Spruce Budworm Defoliation Severity - 2011 (0)
| Moderate |
| Severe |
Spruce Budworm Defoliation Severity - 2010 (1)
Spruce Budworm Defoliation Severity - 2009 (2)
| Moderate |
| Severe |
Spruce Budworm Defoliation Severity - 2008 (3)
| Moderate |
| Severe |
Spruce Budworm Defoliation Severity - 2007 (4)
| Moderate |
| Severe |
Spruce Budworm Defoliation Severity - 2006 (5)
| Moderate |
| Severe |
Spruce Budworm Defoliation Severity - 2005 (6)
| Moderate |
| Severe |
Spruce Budworm Defoliation Severity - 2004 (7)
| Moderate |
| Severe |
Spruce Budworm Defoliation Severity - 2003 (8)
| Moderate |
| Severe |
Spruce Budworm Defoliation Severity - 2002 (9)
Spruce Budworm Defoliation Severity - 2001 (10)
Spruce Budworm Defoliation Severity - 2000 (11)
| Moderate |
| Severe |
Spruce Budworm Defoliation Severity - 1999 (12)
| Moderate |
| Severe |
Spruce Budworm Defoliation Severity - 1998 (13)
| Moderate |
| Severe |
Spruce Budworm Defoliation Severity - 1997 (14)
Spruce Budworm Defoliation Severity - 1996 (15)
| Moderate |
| Severe |
Spruce Budworm Defoliation Severity - 1995 (16)
| Moderate |
| Severe |
Spruce Budworm Defoliation Severity - 1994 (17)
Spruce Budworm Defoliation Severity - 1993 (18)
Spruce Budworm Defoliation Severity - 1992 (19)
Spruce Budworm Defoliation Severity - 1991 (20)
| Severe |
Spruce Budworm Defoliation Severity - 1990 (21)
| Moderate |
| Severe |
Spruce Budworm Defoliation Severity - 1989 (22)
| Moderate |
| Severe |
Spruce Budworm Defoliation Severity - 1988 (23)
| Moderate |
| Severe |
Spruce Budworm Defoliation Severity - 1987 (24)
| Severe |
|