Fish Passage Site 20501222

Coordinates (dec. deg.): 61.49357°, -149.66008°
Legal Description: S016N002W08
Region: South Central
Road Name: Rubacaba Road

Datum: WGS84
Quad Name / ITM: Anchorage B-8
AWC Stream #:
Stream Name: O'Brien Creek

Elevation:

Site Comments: None

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 MSB23-MS017

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: No

Step Pools: No
Construction Year: 2023


Site Observations:

  1. None of this type

Comments: 1 Stickle back and 1 Coho spotted downstream. 3 Coho spotted upstream. Stream adjusted to headcut, has moved to the right.

Culvert Measurements

ID: 1 Structure Type: Box culvert (Structural aluminum plate) Fish Passage Rating: Green
 
Length(ft): 54.08
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 10.0
Condition Rating(1-5): 5
Approach Angle: 51.0
Sedimentation At Inlet: No
Inlet Substrate: Sand
Outlet Substrate: Sand
InletOutlet
Width(ft):15.0 15.0
Height(ft):6.0 6.0
Apron Length(ft):
Water Depth(ft):0.0 1.26
Rustline Height(ft):
Substrate Depth(ft):0.8 1.2
Backwatered?: No
Baffles Present: No
Embedded?: Yes
Embedded Depth(ft): 1.2
Outfall Height:
Outfall Type: At Stream Grade
Constriction Ratio: 1.55
Culvert Gradient: 0.48%
Max Slope:
Max Slope Length:
 

Comments: No rustline.
  Culvert Observations:
  1. None of this type

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:SandSand
Subdominant:OrganicOrganic
Stream Slope(deg.):0.17
Stream Flow Stage:Low
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Downstream ordinary high water 45.0 10.50
Downstream ordinary high water 100.0 9.00
Downstream ordinary high water 120.0 9.60

Elevations

No elevation data available.

Fish Sampling Efforts

Gear Type: Minnow Trap (A) Trap Duration(h): -26278
Channel Type: Main Channel (>50% of water flow)
Comments: 3 coho found upstream
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.8333334
Channel Type: Main Channel (>50% of water flow)
Comments: 1 coho and 1 stickleback found downstream

Fish Observations

No fish observations occurred during this survey.

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