D'Alessandro and Duffield: Salmonid tags found in a Phocoena phocoena in southwestern Washington 
305 
Table 1 
Summary of information for coded wire tags (CWTs) and the juvenile Chinook salmon (Oncorhynchus tshawytscha) from hatcheries 
in the Columbia River Basin in which the CWTs had been inserted. These CWTs were found in the forestomach of a dead, stranded 
harbor porpoise (Phocoena phocoena) recovered from the Long Beach Peninsula in southwestern Washington on 22 August 2012. 
The code 09blank may or may not be associated with Chinook salmon because no data are available. ID=Idaho; WA=Washington; 
OR=Oregon; NFH=National Fish Hatchery. Data source: Regional Mark Information System (RMIS, available from website). Stock 
location names are given exactly as they appear in the RMIS. 
Release 
location 
Stock location 
Hatchery 
Run (return to 
freshwater) 
Total no. 
of CWTs 
CWT numbers 
ID 
Snake River 
Oxbow Hatchery 
Fall 
5 
100201 
ID 
Lyons Ferry Hatchery 
Nez Perce Tribal Hatchery 
Late fall 
6 
220216, 220224 
ID, WA 
Lyons Ferry Hatchery 
Lyons Ferry Hatchery 
Late fall 
19 
220324,220325, 220326, 220327, 
220328,220329 
WA 
Spring Creek 29.0159 
Little White Salmon NFH 
Fall 
4 
055233,055260 
WA 
Snake River-Lower 33.0002 
Lyons Ferry Hatchery 
Fall 
3 
636417, 636418 
WA 
Spring Creek 29.0159 
Spring Creek NFH 
Fall 
13 
055399,055404, 055527, 055528 
WA 
Cowlitz River 26.0002 
Cowlitz Salmon Hatchery 
Spring 
1 
635273 
WA 
Wenatchee River 45.0030 
Dryden Pond 
Summer 
1 
635776 
WA 
Wells Hatchery 
Entiat NFH 
Summer 
1 
055364 
WA 
Methow and Okanogan 
Similkameen Hatchery 
Summer 
1 
635690 
WA 
Wells Hatchery 
Wells Hatchery 
Summer 
2 
636370 
OR 
Big Creek Hatchery 
Big Creek Hatchery 
Fall 
18 
090566,090567,090582,090583 
OR 
Columbia River Tules 
Bonneville Hatchery 
Fall 
3 
090571 
OR 
Snake River-Lower 33.0002 
Irrigon Hatchery 
Fall 
3 
636419 
OR 
Snake River 
Irrigon Hatchery 
Late fall 
2 
090587 
OR 
Umatilla River 
Umatilla Hatchery 
Fall 
5 
090585,090586 
OR 
Santiam River North Fork 
Marion Forks Hatchery 
Spring 
1 
090526 
OR 
Unknown 
Unknown 
Unknown 
3 
09blank 
databases, Columbia Basin PIT Tag Information System 
(available from website) and RMIS, can be performed for 
more information. The CWT numbers also identify spe¬ 
cific batches of fish releases. 
Materials and methods 
The forestomach of the skeletonized harbor porpoise 
was collected on 22 August 2012 and transported to the 
Marine Mammal Laboratory at Portland State Univer¬ 
sity for analysis. The forestomach was completely desic¬ 
cated; therefore, a single cut to the forestomach was made 
longitudinally, and the contents were removed by hand. 
The forestomach lining was inspected for any additional 
contents that may have adhered to the stomach wall, and 
remaining contents were gently removed with forceps. 
Contents included PIT tags and CWTs. All of the tags 
were delivered to the ODFW Columbia River Manage¬ 
ment Program, where the tags were read by laboratory 
staff. Staff of the ODFW provided to us spreadsheets, cre¬ 
ated in Microsoft Excel 1 (Microsoft Corp., Redmond, WA), 
that contain hatchery-related data for individual tags. For 
1 Mention of trade names or commercial companies is for identi¬ 
fication purposes only and does not imply endorsement by the 
National Marine Fisheries Service, NOAA. 
any CWT records that lacked data because information 
was not entered into the database, we later downloaded 
data from the RMIS website. In addition, we queried PIT 
tag codes and downloaded the associated records from the 
Columbia Basin PIT Tag Information System website to 
verify that additional information had not subsequently 
been added to the online records. 
Results and discussion 
Five PIT tags and 91 CWTs were recovered from the 
forestomach of the dead, stranded harbor porpoise from 
the Long Beach Peninsula. The PIT tags came from juve¬ 
nile fall-run Chinook salmon representing 3 hatcheries 
in the Columbia River Basin: Lyons Ferry Hatchery in 
Washtucna, Washington, Oxbow Fish Hatchery in Oxbow, 
Oregon, and Irrigon Hatchery in Irrigon, Oregon. Between 
3 May and 29 May 2012, these Chinook salmon were 
released at 3 different locations: Lyons Ferry Hatchery; 
the acclimation facility at Pittsburg Landing, Idaho; and 
Snake River, from Salmon River to Hells Canyon in Ore¬ 
gon and Idaho. Two of the tagged Chinook salmon (PIT 
tag nos. 3D9.1C2DE01E19 and 3D9.1C2DE025DA) were 
released in the same group on 22 May 2012, one of which 
was detected at the juvenile bypass system of the Lower 
Granite Dam (Fig. 1) in southeastern Washington on 
