Fish Passage Site 20401043

Coordinates (dec. deg.): 61.62429°, -149.39455°
Legal Description: S018N001W26
Region: South Central
Road Name: Black Bear Drive

Datum: NAD83
Quad Name / ITM: Anchorage C-7
AWC Stream #:
Stream Name: Unnamed

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 MSB04-ML017

Observers: Gary Greenberg, I S

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Site Observations:

  1. Culvert gradient red
  2. Outfall height red

Comments: Updated photos added from 9/26/16 site visit for Sampling Unmapped Streams in the MSB project. No fish captured.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated Metal) Fish Passage Rating: Red
 
Length(ft): 25.5
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.):
Corrugation Width(in.): 0.0
Condition Rating(1-5):
Approach Angle:
Sedimentation At Inlet:
Inlet Substrate:
Outlet Substrate:
InletOutlet
Width(ft):3.0
Height(ft):2.8
Apron Length(ft):
Water Depth(ft):0.1 0.1
Rustline Height(ft):0.9
Substrate Depth(ft):
Backwatered?:
Baffles Present: No
Embedded?: No
Outfall Height: 1.0
Outfall Type: Free Fall In To Pool
Constriction Ratio:
Culvert Gradient: 1.49%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Culvert gradient red
  2. Outfall height red

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:
Subdominant:
Stream Slope(deg.):
Stream Flow Stage:
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream bed width 150.0 3.00
Upstream ordinary high water 150.0 3.20

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
OHW Left Bank 95.25
OHW Left Bank 95.27
D/S Tailcrest or 1st Thalweg 0.00 2.3 95.19
Max Pool Depth 1.20 1.1 94.95
D/S Thalweg 1.20 1.1 94.95
Outlet Invert 1 2.30 0.0 96.75
Road Elev 14.80 102.16
Inlet Culvert Invert 1 27.30 0.0 97.13
U/S Thalweg 1 33.30 6.0 96.79

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