Fish Passage Site 20503483

Coordinates (dec. deg.): 61.32535°, -150.85535°
Legal Description: S014N009W03
Region: South Central
Road Name: Beluga Highway

Datum: NAD83
Quad Name / ITM: Tyonek B-3
AWC Stream #:
Stream Name: Unnamed Tributary to Lewis River

Elevation:

Site Comments: None

Survey Date: Apr 28, 2016

Survey UPDATE-BEL13

Project Supervisor: Gillian O'Doherty, ADFG
Observers: Mark Eisenman, Robert Pype

Overall Fish Passage Rating: Red

Tidal:
Backwatered:

Step Pools:
Construction Year:


Site Observations:

  1. Constriction ratio red
  2. Inlet perch
  3. Beaver Activity
  4. Structural Problem
  5. Mechanical damage or joints parting

Comments: Old beaver pond upstream. Nice gravels downstream, lots of pools.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 40.0
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5): 2
Approach Angle: 0.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):2.9 3.0
Height(ft):2.5 3.05
Apron Length(ft):
Water Depth(ft): 0.54
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: 0.42
Culvert Gradient: 0.43%
Max Slope:
Max Slope Length:
 

Comments: Culvert invert bent up and creating an inlet perch.

  Culvert Observations:
  1. Constriction ratio red
  2. Inlet perch
  3. Beaver Activity
  4. Structural Problem
  5. Mechanical damage or joints parting

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:
Subdominant:
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)
Stream
Width (ft)
Downstream ordinary high water 30.0 6.40
Downstream ordinary high water 50.0 6.60
Downstream ordinary high water 100.0 7.50

Elevations

Locator ID Culvert
Number
River
Distance (ft)1
Distance From
Crossing (ft)2
Relative
Elevation (ft)
Road Elev 98.40
Outlet Invert (On pipe) 0.00 94.01
D/S Water Surface Elev 0.00 94.55
Outlet Culvert Top 0.00 97.07
Inlet Culvert Invert (Damaged, bent up) 40.00 94.81
U/S Water Surface Elev 40.00 95.09
Inlet Culvert Top 40.00 97.24

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): 24.0
Comments: Trap set about 40 feet downstream of inlet

Fish Observations

Species: adult ninespine stickleback Life History: Unknown
Total Fish Observed: 2 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Downstream Minnow Trap (2)  
 
Species: adult threespine stickleback Life History: Unknown
Total Fish Observed: 2 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Downstream Minnow Trap (2)  

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