Fish Passage Site 20501404

Coordinates (dec. deg.): 62.23803°, -150.43974°
Legal Description: S025N006W20
Region: South Central
Road Name: Oil Well Road

Datum: NAD83
Quad Name / ITM: Talkeetna A-1
AWC Stream #:
Stream Name: Moose 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-OWR06

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. Outfall height gray
  2. Constriction ratio red
  3. Mechanical damage or joints parting
  4. Culvert sagging in middle

Comments: Resurvey PRK041A041. Bottom of pipe is rusted/disintegrating. No pipe inverts at ends, so invert elevs 2.5' inside pipe

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 44.1
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 1
Approach Angle: 0.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):4.0 3.9
Height(ft):3.9 4.0
Apron Length(ft):
Water Depth(ft): 0.06
Rustline Height(ft):1.4
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 0.23
Outfall Type: Cascade Over Rip-Rap
Constriction Ratio: 0.38
Culvert Gradient: 0.15%
Max Slope:
Max Slope Length:
 

Comments: Site is no longer backwatered. Culvert has rusted out and water is running through holes in the bottom of the culvert.
  Culvert Observations:
  1. Outfall height gray
  2. Constriction ratio red
  3. Mechanical damage or joints parting
  4. Culvert sagging in middle

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:Silt/ClayGravel
Subdominant:Silt/ClayGravel
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 140.0 11.00
Upstream ordinary high water 180.0 9.50
Upstream ordinary high water 220.0 10.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Outlet Pool Water Elev 1 95.60
U/S Headwater 1 96.15
D/S Grade Ctrl (Thalweg) 1 0.00 51.0 94.81
D/S Water Surface Elev (WS @ GP) 1 0.00 51.0 94.86
D/S Tailcrest or 1st Thalweg 1 25.00 26.0 95.50
D/S Water Surface Elev (WS @ TWC) 1 25.00 26.0 95.60
D/S Thalweg (bottom of out pool) 1 38.50 12.5 93.08
D/S Thalweg (streambed end of pipe--invert rusted away) 1 51.00 0.0 94.39
Outlet Invert (calculated from top of pipe) 1 51.00 0.0 95.77
Outlet Culvert Top (top of pipe 2.3' from outlet end of pipe) 1 53.30 -2.3 99.77
Road Elev 1 73.00 103.55
Inlet Culvert Invert (calculated from top of pipe) 1 92.50 -2.5 95.83
Inlet Culvert Top (top of pipe 2.5' from inlet end of pipe) 1 92.50 -2.5 99.78
U/S Thalweg (streambed end of pipe--invert rusted away) 1 95.00 0.0 95.67
U/S Grade Ctrl (Thalweg) (WS same as headwater) 1 96.00 1.0 95.82

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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