Fish Passage Site 20703255

Coordinates (dec. deg.): 57.76631°, -152.53383°
Legal Description: S028S020W09
Region: Southwest
Road Name: Magazine Access Road

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


Site Comments: Culvert is on a access road directly off Gunnery Drive around MP 0.5. Culvert is about 250 ft above KOD05 and stream is an unnamed tributary to Battery Creek.

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-MAR03

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: 2019

Comments: Boulders are placed along the L Bank downstream. Stream was rerouted when the culvert was replaced. Juvenile salmonids observed upstream of culvert. Banks and channel features present inside culvert.

Culvert Measurements

ID: 1 Structure Type: Box culvert (Structural aluminum plate) Fish Passage Rating: Green
Length(ft): 54.3
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 2.5
Corrugation Width(in.): 9.0
Condition Rating(1-5): 5
Approach Angle: 50.0
Sedimentation At Inlet: No
Inlet Substrate: Gravel
Outlet Substrate: Gravel
Width(ft):11.35 11.66
Height(ft):3.65 4.14
Apron Length(ft):
Water Depth(ft): 0.23
Rustline Height(ft):
Substrate Depth(ft):3.25 2.76
Backwatered?: No
Baffles Present: No
Embedded?: Yes
Embedded Depth(ft): 2.76
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 2.38
Culvert Gradient: 2.23%
Max Slope:
Max Slope Length:

Comments: Pipe Gradient calculations Top: 2.23%, Water Surface: 2.62%, Invert 1.75% Pipe dimensions per designs: 13'3" x 6'9" x 54"

Stream Measurements

Stream SubstratesUpstreamDownstream
Stream Slope(deg.):2.17
Stream Flow Stage:Medium
Stream Width Type Distance From
Crossing (ft)
Width (ft)
Downstream ordinary high water 17.0 5.65
Downstream ordinary high water 27.0 4.92
Downstream ordinary high water 32.0 4.10


Locator ID Culvert
Distance (ft)1
Distance From
Crossing (ft)2
Elevation (ft)
Road Elev 100.95
D/S Thalweg 0.00 93.83
D/S Water Surface Elev 0.00 94.22
D/S Thalweg (pool) 9.00 93.34
D/S Water Surface Elev 9.00 94.20
D/S Thalweg 15.00 94.10
D/S Water Surface Elev 15.00 93.34
Outlet Invert 25.00 94.32
D/S Water Surface Elev 25.00 94.55
Outlet Culvert Top 25.00 98.79
Inlet Culvert Top 79.27 100.00
Inlet Culvert Invert 79.27 95.27
U/S Water Surface Elev 79.27 95.97
U/S Thalweg (head of riffle, bottom of glide) 107.27 96.27
U/S Water Surface Elev 107.27 96.44


  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