Fish Passage Site 20502088

Coordinates (dec. deg.): 62.83105°, -149.63705°
Legal Description: S032N002W27
Region: South Central
Road Name: Alaska Railroad

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

Elevation:

Site Comments: Alaska Railroad MP 269.1

Survey Date: Jun 16, 2011

Survey MSB11-ARR205

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

Overall Fish Passage Rating: Gray

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Constriction ratio gray
  2. Culvert gradient gray
  3. Sediment accumulation

Comments: Alaska Railroad site at MP 269.1. No substrate in pipe and smooth glide out of pipe for approx. 50'. Long. Profile started at upstream grade point and moves downstream.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Gray
 
Length(ft): 50.5
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.75
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 15.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):5.0 5.1
Height(ft):4.9 4.85
Apron Length(ft):0.0 0.0
Water Depth(ft): 0.47
Rustline Height(ft):1.6
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: At Stream Grade
Constriction Ratio: 0.71
Culvert Gradient: 0.97%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Constriction ratio gray
  2. Culvert gradient gray
  3. Sediment accumulation

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:CobbleSand
Stream Slope(deg.):3.2
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 42.0 8.00
Upstream ordinary high water 89.0 6.20
Upstream ordinary high water 128.0 7.30

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
U/S Grade Ctrl (Thalweg) (Middle of continuous riffle) 0.00 90.93
U/S Water Surface Elev 0.00 91.37
U/S Grade Ctrl (Thalweg) (Top of riffle) 30.00 90.50
U/S Water Surface Elev 30.00 90.65
U/S Water Surface Elev (Water surface just outside inlet of pipe) 56.50 89.56
U/S Grade Ctrl (Thalweg) (Thalweg just outside inlet of pipe) 56.50 89.33
U/S Water Surface Elev (Water surface at the inlet) 57.00 89.47
Inlet Culvert Invert (On pipe) 57.00 89.18
Inlet Culvert Top 57.00 94.21
Road Elev 82.00 99.41
Outlet Culvert Top 107.50 93.61
Outlet Invert (On pipe) 107.50 88.69
D/S Water Surface Elev (Water surface at the outlet.Smooth glide downstream of outlet, no stream features.) 107.50 89.16

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