Fish Passage Site 20502148

Coordinates (dec. deg.): 62.61786°, -150.22438°
Legal Description: S029N005W09
Region: South Central
Road Name: Parks Highway

Datum: NAD83
Quad Name / ITM: Talkeetna C-1
AWC Stream #:
Stream Name: Chulitna River tributary

Elevation:

Site Comments: Site is at approx. MP 136.5.

Survey Date: Oct 25, 2011

Survey MSB11-PRK136

Project Supervisor: Gillian O'Doherty, Alaska Department of Fish and Game — Anchorage, AK
Observers: Mark Eisenman, Gillian O'Doherty

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools: No
Construction Year:


Site Observations:

  1. Culvert gradient red
  2. Inlet perch
  3. Compound gradient in pipe

Comments: **Updated site photos added from 9/22/16 site visit from Sampling Unmapped Streams in the MSB project. Fish samping informaiton entered in AFFI** No fish trapping due to weather and time of year. No fish observered. Small amount of sediment at inlet with small inlet perch. Wetlands upstream from culvert.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Red
 
Length(ft): 175.3
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.3
Corrugation Width(in.): 2.5
Condition Rating(1-5): 4
Approach Angle: 10.0
Sedimentation At Inlet: Yes
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):4.0 4.0
Height(ft):4.0 4.0
Apron Length(ft):
Water Depth(ft): 0.31
Rustline Height(ft):0.6
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height:
Outfall Type: At Stream Grade
Constriction Ratio: 1.41
Culvert Gradient: 2.26%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert gradient red
  2. Inlet perch
  3. Compound gradient in pipe

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:SandSand
Subdominant:GravelGravel
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 50.0 2.50
Downstream ordinary high water 110.0 2.80
Downstream ordinary high water 160.0 3.20

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Road Elev 120.57
D/S Thalweg (Downstream profile point) 0.00 94.35
D/S Water Surface Elev (Used for Stream Gradient) 0.00 95.00
D/S Thalweg (Downstream profile point) 47.00 94.88
D/S Water Surface Elev 47.00 95.29
D/S Water Surface Elev (Used for Stream gradient) 75.00 95.69
D/S Thalweg (Downstream profile point) 75.00 95.18
D/S Tailcrest or 1st Thalweg 100.00 95.93
D/S Water Surface Elev 100.00 96.23
Outlet Pool Water Elev 115.00 96.28
Max Pool Depth 115.00 95.64
Outlet Invert (Bottom of pipe) 118.00 96.01
D/S Water Surface Elev 118.00 96.32
Outlet Culvert Top 118.00 100.02
U/S Water Surface Elev 193.30 100.24
Inlet Culvert Invert (Bottom of pipe) 193.30 99.98
Inlet Culvert Top (Top of pipe) 193.30 104.03
U/S Headwater 193.80 100.39
U/S Water Surface Elev 203.30 100.44
U/S Thalweg (Upstream profile point) 203.30 99.80

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