Fish Passage Site 10302217

Coordinates (dec. deg.): 58.39279°, -134.75055°
Legal Description: C040S065E19
Region: Southeast
Road Name: Picnic Beach Road

Datum: NAD83
Quad Name / ITM: Juneau B-3
AWC Stream #: 111-50-10310
Stream Name: Picnic Creek

Elevation:

Site Comments: None

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 SEA11-PBR01

Project Supervisor: Gillian O'Doherty, Alaska Department of Fish and Game — Anchorage, AK
Observers: Jason Olds, Charmagne Gutierrez

Overall Fish Passage Rating: Gray

Tidal: Maybe
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Constriction ratio gray

Comments: Visual observation: Juvenile salmonids upstream/downstream. Footer/Headwall at outlet-Fish Passage Structure. Stream grade calculated 14 x OHW.

Culvert Measurements

ID: 1 Structure Type: Oval (Structural steel plate) Fish Passage Rating: Gray
 
Length(ft): 44.9
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.33
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 42.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):4.6 4.6
Height(ft):5.3 5.3
Apron Length(ft):
Water Depth(ft): 0.4
Rustline Height(ft):1.2
Substrate Depth(ft):
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 8.27
Outfall Type: Fish Passage Structue
Constriction Ratio: 0.53
Culvert Gradient: 0.56%
Max Slope:
Max Slope Length:
 

Comments: Visual observation: Juvenile salmonids upstream/downstream. Footer/Headwall at outlet-Fish Passage Structure. Stream grade calculated 14 x OHW.
  Culvert Observations:
  1. Constriction ratio gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:SandSand
Stream Slope(deg.):0.24
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 20.0 10.30
Upstream ordinary high water 48.0 7.20
Upstream ordinary high water 81.0 8.70

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 104.89
D/S Grade Ctrl (Thalweg) (Tide Pool Tailwater control) 0.00 89.47
D/S Water Surface Elev 0.00 89.66
D/S Water Surface Elev 36.00 89.65
Max Pool Depth 36.00 88.83
D/S Grade Ctrl (Thalweg) (log weir on notch) 55.00 91.60
D/S Water Surface Elev 65.00 91.84
Max Pool Depth 65.00 91.06
D/S Grade Ctrl (Thalweg) (notch in Weir 1) 66.00 92.62
D/S Water Surface Elev 71.00 92.95
Max Pool Depth 71.00 92.26
D/S Grade Ctrl (Thalweg) (Notch in weir 2) 73.00 93.62
D/S Water Surface Elev 75.00 93.97
Max Pool Depth 75.00 93.18
D/S Grade Ctrl (Thalweg) (Notch in weir 3) 79.00 93.61
Max Pool Depth 80.00 94.27
D/S Water Surface Elev 80.00 94.93
D/S Grade Ctrl (Thalweg) (Notch in weir 4) 82.00 95.64
D/S Water Surface Elev 85.00 95.99
Max Pool Depth 85.00 95.34
D/S Grade Ctrl (Thalweg) (Notch weir 5) 87.00 96.62
D/S Water Surface Elev 90.00 97.00
Max Pool Depth 90.00 96.30
D/S Grade Ctrl (Thalweg) (notch in weir 6 also tailwater control for culvert) 92.00 97.60
D/S Water Surface Elev 94.00 97.92
Max Pool Depth 94.00 97.58
Outlet Invert (on metal) 96.00 97.52
D/S Water Surface Elev 96.00 97.92
Outlet Culvert Top 96.00 102.97
Inlet Culvert Top 141.00 103.41
Inlet Culvert Invert (on metal) 141.00 98.17
U/S Water Surface Elev 141.00 98.29
U/S Water Surface Elev (1st resting) 143.00 98.43
U/S Grade Ctrl (Thalweg) (top of riffle step) 143.00 98.16

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) Trap Duration(h): 30.0
Channel Type: Main Channel (>50% of water flow)
Comments: Unidentified juvenile salmonids observed upstream and downstream from culvert.
 
Gear Type: (B)

Fish Observations

No fish observations occurred during this survey.

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