Fish Passage Site 20501497

Coordinates (dec. deg.): 62.53714°, -150.84134°
Legal Description: S028N008W07
Region: South Central
Road Name: Petersville Road

Datum: WGS84
Quad Name / ITM: Talkeetna C-2
AWC Stream #:
Stream Name: Peters Creek tributary

Elevation:

Site Comments: None

Survey Date: Jun 30, 2009

Survey PRK09-PVR20

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

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Site Observations:

  1. Outfall height red
  2. Constriction ratio red
  3. Culvert gradient red

Comments: ***Updated site photos from 9/8/16 site visit from Sampling Unmapped Streams in the MSB project. Fish sampling information entered into AFFI *** Sixty feet upstream is a 1' steep cascade/waterfall into large pool - probably a natural barrier.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 30.7
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 3
Approach Angle: 30.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):1.5 1.5
Height(ft):1.5 1.5
Apron Length(ft):
Water Depth(ft): 0.07
Rustline Height(ft):0.9
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.97
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.4
Culvert Gradient: 3.39%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Outfall height red
  2. Constriction ratio red
  3. Culvert gradient red

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:Silt/ClaySand
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 30.0 2.50
Upstream ordinary high water 80.0 3.00
Upstream ordinary high water 135.0 2.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Outlet Pool Water Elev 1 97.53
U/S Headwater 1 99.62
D/S Grade Ctrl (Thalweg) 1 0.00 26.0 96.29
D/S Water Surface Elev (ws @ GP) 1 0.00 26.0 96.45
D/S Water Surface Elev (WS @ GP) 1 19.00 7.0 99.72
D/S Water Surface Elev (ws @ TWC) 1 19.50 6.5 97.52
D/S Tailcrest or 1st Thalweg 1 19.50 6.5 97.35
D/S Thalweg (bottom of out pool) 1 24.30 1.7 96.54
D/S Thalweg (stream bed @ end of pipe) 1 26.00 0.0 97.44
Outlet Invert 1 26.00 0.0 98.43
Road Elev 1 41.00 104.03
Inlet Culvert Invert 1 56.00 0.0 99.47
U/S Grade Ctrl (Thalweg) (1st GP u/s) 1 63.00 7.0 99.60

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

Species: juvenile Dolly Varden Life History: Unknown
Total Fish Observed: 1 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type:

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