Bull trout picture, courtesy of the U. S. Fish and Wildlife Service

Supplemental Aquatic Life Temperature Criteria Information

 

Different Aquatic Life Uses and Their Associated Numeric Criteria

BENEFICIAL USE  TEMP
   Highest 7-DADMAX
Char Spawning and Rearing  12º C
Core Summer Salmonid Habitat  16º C
Salmonid Spawning, Rearing, and Migration  17.5º C
Salmonid Rearing, & Migration only  17.5º C

 

Spawning and Egg Incubation Periods

DATES  SPECIES
Aug 21 - May 15 Char Spawning and Incubation
Sep 1 - May 15 Char Spawning and Incubation
Aug 1 - Jul 15 Salmon and Trout Spawning and Incubation
Aug 1 - Jun 15 Salmon and Trout Spawning and Incubation
Aug 15 - Jul 1 Salmon and Trout Spawning and Incubation
Aug 15 - Jul 15 Salmon and Trout Spawning and Incubation
Aug 15 - Jun 15 Salmon and Trout Spawning and Incubation
Aug 15 - May 15 Salmon and Trout Spawning and Incubation
Feb 15 - Jul 1 Salmon and Trout Spawning and Incubation
Feb 15 - Jun 1 Salmon and Trout Spawning and Incubation
Feb 15 - Jun 15 Salmon and Trout Spawning and Incubation
Oct 1 - Jun 15 Salmon and Trout Spawning and Incubation
Oct 1 - May 15 Salmon and Trout Spawning and Incubation
Sep 1 - Jul 1 Salmon and Trout Spawning and Incubation
Sep 1 - Jul 15 Salmon and Trout Spawning and Incubation
Sep 1 - Jun 15 Salmon and Trout Spawning and Incubation
Sep 15 - Jul 1 Salmon and Trout Spawning and Incubation
Sep 15 - Jun 15 Salmon and Trout Spawning and Incubation
Sep 15 - May 15 Salmon and Trout Spawning and Incubation

 

For questions or comments, please contact:

Susan Braley
Water Quality Program
WA Department of Ecology
P.O. Box 47600
Olympia, WA  98504-7600
Phone:  360-407-6414
Email:  SWQS461@ecy.wa.gov
 

Back to Temperature Water Quality Criteria

Back to Surface Water Criteria

 

Back to top of page

Last updated April 2008