Fish Passage Site 20300912

Coordinates (dec. deg.): 59.31087°, -151.77171°
Legal Description: S010S015W14
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: Stream has cascading falls (some exceeding 300'), plunge pools, large boulders and a gradient of ~40 degrees. Water is clear with very swift flow. The physical characteristics of the stream make it a natural barrier for fish migration.

Survey Date: Aug 19, 2004

Survey KPC04-1A088

Observers: Mary King, Pam Russell

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: Location: Port Graham Stream: Stream has cascading falls (some exceeding 300'), plunge pools, large boulders and a gradient of ~40 degrees. Water is clear with very swift flow. The physical characteristics of the stream make it a natural barrier for fish migration. Due to ponding upstream of inlet, flow measurements were done downstream of outlet; rocks were problematic. Culvert: Pipe condition=5. Not embedded.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating:
 
Length(ft): 43.04
Inlet Type: Projecting
Outlet Type:
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate:
Outlet Substrate:
InletOutlet
Width(ft):7.0
Height(ft):7.0
Apron Length(ft):
Water Depth(ft): 0.1
Rustline Height(ft):1.0
Substrate Depth(ft):
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: 5.13
Outfall Type:
Constriction Ratio: 0.57
Culvert Gradient: 23.93%
Max Slope:
Max Slope Length:

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:BedrockBedrock
Subdominant:
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream bank full 75.0 10.00
Upstream bank full 100.0 15.75
Upstream bank full 125.0 19.50
Upstream bank full 150.0 20.33
Upstream bed width 75.0 4.42
Upstream bed width 100.0 5.17
Upstream bed width 125.0 7.75
Upstream bed width 150.0 11.00
Upstream ordinary high water 75.0 7.75
Upstream ordinary high water 100.0 14.08
Upstream ordinary high water 125.0 10.75
Upstream ordinary high water 150.0 16.33

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Tailcrest or 1st Thalweg 85.91
OHW Left Bank 87.23
D/S Thalweg 87.43
OHW Left Bank 88.30
Outlet Culvert Top (Orange painted "X" painted on top of outlet, measurement taken on 3rd corrugation.) 1 100.00
U/S Thalweg 1 104.83
Max Pool Depth 0.00 5.0 87.43
Outlet Invert 1 5.00 0.0 92.26
Road Elev (Road surface) 26.50 106.38
Inlet Culvert Invert 1 48.00 0.0 102.56

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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