ordinary high water 100.0 12.90

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg 62.21
Max Pool Depth 63.46
D/S Tailcrest or 1st Thalweg 64.79
OHW Left Bank 65.44
OHW Left Bank 71.35
U/S Thalweg 1 77.88
Outlet Invert (ESTIMATED, BAD COND) 1 0.00 0.0 65.62
Road Elev 65.50 101.30
Inlet Culvert Invert (ESTIMATED, BAD COND) 1 131.00 0.0 78.72

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: Visual Observation, Ground (A)

Fish Observations

No fish observations occurred during this survey.

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