Fish Passage Site 20501081

Coordinates (dec. deg.): 61.58802°, -149.72237°
Legal Description: S017N003W01
Region: South Central
Road Name: Alaska Railroad

Datum: NAD83
Quad Name / ITM: Anchorage C-8
AWC Stream #:
Stream Name: Meadow Creek tributary

Elevation:

Site Comments: AKRR MP169.34

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 MSB09-ARR04

Project Supervisor: Gillian O'Doherty, ADFG
Observers: Gillian O'Doherty, Ben Histand

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Outfall height red
  2. Mechanical damage or joints parting

Comments: Visual observeration of Juvenile coho u/s. Culvert is adequately sized, but placed too high; rusted through at inlet and braced with railroad ties;

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 61.4
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 1.75
Corrugation Width(in.): 7.0
Condition Rating(1-5): 2
Approach Angle: 21.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):8.0 7.7
Height(ft):8.1 8.1
Apron Length(ft):
Water Depth(ft): 0.2
Rustline Height(ft):1.7
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 1.06
Outfall Type: Free Fall In To Pool
Constriction Ratio: 1.28
Culvert Gradient: 0.29%
Max Slope:
Max Slope Length:
 

Comments: Adequately sized but placed too high; rusted thru @ inlet; braced w/RR ties;
  Culvert Observations:
  1. Outfall height red
  2. Mechanical damage or joints parting

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClayGravel
Subdominant:GravelSilt/Clay
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 58.0 7.20
Downstream ordinary high water 70.0 5.10
Downstream ordinary high water 83.0 5.70

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Outlet Pool Water Elev 1 90.80
U/S Headwater (pool immed. u/s) 1 92.40
D/S Grade Ctrl (Thalweg) 1 0.00 34.0 89.56
D/S Water Surface Elev (@GP) 1 0.00 34.0 90.22
D/S Thalweg (bottom of large pool) 1 10.50 23.5 88.56
D/S Tailcrest or 1st Thalweg 1 23.00 11.0 90.62
D/S Water Surface Elev (@TWC) 1 23.00 11.0 90.70
D/S Thalweg (bottom of pool) 1 32.00 2.0 89.59
Outlet Invert 1 34.00 0.0 91.66
Road Elev 1 64.50 105.48
Inlet Culvert Invert 1 95.40 0.0 91.84
U/S Thalweg 1 102.40 7.0 90.59

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): 1.0
Comments: no fish caught; 60ft u/s
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.0
Comments: 55ft d/s

Fish Observations

Species: adult ninespine stickleback Life History: Not Recorded
Total Fish Observed: 3 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Downstream Minnow Trap (3)  
 
Species: juvenile Dolly Varden Life History: Not Recorded
Total Fish Observed: 1 Fish Measured: 1 Fork Lengths (mm) Min: 63 Max: 63 Mean: 63
Collected/Observed by Gear Type: Upstream Minnow Trap (1)  

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