Fish Passage Site 10302161

Coordinates (dec. deg.): 58.36118°, -134.51860°
Legal Description: C040S066E33
Region: Southeast
Road Name: Schinder Drive

Datum: NAD83
Quad Name / ITM: Juneau B-2
AWC Stream #:
Stream Name: East Creek

Elevation:

Site Comments: Located in Switzer Village. Road mapped as Mallard but is really Schneider.

Survey Date: Jul 07, 2011

Survey SEA11-SWV01

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

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: Yes
Construction Year:


Site Observations:

  1. Culvert gradient red
  2. Constriction ratio gray
  3. Inlet perch

Comments: Concrete wiers old but functional. Structured stream with rock walls/Boulders. Fish pools upstream 100'. *Highly mechanically influenced; stream channeled and urbanized US/DS. Braids US @ 200'

Culvert Measurements

ID: 1 Structure Type: Oval (Structural aluminum plate) Fish Passage Rating: Red
 
Length(ft): 84.9
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.33
Corrugation Width(in.): 2.5
Condition Rating(1-5): 3
Approach Angle: 16.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):5.5 5.6
Height(ft):6.7 6.5
Apron Length(ft):
Water Depth(ft): 0.38
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.51
Culvert Gradient: 5.32%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert gradient red
  2. Constriction ratio gray
  3. Inlet perch

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleCobble
Subdominant:GravelGravel
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 60.0 10.80
Upstream ordinary high water 80.0 10.20
Upstream ordinary high water 100.0 11.20

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Water Surface Elev 0.00 94.64
D/S Grade Ctrl (Thalweg) 0.00 94.50
D/S Tailcrest or 1st Thalweg 10.00 94.50
D/S Water Surface Elev 10.00 94.82
Max Pool Depth 22.50 93.53
Outlet Invert (on metal) 28.00 94.53
D/S Water Surface Elev (tail water surface) 28.00 94.84
D/S Water Surface Elev (turbulant) 28.00 94.91
Inlet Culvert Invert (on metal) 113.00 99.05
U/S Water Surface Elev 113.00 99.24
Inlet Culvert Top 113.00 105.56
U/S Headwater 114.50 99.62
U/S Thalweg (just below weir 1) 151.00 101.00
U/S Water Surface Elev (turbulent) 151.00 101.41
U/S Grade Ctrl (Thalweg) (on concrete weir 1) 152.00 101.78
U/S Water Surface Elev 152.00 102.06
U/S Grade Ctrl (Thalweg) (on concrete weir 2) 165.00 102.73
U/S Water Surface Elev 165.00 102.98
U/S Grade Ctrl (Thalweg) (on concrete weir 3) 175.50 103.11
U/S Water Surface Elev 175.50 103.34
U/S Grade Ctrl (Thalweg) (on concrete weir 4) 187.00 103.48
U/S Water Surface Elev 187.00 103.85
U/S Grade Ctrl (Thalweg) (natural grade point) 227.00 104.93
U/S Water Surface Elev 227.00 105.11

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: Minnow Trap (A) Trap Duration(h): 2.8
Channel Type: Main Channel (>50% of water flow)
 
Gear Type: Minnow Trap (B) Trap Duration(h): 2.8

Fish Observations

Species: Dolly Varden Life History: Unknown
Total Fish Observed: 13 Fish Measured: 13 Fork Lengths (mm) Min: 90 Max: 1050 Mean: 670
Collected/Observed by Gear Type: Upstream Minnow Trap (11)  Downstream Minnow Trap (2)  

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