Fish Passage Site 20400105

Coordinates (dec. deg.): 61.14382°, -149.82961°
Legal Description: S012N003W09
Region: South Central
Road Name: Atkins Road

Datum: NAD83
Quad Name / ITM: Anchorage A-8
AWC Stream #: 247-60-10340-2018
Stream Name: Little Campbell Creek South Fork

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 UPD21-ATK01

Project Supervisor: Kim Clark, ADFG — Anchorage, AK
Observers: Kim Clark, Michael Mazzacavallo

Overall Fish Passage Rating: Green

Tidal: No
Backwatered: No

Step Pools: No
Construction Year: 2010


Comments: This crossing constructed as part of realignment of Campbell Creek circa 1988. Replaced again in 2010 by City of Anchorage and USFWS. Boulders at outlet, possibly fell in from banks. Large amount of fine sediment in channel inside culvert.

Culvert Measurements

ID: 1 Structure Type: Box culvert (Structural aluminum plate) Fish Passage Rating: Green
 
Length(ft): 81.2
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 9.5
Condition Rating(1-5): 5
Approach Angle: 20.0
Sedimentation At Inlet: No
Inlet Substrate: Sand
Outlet Substrate: Sand
InletOutlet
Width(ft):11.6 11.6
Height(ft):3.73 3.46
Apron Length(ft):
Water Depth(ft): 0.52
Rustline Height(ft):
Substrate Depth(ft):0.77 1.04
Backwatered?: No
Baffles Present: No
Embedded?: Yes
Embedded Depth(ft): 0.77
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 1.7
Culvert Gradient: 1.00%
Max Slope:
Max Slope Length:
 

Comments: Pipe gradient measured using water surface 0.9%. Stream slope from designs is 1.28%. Design measurements are 12'3" wide and 4'5" in height.

Stream Measurements

Stream SubstratesUpstreamDownstream
Dominant:CobbleSand
Subdominant:SandGravel
Stream Slope(deg.):1.28
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)
Stream
Width (ft)
Upstream ordinary high water 23.0 6.40
Upstream ordinary high water 37.0 6.80
Upstream ordinary high water 50.0 7.20

Elevations

Locator ID Culvert
Number
River
Distance (ft)1
Distance From
Crossing (ft)2
Relative
Elevation (ft)
Max Pool Depth 0.00 94.20
D/S Water Surface Elev 0.00 96.09
D/S Grade Ctrl (Thalweg) 11.00 95.77
D/S Water Surface Elev 11.00 96.41
D/S Thalweg 26.00 95.89
D/S Water Surface Elev 26.00 96.64
Outlet Culvert Top (on the rib) 40.00 99.99
Outlet Invert 40.00 96.25
D/S Water Surface Elev 40.00 96.77
Inlet Culvert Top 121.21 100.84
Inlet Culvert Invert 121.21 97.02
U/S Water Surface Elev 121.21 97.50
U/S Grade Ctrl (Thalweg) 124.21 96.89
U/S Water Surface Elev 124.21 97.56
U/S Thalweg 132.81 97.08
U/S Water Surface Elev 132.81 97.85
U/S Thalweg 158.21 97.62
U/S Water Surface Elev 158.21 98.36
U/S Thalweg 175.21 97.76
U/S Water Surface Elev 175.21 98.65

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