Fish Passage Site 20300924

Coordinates (dec. deg.): 59.29671°, -151.71590°
Legal Description: S010S014W19
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 pools and some falls (~12"). Substrate is very rocky upstream and gravel/cobble downstream. Downstream has gravel bars and is more meandering. Streambank is densely vegetated.

Survey Date: Aug 17, 2004

Survey KPC04-1A104

Observers: Mary King, Pam Russell

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Comments: Location: Port Graham Stream: Steep gradient with pools and some falls (~12"). Substrate is very rocky upstream and gravel/cobble downstream. Downstream has gravel bars and is more meandering. Streambank is densely vegetated. Minimal bank undercut. Flow measurements were done 30' upstream of inlet; rocks and water level were problematic. Culvert: Pipe condition=5. Outlet is perched. Not embedded. Note: Waypoint led to a road location with no culvert, but consistent 400' error in the Port Graham waypoint database indicated that the culvert was likely located on a side road down the mountainside--measurements done there.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating:
 
Length(ft): 30.64
Inlet Type: Projecting
Outlet Type:
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate:
Outlet Substrate:
InletOutlet
Width(ft):4.0
Height(ft):4.08
Apron Length(ft):
Water Depth(ft): 0.1
Rustline Height(ft):0.5
Substrate Depth(ft):
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: 0.56
Outfall Type:
Constriction Ratio: 0.58
Culvert Gradient: 2.87%
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 9.25
Upstream bank full 100.0 7.50
Upstream bank full 125.0 9.83
Upstream bank full 150.0 7.42
Upstream bed width 75.0 1.83
Upstream bed width 100.0 2.83
Upstream bed width 125.0 6.67
Upstream bed width 150.0 4.75
Upstream ordinary high water 75.0 7.42
Upstream ordinary high water 100.0 5.33
Upstream ordinary high water 125.0 8.75
Upstream ordinary high water 150.0 6.08

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Tailcrest or 1st Thalweg 95.03
OHW Left Bank (Pipe perched.) 95.38
OHW Left Bank 95.77
D/S Thalweg 93.98
U/S Thalweg 1 97.46
Outlet Culvert Top (Orange Painted "X" on top of outlet; measurement on 2nd corrugation.) 1 100.00
Max Pool Depth 0.00 5.0 94.21
Outlet Invert (Pipe perched.) 1 5.00 0.0 95.84
Road Elev (Road surface) 20.00 101.06
Inlet Culvert Invert 1 35.00 0.0 96.72

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

No fish sampling occurred during this survey.

Fish Observations

No fish observations occurred during this survey.

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