Fish Passage Site 20401296

Coordinates (dec. deg.): 61.52290°, -149.57120°
Legal Description: S017N002W35
Region: South Central
Road Name: Cardiff Road

Datum: NAD83
Quad Name / ITM: Anchorage C-7
AWC Stream #:
Stream Name: Lucy Creek tributary

Elevation:

Site Comments: CAR01 is upstream from this site.

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-CAR02

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

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: No

Step Pools: No
Construction Year: 2004


Site Observations:

  1. Material inadequate for designed use
  2. Compound gradient in pipe
  3. Culvert is poorly aligned

Comments: Post-replacement survey of MSCS1CT147; pipe probably set to embed, but outlet has scoured out.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Green
 
Length(ft): 65.8
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 4
Approach Angle: 52.0
Sedimentation At Inlet: No
Inlet Substrate: Gravel
Outlet Substrate: Sand
InletOutlet
Width(ft):4.4 4.4
Height(ft):3.6 4.4
Apron Length(ft):
Water Depth(ft): 1.11
Rustline Height(ft):0.6
Substrate Depth(ft):0.9 0.1
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.91
Culvert Gradient: 0.38%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. None of this type
  2. Compound gradient in pipe
  3. Culvert is poorly aligned

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:SandSand
Subdominant:GravelGravel
Stream Slope(deg.):0.76
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 82.0 6.00
Upstream ordinary high water 183.0 4.50
Upstream ordinary high water 240.0 4.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Outlet Pool Water Elev 1 96.61
U/S Headwater 1 96.92
D/S Grade Ctrl (Thalweg) 1 0.00 83.0 94.62
D/S Water Surface Elev (@GP) 1 0.00 83.0 95.10
D/S Tailcrest or 1st Thalweg 1 77.00 6.0 96.06
D/S Water Surface Elev (@TWC) 1 77.00 6.0 96.61
D/S Thalweg (bottom of outlet pool) 1 80.00 3.0 95.74
Outlet Culvert Top (Top of pipe at outlet) 1 83.00 0.0 99.99
Outlet Invert 1 83.00 0.0 95.50
Road Elev 1 115.90 101.57
Inlet Culvert Top (Top of pipe at inlet) 1 148.80 0.0 100.24
Inlet Culvert Invert 1 148.80 0.0 96.55
U/S Grade Ctrl (Thalweg) (1st TC u/s) 1 158.80 10.0 96.80
U/S Water Surface Elev (@GP) 1 158.80 10.0 97.14
U/S Water Surface Elev (u/s) 1 263.80 115.0 97.94

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)
Comments: Visual observations of adults salmonids upstream from culvert.

Fish Observations

No fish observations occurred during this survey.

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