Fish Passage Site 20504062

Coordinates (dec. deg.): 62.08750°, -150.55610°
Legal Description: S023N007W16
Region: South Central
Road Name: Oil Well Road

Datum: WGS84
Quad Name / ITM: Talkeetna A-2
AWC Stream #: 247-41-10200-2081-3123-4015
Stream Name: Unnamed

Elevation:

Site Comments: None

Survey Date: Oct 05, 2023

Survey MSB23-MS087

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

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: Yes

Step Pools: No
Construction Year:


Site Observations:

  1. None of this type

Comments: Inlet has old plywood knocked over at outlet and black vegetation cloth at outlet.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Green
 
Length(ft): 40.24
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 3
Approach Angle: 30.0
Sedimentation At Inlet: No
Inlet Substrate: Organic
Outlet Substrate: Organic
InletOutlet
Width(ft):3.6 3.9
Height(ft):3.5 2.8
Apron Length(ft):
Water Depth(ft):0.0 0.44
Rustline Height(ft):2.6
Substrate Depth(ft):0.0 0.8
Backwatered?: Yes
Baffles Present: No
Embedded?: No
Embedded Depth(ft): 0.0
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 0.77
Culvert Gradient: 0.93%
Max Slope:
Max Slope Length:
 

Comments: Inlet has short stream that is fed by a small waterfall from pond.
  Culvert Observations:
  1. None of this type

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:OrganicOrganic
Subdominant:Silt/ClaySilt/Clay
Stream Slope(deg.):0.33
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 58.0 4.70
Downstream ordinary high water 70.0 5.00
Downstream ordinary high water 99.0 4.20

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Thalweg 0.00 92.12
D/S Water Surface Elev 0.00 93.78
D/S Water Surface Elev 49.00 93.79
D/S Thalweg 49.00 92.22
D/S Water Surface Elev 101.00 94.19
Outlet Culvert Top 101.00 96.63
Outlet Invert 101.00 93.75
Inlet Culvert Top 141.24 97.01
U/S Water Surface Elev 141.24 94.21
Inlet Culvert Invert 141.24 93.53
U/S Thalweg 165.24 93.68
U/S Water Surface Elev 165.24 94.33
U/S Thalweg 169.24 95.82
U/S Water Surface Elev 169.24 96.40

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