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AL > Fisheries & Aquaculture > Escape Prevention > Escape Statistics
Escape Statistics
The Ministry of Agriculture and Lands has maintained a database of all reported escape events since 1987.
Number of Reported Escaped Farmed Salmon
into the Marine Environment
1987 to 2003
(pieces) |
Year |
Chinook |
Coho |
Atlantic |
Steelhead |
Annual Total |
1987 |
22,422 |
0 |
0 |
32,576 |
54,998 |
1988 |
2,000 |
0 |
0 |
0 |
2,000 |
1989 |
390,165 |
0 |
0 |
0 |
390,165 |
1990 |
165,000 |
0 |
0 |
0 |
165,000 |
1991 |
229,500 |
0 |
6,650 |
0 |
236,150 |
1992 |
59,632 |
0 |
9,546 |
0 |
69,178 |
1993 |
12,113 |
0 |
9,000 |
0 |
21,113 |
1994 |
2,300 |
0 |
62,809 |
0 |
65,109 |
1995 |
5,000 |
1,000 |
51,883 |
0 |
57,883 |
1996 |
0 |
0 |
13,137 |
0 |
13,137 |
1997 |
38,956 |
0 |
7,472 |
0 |
46,428 |
1998 |
1,900 |
0 |
80,975 |
0 |
82,875 |
1999 |
0 |
0 |
35,954 |
0 |
35,954 |
2000 |
36,392 |
0 |
31,855 |
0 |
68,247 |
2001 |
0 |
0 |
55,414 |
0 |
55,414 |
2002 |
9,098 |
100 |
11,257 |
0 |
20,455 |
2003 |
9 |
1 |
30 |
0 |
40 |
TOTAL |
974,487 |
1,101 |
375,982 |
32,576 |
1,384,146 |
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The factors contributing to escapes can be roughly divided into six general categories:
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System Failure: failure of containment structures or anchoring systems that result from a technological failure not related to nets, generally of a catastrophic nature. Can most often be attributed to extreme weather or ecological events (i.e. floods).
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Boat Operations: net tears or infrastructure damage resulting from propeller or whole boat collisions with the net pen system.
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Net Failure (predators): net tears resulting from seal, sea lion or dogfish attacks.
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Net Failure (maintenance): net tears resulting from poor or inadequate maintenance such as chafing of nets due to contact with abrasive equipment, failure to repair small holes, deterioration of nets with age, failure to remove dead fish or debris, etc.
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Net Failure (known or suspected vandalism): fish loss resulting from a suspected or known vandalism incident.
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Handling: fish loss that results during fish handling events such as fish transfer, net changes, towing, sorting, grading, harvesting, etc and is not related to failure of the integrity of a net-pen or containment structure. This type of escape can generally be directly attributed to human error.
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Updated: April 21, 2005
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