Fish Passage Site 20400243

Coordinates (dec. deg.): 61.07733°, -149.81368°
Legal Description: S011N003W04
Region: South Central
Road Name: Old Seward Highway

Datum: NAD83
Quad Name / ITM: Anchorage A-8
AWC Stream #: 247-60-10320-2020
Stream Name: Little Rabbit Creek

Elevation:

Site Comments: RABBIT CREEK WATERSHED

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 ANC04-3A152

Observers: Dean Beers, Vic Stanculescu

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: ADULT COHO SALMON AND DOLLY VARDEN CHAR BELOW OUTLET, BAFFLED STRUCTURE

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating:
 
Length(ft): 152.2
Inlet Type: Projecting
Outlet Type:
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
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): 1.1
Rustline Height(ft):2.4
Substrate Depth(ft):
Backwatered?:
Baffles Present:
Embedded?: No
Outfall Height: 0.02
Outfall Type:
Constriction Ratio: 0.39
Culvert Gradient: 5.07%
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 150.0 34.30
Upstream bed width 150.0 21.00
Upstream ordinary high water 100.0 11.60
Upstream ordinary high water 125.0 16.90

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg 65.49
Max Pool Depth 65.61
D/S Tailcrest or 1st Thalweg 66.01
OHW Left Bank 66.45
OHW Left Bank 68.72
U/S Thalweg 1 73.13
Outlet Invert (TAKEN OFF SUBSTRATE) 1 0.00 0.0 65.37
Road Elev 76.00 95.65
Inlet Culvert Invert 1 152.00 0.0 73.09

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.

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