Fish Passage Site 20501224

Coordinates (dec. deg.): 61.49608°, -149.61229°
Legal Description: S016N002W10
Region: South Central
Road Name: Settler Bay Drive

Datum: NAD83
Quad Name / ITM: Anchorage B-7
AWC Stream #:
Stream Name: Crocker Creek

Elevation:

Site Comments: None

Survey Date: Aug 20, 2009

Survey MSB09-SBD01

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

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: No

Step Pools: No
Construction Year: 2007


Site Observations:

  1. None of this type

Comments: Post-replacement survey ML138 (USFW Idenitfier); stream forks at 90' upstream.

Culvert Measurements

ID: 1 Structure Type: Circular pipe (Corrugated steel) Fish Passage Rating: Green
 
Length(ft): 60.3
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 1.0
Corrugation Width(in.): 3.0
Condition Rating(1-5): 5
Approach Angle: 0.0
Sedimentation At Inlet: No
Inlet Substrate: Gravel
Outlet Substrate: Gravel
InletOutlet
Width(ft):11.4 11.4
Height(ft):7.8 7.9
Apron Length(ft):0.0 0.0
Water Depth(ft): 0.62
Rustline Height(ft):0.6
Substrate Depth(ft):3.6 3.5
Backwatered?: No
Baffles Present: No
Embedded?: Yes
Embedded Depth(ft): 3.5
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 1.22
Culvert Gradient: 2.40%
Max Slope:
Max Slope Length:
  Culvert Observations:
  1. None of this type

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:GravelGravel
Subdominant:GravelGravel
Stream Slope(deg.):2.8
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)		 Stream
Width (ft)
Upstream ordinary high water 25.0 9.00
Upstream ordinary high water 60.0 10.00
Upstream ordinary high water 87.0 9.00

Elevations

Locator ID Culvert
Number		 River
Distance (ft)1		 Distance From
Crossing (ft)2		 Relative
Elevation (ft)
D/S Water Surface Elev (water surface for stream grad) 1 0.00 88.04
D/S Thalweg (profile pt in middle of pool) 1 88.00 89.86
D/S Water Surface Elev 1 88.00 90.62
D/S Water Surface Elev 1 138.00 91.43
D/S Thalweg (resting pool) 1 138.00 90.57
D/S Thalweg (pt in continuous riffle) 1 163.00 92.11
D/S Water Surface Elev 1 163.00 92.54
D/S Water Surface Elev 1 173.00 92.73
D/S Tailcrest or 1st Thalweg (small tailwater control w rocks) 1 173.00 92.43
Outlet Pool Water Elev 1 176.00 92.80
Max Pool Depth (max outlet pool) 1 176.00 92.05
Top of Pipe Outlet 1 178.00 100.12
D/S Water Surface Elev (water surface at outlet) 1 178.00 92.77
Outlet Invert (invert on substrate) 1 178.00 91.96
Road Elev 1 208.00 105.46
Inlet Culvert Top 1 238.80 101.59
Inlet Culvert Invert (on substrate) 1 238.80 93.61
U/S Water Surface Elev (inlet water surface) 1 238.80 94.03
U/S Grade Ctrl (Thalweg) (top of log riffle) 1 259.80 94.84
U/S Water Surface Elev 1 259.80 95.00
U/S Grade Ctrl (Thalweg) (end of step pool on log) 1 282.80 95.28
U/S Water Surface Elev 1 282.80 95.86
U/S Grade Ctrl (Thalweg) (end of step pool on log) 1 304.80 96.01
U/S Water Surface Elev 1 304.80 96.17
U/S Water Surface Elev 1 324.80 96.19
U/S Thalweg (max pool depth upst) 1 324.80 94.81
U/S Grade Ctrl (Thalweg) (top of riffle in narrow natural channel) 1 348.80 96.04
U/S Water Surface Elev 1 348.80 96.60

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.

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