Fish Passage Site 20501402

Coordinates (dec. deg.): 62.33683°, -150.56422°
Legal Description: S026N007W15
Region: South Central
Road Name: Petersville Road

Datum: NAD83
Quad Name / ITM: Talkeetna B-2
AWC Stream #: 247-41-10200-2081-3194-4016
Stream Name: Seventeen Mile Creek tributary

Elevation:

Site Comments: SUSITNA RIVER WATERSHED

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-PVR10

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. Constriction ratio red
  2. Outfall height red
  3. Culvert gradient red
  4. Mechanical damage or joints parting
  5. Hydraulic flows exceeded capacity
  6. Road bank erosion

Comments: Resurvey of PRK041A039; inlet torn and bent, outlet rusted and mossy. Water leaks out thru holes in bottom

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 61.0
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 2
Approach Angle: 7.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):2.6 3.0
Height(ft):2.7 3.1
Apron Length(ft):
Water Depth(ft): 0.08
Rustline Height(ft):2.1
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 1.85
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.23
Culvert Gradient: 3.13%
Max Slope:
Max Slope Length:
 

Comments: Beaver gate at inlet.
  Culvert Observations:
  1. Constriction ratio red
  2. Outfall height red
  3. Culvert gradient red
  4. Mechanical damage or joints parting
  5. Hydraulic flows exceeded capacity
  6. Road bank erosion

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClaySand
Subdominant:Silt/ClayGravel
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 100.0 10.50
Upstream ordinary high water 160.0 12.50
Upstream ordinary high water 190.0 11.50

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Outlet Pool Water Elev 1 93.64
U/S Headwater 1 97.60
D/S Grade Ctrl (Thalweg) 1 0.00 40.0 92.23
D/S Water Surface Elev (ws @ GP) 1 0.00 40.0 92.39
D/S Tailcrest or 1st Thalweg 1 26.00 14.0 93.38
D/S Water Surface Elev 1 26.00 14.0 93.65
D/S Thalweg (bottom of out pool) 1 34.40 5.6 91.54
D/S Water Surface Elev (ws @ GP) 1 37.80 2.2 97.89
Outlet Invert 1 40.00 0.0 95.41
D/S Thalweg (stream bed end of pipe) 1 40.00 0.0 93.40
Road Elev 1 70.50 109.53
Inlet Culvert Invert 1 101.00 0.0 97.32
U/S Grade Ctrl (Thalweg) 1 103.20 2.2 97.72

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.

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