Fish Passage Site 20401171

Coordinates (dec. deg.): 61.71059°, -149.09010°
Legal Description: S019N002E28
Region: South Central
Road Name: Buffalo Mine Road

Datum: WGS84
Quad Name / ITM: Anchorage C-6
AWC Stream #: 247-50-10220-2085-3047
Stream Name: Premier 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 MSB09-BMR03

Project Supervisor: Gillian O'Doherty, ADFG
Observers: Heidi Zimmer, Ben Histand

Overall Fish Passage Rating: Red

Tidal: No
Backwatered: No

Step Pools:
Construction Year:


Site Observations:

  1. Outfall height red
  2. Culvert gradient red
  3. Constriction ratio gray

Comments: Non-uniform rust (diagram on data sheet). Photos and electrofishing capture data from 9/6/16 site visit for Sampling Unmapped Streams in the MSB.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Structural steel plate) Fish Passage Rating: Red
 
Length(ft): 30.7
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 0.5
Corrugation Width(in.): 2.67
Condition Rating(1-5): 3
Approach Angle: 18.0
Sedimentation At Inlet: No
Inlet Substrate: None
Outlet Substrate: None
InletOutlet
Width(ft):4.0 4.0
Height(ft):4.0 3.7
Apron Length(ft):
Water Depth(ft): 0.3
Rustline Height(ft):
Substrate Depth(ft):0.0 0.0
Backwatered?: No
Baffles Present: No
Embedded?: No
Outfall Height: 1.32
Outfall Type: Free Fall In To Pool
Constriction Ratio: 0.55
Culvert Gradient: 3.75%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. Outfall height red
  2. Culvert gradient red
  3. Constriction ratio gray

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleCobble
Subdominant:GravelCobble
Stream Slope(deg.):
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 50.0 7.00
Upstream ordinary high water 95.0 7.50
Upstream ordinary high water 160.0 9.50

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
Outlet Pool Water Elev 1 93.29
U/S Headwater 1 95.95
D/S Grade Ctrl (Thalweg) (TC of pool below TWC) 1 0.00 19.0 91.63
D/S Water Surface Elev (@GP) 1 0.00 19.0 92.12
D/S Tailcrest or 1st Thalweg 1 9.00 10.0 92.79
D/S Water Surface Elev (@TWC) 1 9.00 10.0 93.26
D/S Thalweg (bottom of pool) 1 13.00 6.0 91.71
D/S Thalweg (bottom of plunge) 1 17.00 2.0 92.15
Outlet Invert 1 19.00 0.0 94.31
Road Elev 1 34.00 101.80
Inlet Culvert Invert 1 39.70 0.0 95.46
U/S Grade Ctrl (Thalweg) (TC of 1st pool u/s) 1 71.70 32.0 97.88
U/S Water Surface Elev (@GP) 1 71.70 32.0 98.24

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

Gear Type: Minnow Trap (A) Trap Duration(h): 1.0
Comments: no fish caught; 60ft u/s
 
Gear Type: Minnow Trap (B) Trap Duration(h): 1.0
Comments: no fish caught; 70ft d/s

Fish Observations

No fish observations occurred during this survey.

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