Fish Passage Site 20501115

Coordinates (dec. deg.): 62.48607°, -150.76566°
Legal Description: S028N008W28
Region: South Central
Road Name: Horseshoe Lake Road

Datum: NAD83
Quad Name / ITM: Talkeetna B-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 MSB23-MS092

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

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: Yes

Step Pools: No
Construction Year:


Site Observations:

  1. Inlet perch
  2. Mechanical damage or joints parting
  3. Road Fill (pushed off road by grader)
  4. Culvert gradient red

Comments: Landowner stated that they have never seen fish in streams.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 24.3
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: No
Inlet Substrate: Organic
Outlet Substrate: Sand
InletOutlet
Width(ft):1.5 2.0
Height(ft):2.1 2.0
Apron Length(ft):
Water Depth(ft):0.0 0.0
Rustline Height(ft):1.3
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Embedded Depth(ft): 0.0
Outfall Height:
Outfall Type:
Constriction Ratio: -2.72
Culvert Gradient: -2.72%
Max Slope:
Max Slope Length:
 

Comments: No flow at outlet #1. Inlet #1 has damaged/ bent entry.
  Culvert Observations:
  1. Inlet perch
  2. Mechanical damage or joints parting
  3. Road Fill (pushed off road by grader)
  4. Culvert gradient red
ID: 2 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 26.0
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5): 2
Approach Angle: 0.0
Sedimentation At Inlet: No
Inlet Substrate: Organic
Outlet Substrate: Sand
InletOutlet
Width(ft):1.1 1.6
Height(ft):2.1 1.9
Apron Length(ft):
Water Depth(ft):0.0 1.25
Rustline Height(ft):
Substrate Depth(ft):0.0 0.2
Backwatered?: No
Baffles Present: No
Embedded?: No
Embedded Depth(ft): 0.0
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.0
Culvert Gradient: -1.41%
Max Slope:
Max Slope Length:
 

Comments: Culvert #2 outlet and inlet entry is severly damaged/bent; however, still has significant flow. Culvert #2 inlet rustline is 100%, the whole culvert is rusted throughout.
  Culvert Observations:
  1. Inlet perch
  2. Mechanical damage or joints parting
  3. Road Fill (pushed off road by grader)
  4. Culvert gradient red
ID: 3 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 25.9
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 3.0
Condition Rating(1-5): 2
Approach Angle: 0.0
Sedimentation At Inlet: No
Inlet Substrate: Organic
Outlet Substrate: Sand
InletOutlet
Width(ft):2.7 2.5
Height(ft):2.17 2.1
Apron Length(ft):
Water Depth(ft):0.0 1.47
Rustline Height(ft):2.3
Substrate Depth(ft):0.0 0.2
Backwatered?: Yes
Baffles Present: No
Embedded?: No
Embedded Depth(ft): 0.0
Outfall Height:
Outfall Type: At Stream Grade
Constriction Ratio:
Culvert Gradient: -1.51%
Max Slope:
Max Slope Length:
 

Comments: Culvert#3 outlet is torn apart, severely damaged; however, still has significant flow.
  Culvert Observations:
  1. Inlet perch
  2. Mechanical damage or joints parting
  3. Road Fill (pushed off road by grader)
  4. Culvert gradient red
ID: 4 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Black
 
Length(ft):
Inlet Type: Projecting
Outlet Type:
Corrugation Depth(in.):
Corrugation Width(in.):
Condition Rating(1-5): 1
Approach Angle:
Sedimentation At Inlet: No
Inlet Substrate: Organic
Outlet Substrate: Sand
InletOutlet
Width(ft):1.9
Height(ft):1.5
Apron Length(ft):
Water Depth(ft):
Rustline Height(ft):
Substrate Depth(ft):0.6
Backwatered?: Yes
Baffles Present: No
Embedded?: Unknown
Outfall Height:
Outfall Type:
Constriction Ratio:
Culvert Gradient:
Max Slope:
Max Slope Length:
 

Comments: Rated as black due to outlet being buried and unable to find. It is evident from the inlet side, that the culvert is rusted throughout. Inlet for culvert #4 is damaged and bent severely.

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:OrganicGravel
Subdominant:Silt/ClayOrganic
Stream Slope(deg.):
Stream Flow Stage:High

No stream width data available.

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg 25.00 96.27
D/S Water Surface Elev 25.00 96.84
U/S Water Surface Elev 30.00 96.86
Top of Pipe Inlet ((-0.3)) 2 30.00 97.36
Inlet Culvert Top 4 30.00 97.45
U/S Water Surface Elev (Culvert water surface) 1 30.00 96.88
U/S Water Surface Elev 3 30.00 96.88
U/S Water Surface Elev 4 30.00 96.88
D/S Water Surface Elev 30.00 96.40
Inlet Culvert Invert 1 30.00 96.41
U/S Water Surface Elev 2 30.00 96.84
Inlet Culvert Invert 2 30.00 95.26
Inlet Culvert Invert 3 30.00 95.42
Inlet Culvert Invert 4 30.00 95.60
Inlet Culvert Top ((-0.5)) 3 30.00 97.93
Inlet Culvert Top ((-0.8)) 1 30.00 98.43
Outlet Culvert Top 1 54.30 99.07
Outlet Invert 1 54.30 97.06
Outlet Culvert Top 3 55.90 98.29
Outlet Invert 3 55.90 95.40
D/S Water Surface Elev 3 55.90 96.87
Outlet Culvert Top ((-0.5)) 2 56.00 97.70
D/S Water Surface Elev (Culvert water surface) 2 56.00 96.89
Outlet Invert 2 56.00 95.64

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