Fish Passage Site 20501498

Coordinates (dec. deg.): 62.53489°, -150.82375°
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-PVR21

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. Inlet perch
  2. Constriction ratio gray
  3. Culvert gradient red
  4. Compound gradient in pipe
  5. Mechanical damage or joints parting

Comments: **Updated Site photos and fish sampling information added from 9/8/16 site visit from Sampling Unmapped Streams in the MSB project. Coho salmon captured up to culvert outlet, only Dolly Varden char captured upstream of crossing. Dolly Varden char also captured upstream at site 20501497. ** Pipe is 2 halves (top and bottom) fastened together w/big staples(?) Top bent down at outlet & splitting across top.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 23.3
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 3
Approach Angle: 38.0
Sedimentation At Inlet: No
Inlet Substrate: Gravel
Outlet Substrate: Gravel
InletOutlet
Width(ft):4.2 4.6
Height(ft):3.7 3.7
Apron Length(ft):
Water Depth(ft): 1.31
Rustline Height(ft):2.1
Substrate Depth(ft):0.4 0.1
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.68
Culvert Gradient: 3.86%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Inlet perch
  2. Constriction ratio gray
  3. Culvert gradient red
  4. Compound gradient in pipe
  5. Mechanical damage or joints parting

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleCobble
Subdominant:GravelCobble
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 70.0 6.50
Upstream ordinary high water 120.0 7.00
Upstream ordinary high water 155.0 5.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Outlet Pool Water Elev 1 99.68
U/S Headwater 1 100.58
D/S Grade Ctrl (Thalweg) 1 0.00 27.0 98.59
D/S Water Surface Elev 1 0.00 27.0 98.85
D/S Tailcrest or 1st Thalweg 1 17.00 10.0 99.32
D/S Water Surface Elev (WS @ TWC) 1 17.00 10.0 99.68
D/S Water Surface Elev 1 18.00 9.0 102.27
D/S Thalweg (bottom of out pool) 1 23.00 4.0 98.36
D/S Thalweg (stream bed @ end of pipe (invert inaccessible due to fill)) 1 25.00 2.0 98.37
Road Elev 1 38.50 106.68
Inlet Culvert Invert 1 50.00 0.0 100.21
U/S Thalweg (bottom of inlet perch) 1 51.50 1.5 100.34
U/S Thalweg (top of inlet perch) 1 52.50 2.5 101.37
U/S Grade Ctrl (Thalweg) 1 59.00 9.0 102.17

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): 1.25
Comments: 150ft u/s
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.25
Comments: no fish caught; 120ft d/s

Fish Observations

Species: juvenile/adult Dolly Varden Life History: Unknown
Total Fish Observed: 1 Fish Measured: 1 Fork Lengths (mm) Min: 55 Max: 55 Mean: 55
Collected/Observed by Gear Type: Downstream Minnow Trap (1)  

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