Fish Passage Site 20703248

Coordinates (dec. deg.): 57.76661°, -152.53389°
Legal Description: S028S020W09
Region: Southwest
Road Name: Magazine Access Road

Datum: WGS84
Quad Name / ITM: Kodiak D-2
AWC Stream #: 259-21-10120-2011
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-MAR02

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: Juvenile salmonids observed throughout the site. 3 rock clusters built inside the culvert. Embedded substate designed to be 1.3' deep at thalweg but during assessment was calculated to be only 0.4' at inlet.

Culvert Measurements

ID: 1 Structure Type: Box culvert (Structural aluminum plate) Fish Passage Rating: Green
Length(ft): 63.3
Inlet Type: Projecting
Outlet Type: Projecting
Corrugation Depth(in.): 2.0
Corrugation Width(in.): 9.0
Condition Rating(1-5): 5
Approach Angle: 0.0
Sedimentation At Inlet: No
Inlet Substrate: Gravel
Outlet Substrate: Gravel
Width(ft):15.3 15.4
Height(ft):6.1 5.3
Apron Length(ft):
Water Depth(ft): 0.42
Rustline Height(ft):
Substrate Depth(ft):0.4 1.2
Backwatered?: No
Baffles Present: No
Embedded?: Maybe
Embedded Depth(ft): 0.4
Outfall Height: 0.0
Outfall Type: At Stream Grade
Constriction Ratio: 1.7
Culvert Gradient: 2.30%
Max Slope:
Max Slope Length:

Comments: Pipe gradient- Top: 1.4%, Inver gradient: 0.65%, Water Surface gradient: 1.4% Pipe dimensions per designs: 15'4"x 6'5"x 63"

Stream Measurements

Stream SubstratesUpstreamDownstream
Stream Slope(deg.):2.3
Stream Flow Stage:Low
Stream Width Type Distance From
Crossing (ft)
Width (ft)
Upstream ordinary high water 32.0 8.20
Upstream ordinary high water 70.0 11.50
Upstream ordinary high water 100.0 7.20


Locator ID Culvert
Distance (ft)1
Distance From
Crossing (ft)2
Elevation (ft)
Road Elev 100.61
D/S Thalweg 0.00 92.77
D/S Water Surface Elev 0.00 93.15
Outlet Invert 23.00 93.15
D/S Water Surface Elev 23.00 93.57
Outlet Culvert Top (on the rib) 23.00 99.11
Inlet Culvert Top (on the rib) 86.30 100.01
Inlet Culvert Invert 86.30 93.56
U/S Water Surface Elev 86.30 94.58
U/S Thalweg (pool depth) 89.30 93.25
U/S Water Surface Elev 89.30 94.58
U/S Thalweg (on wood) 92.30 94.52
U/S Water Surface Elev 92.30 94.58
U/S Thalweg (to capture just above wood) 96.30 94.56
U/S Water Surface Elev 96.30 94.78
U/S Thalweg 109.30 94.74
U/S Water Surface Elev 109.30 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