Fish Passage Site 20300923

Coordinates (dec. deg.): 59.34301°, -151.83830°
Legal Description: S010S015W05
Region: South Central
Road Name: Port Graham

Datum: NAD83
Quad Name / ITM: Seldovia B-5
AWC Stream #:
Stream Name:

Elevation:

Site Comments: Location: Port Graham Stream: Steep gradient with many riffles, pools and some 12"+ falls. Substrate is pebble/cobble with small boulders; layers of bedrock downstream. Stream bank is densely vegetated.

Survey Date: Sep 19, 2004

Survey KPC04-1A103

Observers: Mary King, Pam Russell

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: Location: Port Graham Stream: Steep gradient with many riffles, pools and some 12"+ falls. Substrate is pebble/cobble with small boulders; layers of bedrock downstream. Stream bank is densely vegetated. Flow measurements done at 45' upstream; rocks were problematic. Culvert: Arch is supported by rocks and functions well. Pipe condition=5. Not embedded (natural substrate).

Culvert Measurements

ID: 1 Structure Type: Open-bottom arch (Corrugated Metal) Fish Passage Rating:
 
Length(ft): 40.83
Inlet Type: Projecting
Outlet Type:
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 6.0
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate:
Outlet Substrate:
InletOutlet
Width(ft):6.17
Height(ft):4.58
Apron Length(ft):
Water Depth(ft): 0.2
Rustline Height(ft):0.0
Substrate Depth(ft):
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: -0.04
Outfall Type:
Constriction Ratio: 1.19
Culvert Gradient: 4.43%
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 8.25
Upstream bank full 100.0 4.17
Upstream bank full 125.0 5.42
Upstream bank full 150.0 8.42
Upstream bed width 75.0 1.25
Upstream bed width 100.0 0.83
Upstream bed width 125.0 1.83
Upstream bed width 150.0 1.50
Upstream ordinary high water 75.0 7.42
Upstream ordinary high water 100.0 3.17
Upstream ordinary high water 125.0 3.58
Upstream ordinary high water 150.0 6.58

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg 96.41
D/S Tailcrest or 1st Thalweg 96.49
OHW Left Bank 96.80
OHW Left Bank 97.53
U/S Thalweg 1 99.05
Outlet Culvert Top (Orange painted "X" on top of outlet. Measurement taken from last corrugation.) 1 100.00
Max Pool Depth 0.00 5.0 96.06
Outlet Invert 1 5.00 0.0 96.56
Road Elev (Road surface.) 25.00 104.38
Inlet Culvert Invert 1 45.00 0.0 98.37

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

No fish sampling occurred during this survey.

Fish Observations

No fish observations occurred during this survey.

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