Fish Passage Site 20501473

Coordinates (dec. deg.): 62.18156°, -150.51703°
Legal Description: S024N007W11
Region: South Central
Road Name: Oil Well Road

Datum: WGS84
Quad Name / ITM: Talkeetna A-2
AWC Stream #:
Stream Name: Unnamed

Elevation:

Site Comments: None

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 PRK09-OWR02

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

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Outfall height red
  2. Culvert gradient red
  3. Constriction ratio red
  4. Compound gradient in pipe

Comments: Pipe appears to be steel coated in black plastic; upper 1/2 of pipe is prob steeper than 6.91%.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated plastic) Fish Passage Rating: Red
 
Length(ft): 60.6
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 2
Approach Angle: 87.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):4.1 3.6
Height(ft):3.9 4.0
Apron Length(ft):
Water Depth(ft): 0.1
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 1.87
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.33
Culvert Gradient: 6.91%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Outfall height red
  2. Culvert gradient red
  3. Constriction ratio red
  4. Compound gradient in pipe

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:GravelCobble
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 138.0 11.00
Upstream ordinary high water 165.0 12.00
Upstream ordinary high water 200.0 9.50

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Outlet Pool Water Elev 1 90.17
U/S Headwater 1 96.25
D/S Grade Ctrl (Thalweg) 1 0.00 31.0 89.43
D/S Water Surface Elev (WS @ GP) 1 0.00 31.0 89.52
D/S Tailcrest or 1st Thalweg 1 12.00 19.0 90.04
D/S Water Surface Elev (WS @ TWC) 1 12.00 19.0 90.17
D/S Thalweg 1 23.00 8.0 87.46
Outlet Invert 1 31.00 0.0 91.94
D/S Thalweg (streambed end of pipe) 1 31.00 0.0 89.45
Road Elev 1 61.00 106.26
U/S Thalweg (pool imm u/s inlet/streambed end of pipe) 1 91.00 0.0 95.75
Inlet Culvert Invert 1 91.00 0.0 96.13

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

Gear Type: Minnow Trap (A) Trap Duration(h): 1.0
Comments: no fish caught; 150ft u/s
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.0
Comments: 300ft d/s

Fish Observations

Species: stickleback-unspecified Life History: Resident
Total Fish Observed: 16 Fish Measured: Fork Lengths (mm) Min: Max: Mean:
Collected/Observed by Gear Type: Downstream Minnow Trap (16)  

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