Fish Passage Site 20501478

Coordinates (dec. deg.): 62.31664°, -150.28952°
Legal Description: S026N006W25
Region: South Central
Road Name: Petersville Road

Datum: WGS84
Quad Name / ITM: Talkeetna B-1
AWC Stream #:
Stream Name: Rabideux Creek tributary

Elevation:

Site Comments: None

Survey Date: Jun 08, 2009

Survey PRK09-PVR01

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

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Culvert gradient gray
  2. Compound gradient in pipe

Comments: Backwatered except inlet miter; TWC > inv out and TOM inlet; probably not a barrier: inlet miter is riffle over SC.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Structural steel plate) Fish Passage Rating: Gray
 
Length(ft): 74.6
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 3
Approach Angle: 26.0
Sedimentation At Inlet: Yes
Inlet Substrate: Cobble
Outlet Substrate: None
InletOutlet
Width(ft):4.9 4.9
Height(ft):4.7 5.1
Apron Length(ft):
Water Depth(ft): 1.17
Rustline Height(ft):2.6
Substrate Depth(ft):0.4 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 1.3
Culvert Gradient: 1.55%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert gradient gray
  2. Compound gradient in pipe

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:CobbleGravel
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 55.0 3.80
Upstream ordinary high water 105.0 4.50
Upstream ordinary high water 150.0 3.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Outlet Pool Water Elev 1 83.14
U/S Headwater (@ end of miter) 1 83.40
Road Elev (u/s edge of rd) 97.54
D/S Water Surface Elev (ws @ GP) 1 0.00 50.0 82.79
D/S Grade Ctrl (Thalweg) 1 0.00 50.0 82.42
D/S Tailcrest or 1st Thalweg 1 40.70 9.3 82.91
D/S Water Surface Elev (WS @ TWC) 1 40.70 9.3 83.13
Outlet Invert (end of miter; also deepest pt in out pool) 1 50.00 0.0 81.97
D/S Thalweg (invert top of miter outlet) 1 54.70 -4.7 82.00
U/S Thalweg (invert at top of miter inlet) 1 119.00 -5.0 82.55
Inlet Culvert Invert (end of miter; also TC of 1st pool u/s) 1 124.00 0.0 83.13

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

No fish sampling occurred during this survey.

Fish Observations

No fish observations occurred during this survey.

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