Fish Passage Site 20502149

Coordinates (dec. deg.): 62.34004°, -150.24846°
Legal Description: S026N005W17
Region: South Central
Road Name: Parks Highway

Datum: NAD83
Quad Name / ITM: Talkeetna B-1
AWC Stream #:
Stream Name: Chulitna River tributary

Elevation:

Site Comments: Culvert is at apporx MP 116.6.

Survey Date: Oct 27, 2011

Survey MSB11-PRK116

Project Supervisor: Gillian O'Doherty, Alaska Department of Fish and Game — Anchorage, AK
Observers: Gillian O'Doherty, Mark Eisenman

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Culvert gradient gray

Comments: Indeterminate channel U/S, small channel downstream. ATV trail runs through creek D/S. Stream eventually enters meadow/marsh area downstream and joins up with creek crossing at PRK117. Creek runs fairly flat with few to no grade points downstream from crossing. No fish trapping due to cold temps.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 100.5
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.5
Condition Rating(1-5): 3
Approach Angle:
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):4.0 4.1
Height(ft):4.0 3.9
Apron Length(ft):
Water Depth(ft): 0.42
Rustline Height(ft):1.1
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type: At Stream Grade
Constriction Ratio: 1.18
Culvert Gradient: 0.83%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert gradient gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:OrganicOrganic
Subdominant:Silt/ClaySilt/Clay
Stream Slope(deg.):
Stream Flow Stage:Medium

No stream width data available.

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 102.03
D/S Grade Ctrl (Thalweg) (Log debris dam) 0.00 90.35
D/S Water Surface Elev 0.00 90.62
D/S Grade Ctrl (Thalweg) (step made by atv path) 15.00 91.28
D/S Water Surface Elev 15.00 91.65
D/S Water Surface Elev 31.00 91.75
Outlet Invert (on pipe) 31.00 91.33
Outlet Culvert Top 31.00 95.32
Inlet Culvert Top 131.50 96.15
Inlet Culvert Invert (on substrate) 131.50 92.08
U/S Water Surface Elev 131.50 92.60
U/S Water Surface Elev (headwater surface) 136.50 93.19

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