Fish Passage Site 20501379

Coordinates (dec. deg.): 62.91069°, -149.71436°
Legal Description: S033N002W31
Region: South Central
Road Name: Parks Highway

Datum: NAD83
Quad Name / ITM: Talkeetna Mts D-6
AWC Stream #:
Stream Name: Pass Creek

Elevation:

Site Comments: Chulitna 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 MSB11-PRK13

Project Supervisor: Gillian O'Doherty, Alaska Department of Fish and Game — Anchorage, AK
Observers: Abraham Gioffre, Jim Latham

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Constriction ratio gray
  2. Inlet perch
  3. Hydraulic flows exceeded capacity

Comments: Two uniform circular pipes with concrete footers. Outlet pool is deep.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Structural steel plate) Fish Passage Rating: Gray
 
Length(ft): 93.0
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 6.0
Condition Rating(1-5): 3
Approach Angle: 34.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):7.7 7.7
Height(ft):8.5 8.3
Apron Length(ft):0.0 0.0
Water Depth(ft): 1.88
Rustline Height(ft):6.5
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.5
Culvert Gradient: 0.53%
Max Slope:
Max Slope Length:
 

Comments: Length is total length of pipe and each miter is 8' long.
  Culvert Observations:
  1. Constriction ratio gray
  2. Inlet perch
ID: 2 Structure Type: Circular pipe (Structural steel plate) Fish Passage Rating: Gray
 
Length(ft): 93.0
Inlet Type: Mitered
Outlet Type: Mitered
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 6.0
Condition Rating(1-5): 3
Approach Angle: 34.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):7.7 7.7
Height(ft):8.5 8.3
Apron Length(ft):0.0 0.0
Water Depth(ft): 1.92
Rustline Height(ft):6.5
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.5
Culvert Gradient: 0.52%
Max Slope:
Max Slope Length:
 

Comments: Length is total to the end of pipe and each miter length was 8'.
  Culvert Observations:
  1. Constriction ratio gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:Silt/ClaySilt/Clay
Stream Slope(deg.):0.08
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 128.0 26.00
Upstream ordinary high water 187.0 21.00
Upstream ordinary high water 300.0 24.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Grade Ctrl (Thalweg) (GP at bottom of riffle) 0.00 84.26
D/S Water Surface Elev 0.00 87.24
D/S Tailcrest or 1st Thalweg (Tailwater control) 36.00 86.84
D/S Water Surface Elev 36.00 87.87
D/S Water Surface Elev 1 114.00 87.88
D/S Water Surface Elev 2 114.00 87.89
D/S Thalweg (elevation of bottom of pipe at end of miter) 1 114.00 86.00
D/S Thalweg (elevation of bottom of pipe at end of miter) 2 114.00 86.02
Outlet Invert (outlet invert on pipe) 1 122.00 86.02
Outlet Invert (invert on pipe) 2 122.00 85.97
D/S Water Surface Elev (outlet water surface) 2 122.00 87.89
D/S Water Surface Elev (outlet water surface) 1 122.00 87.90
Outlet Culvert Top 2 122.00 94.60
Outlet Culvert Top 1 122.00 94.68
Road Elev 157.00 100.00
Inlet Culvert Top 2 199.00 95.16
Inlet Culvert Top 1 199.00 95.22
U/S Water Surface Elev (riffle runs into pipe inlet) 1 199.00 87.94
U/S Water Surface Elev (inlet water surface) 2 199.00 88.00
Inlet Culvert Invert 2 199.00 86.37
Inlet Culvert Invert (invert on pipe) 1 199.00 86.43
U/S Thalweg (bottom of pipe at end of miter) 2 207.00 86.62
U/S Thalweg (bottom of pipe at end of miter) 1 207.00 86.41
U/S Water Surface Elev 2 207.00 88.20
U/S Water Surface Elev 1 207.00 87.80
U/S Grade Ctrl (Thalweg) (GP at base of glide) 223.00 87.50
U/S Water Surface Elev (water surface for stream grad) 234.00 88.71
U/S Water Surface Elev 499.00 88.98

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