Fish Passage Site 20501490

Coordinates (dec. deg.): 62.47888°, -150.74772°
Legal Description: S028N008W34
Region: South Central
Road Name: Petersville Road

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

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 MSB23-MS084

Project Supervisor: Michael Mazzacavallo, Alaska Department of Fish and Game — Anchorage, AK
Observers: Michael Mazzacavallo, Kat Leavitt, Beth Evers

Overall Fish Passage Rating: Red

Tidal:
Backwatered:

Step Pools:
Construction Year:


Site Observations:

  1. Culvert gradient red
  2. Outfall height red
  3. Woody Debris
  4. Culvert sagging in middle

Comments: None

Culvert Measurements

ID: 1 Structure Type: Pipe-arch (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft):
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5): 1
Approach Angle: 0.0
Sedimentation At Inlet: Yes
Inlet Substrate: Sand
Outlet Substrate: Gravel
InletOutlet
Width(ft):2.9 1.95
Height(ft):1.48 1.94
Apron Length(ft):
Water Depth(ft):0.0 0.0
Rustline Height(ft):0.0
Substrate Depth(ft):0.3 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Embedded Depth(ft): 0.0
Outfall Height: 0.0
Outfall Type: Overflow Pipe
Constriction Ratio:
Culvert Gradient:
Max Slope:
Max Slope Length:
 

Comments: Culvert #1 was dry, warped, and collapsed, no length measurement was taken. The pipe was warped for culvert #1 and culvert #4, unable to calculate culvert gradient. Would have outfall height If water was flowing through culvert gradient.
  Culvert Observations:
  1. Culvert gradient red
  2. Outfall height red
  3. Woody Debris
  4. Culvert sagging in middle
ID: 2 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 48.0
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5): 4
Approach Angle: 0.0
Sedimentation At Inlet: Yes
Inlet Substrate: Sand
Outlet Substrate: Gravel
InletOutlet
Width(ft):3.42 3.56
Height(ft):3.26 3.39
Apron Length(ft):
Water Depth(ft):0.0 0.29
Rustline Height(ft):0.0
Substrate Depth(ft):0.3 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Embedded Depth(ft): 0.0
Outfall Height: 1.09
Outfall Type: Free Fall In To Pool
Constriction Ratio:
Culvert Gradient:
Max Slope:
Max Slope Length:
 

Comments: Culvert #2 is the primary culvert.
  Culvert Observations:
  1. Culvert gradient red
  2. Outfall height red
  3. Woody Debris
  4. Culvert sagging in middle
ID: 3 Structure Type: Pipe-arch (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 48.03
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.5
Condition Rating(1-5): 4
Approach Angle: 0.0
Sedimentation At Inlet: Yes
Inlet Substrate: Sand
Outlet Substrate: Gravel
InletOutlet
Width(ft):3.0 3.37
Height(ft):2.1 3.54
Apron Length(ft):
Water Depth(ft):0.0 0.95
Rustline Height(ft):1.8
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Embedded Depth(ft): 1.8
Outfall Height: 0.06
Outfall Type: Free Fall In To Pool
Constriction Ratio:
Culvert Gradient:
Max Slope:
Max Slope Length:
 

Comments: Debris 2.1ft high stopping water flow at inlet, only small amount of water flowing through.
  Culvert Observations:
  1. Culvert gradient red
  2. Outfall height red
  3. Woody Debris
  4. Culvert sagging in middle
ID: 4 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 48.55
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5): 4
Approach Angle: 0.0
Sedimentation At Inlet: Yes
Inlet Substrate: Sand
Outlet Substrate: Gravel
InletOutlet
Width(ft):1.85 2.09
Height(ft):2.14 2.08
Apron Length(ft):
Water Depth(ft):0.0 0.0
Rustline Height(ft):0.0
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Embedded Depth(ft): 0.0
Outfall Height: 0.0
Outfall Type: Overflow Pipe
Constriction Ratio:
Culvert Gradient:
Max Slope:
Max Slope Length:
 

Comments: Culvert is dry, filled with sand, something blocking middle of pipe. Would have outfall height if water was flowing through culvert gradient, the pipe is warped.
  Culvert Observations:
  1. Culvert gradient red
  2. Outfall height red
  3. Woody Debris
  4. Culvert sagging in middle

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:SandSand
Subdominant:GravelGravel
Stream Slope(deg.):2.39
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 43.0 8.10
Upstream ordinary high water 78.0 7.40
Upstream ordinary high water 87.0 7.20
Upstream ordinary high water 90.0 8.30

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Water Surface Elev 0.00 89.71
D/S Thalweg 0.00 89.45
D/S Thalweg 56.00 91.05
D/S Water Surface Elev 56.00 91.44
D/S Thalweg 89.00 91.54
D/S Water Surface Elev 89.00 92.17
D/S Water Surface Elev (Culvert #3 pool water surface) 3 100.00 92.21
Max Pool Depth (Culvert #3 pool thalweg) 3 100.00 91.68
D/S Water Surface Elev (Culvert #2 pool water surface) 2 100.00 92.11
Max Pool Depth (Culvert #2 pool thalweg) 2 100.00 89.49
Outlet Invert 3 103.00 92.32
Outlet Invert 2 103.00 92.91
U/S Water Surface Elev 2 103.00 93.20
D/S Water Surface Elev 3 103.00 93.27
Outlet Invert 4 103.00 95.30
Outlet Invert 1 103.00 95.31
Outlet Culvert Top 3 103.00 95.93
Outlet Culvert Top 2 103.00 96.29
Outlet Culvert Top 1 103.00 97.30
Outlet Culvert Top 4 103.00 97.35
Inlet Culvert Top 2 151.00 96.44
Inlet Culvert Top 4 151.00 97.05
Inlet Culvert Top 1 151.00 97.09
Inlet Culvert Top 3 151.00 94.59
U/S Water Surface Elev 3 151.00 94.59
U/S Water Surface Elev 2 151.00 94.61
Inlet Culvert Invert 4 151.00 94.86
Inlet Culvert Invert 1 151.00 95.25
Inlet Culvert Invert 2 151.00 93.37
Inlet Culvert Invert 3 151.00 93.91
U/S Thalweg 181.00 94.15
U/S Water Surface Elev 181.00 94.74
U/S Water Surface Elev 201.00 95.02
U/S Thalweg 201.00 93.83
U/S Thalweg 221.00 94.26
U/S Water Surface Elev 221.00 94.99

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