Fish Passage Site 20700785

Coordinates (dec. deg.): 57.76874°, -152.52324°
Legal Description: S028S020W09
Region: Southwest
Road Name: Anton Larsen Bay Road

Datum: WGS84
Quad Name / ITM: Kodiak D-2
AWC Stream #:
Stream Name: Battery Creek Tributary


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-ALBO3

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: 2021

Comments: Vegetation mat has lots of alders and willows. Steepened reach above inlet.

Culvert Measurements

ID: 1 Structure Type: Open-bottom arch (Structural aluminum plate) Fish Passage Rating: Green
Length(ft): 40.8
Inlet Type: Headwall
Outlet Type: Headwall
Corrugation Depth(in.): 2.5
Corrugation Width(in.): 9.0
Condition Rating(1-5): 5
Approach Angle: 20.0
Sedimentation At Inlet: No
Inlet Substrate: Gravel
Outlet Substrate: Gravel
Width(ft):16.9 16.8
Height(ft):5.67 5.55
Apron Length(ft):
Water Depth(ft): 0.72
Rustline Height(ft):
Substrate Depth(ft):
Backwatered?: No
Baffles Present: No
Embedded?: Yes
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 1.75
Culvert Gradient: 1.60%
Max Slope:
Max Slope Length:

Comments: Culvert is a bottomless arch. Measured culvert gradient- Top: 1.6%; Invert 1.3%, Water surface 0.78% Culvert dimensions per desgins: 15'4" X 6'5"

Stream Measurements

Stream SubstratesUpstreamDownstream
Stream Slope(deg.):1.9
Stream Flow Stage:Low
Stream Width Type Distance From
Crossing (ft)
Width (ft)
Upstream ordinary high water 30.0 9.50
Upstream ordinary high water 40.0 12.30
Upstream ordinary high water 65.0 9.80
Upstream ordinary high water 95.0 7.10


Locator ID Culvert
Distance (ft)1
Distance From
Crossing (ft)2
Elevation (ft)
D/S Thalweg (bottom of riffle and reconstructed bank) 0.00 91.67
D/S Water Surface Elev 0.00 92.44
D/S Thalweg 27.00 92.41
D/S Water Surface Elev 27.00 93.00
D/S Thalweg (top of first riffle downstream of outlet) 54.00 92.93
D/S Water Surface Elev 54.00 93.74
D/S Thalweg (max depth of lateral scour pool along root wads) 86.00 92.78
D/S Water Surface Elev 86.00 93.83
Outlet Culvert Top 90.00 98.60
Outlet Invert 90.00 93.11
D/S Water Surface Elev 90.00 93.83
Inlet Culvert Top 130.80 99.25
Inlet Culvert Invert 130.80 93.63
U/S Water Surface Elev 130.80 94.15
U/S Thalweg (bottom of riffle) 135.80 93.78
U/S Water Surface Elev 135.80 94.50
U/S Thalweg (top of riffle) 146.80 94.36
U/S Water Surface Elev 146.80 94.97
U/S Thalweg (max pool depth) 155.80 93.91
U/S Water Surface Elev 155.80 95.05
U/S Thalweg 165.80 94.75
U/S Water Surface Elev 165.80 95.01


  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