Tustemena Lake 2006 - Cook Inlet Aquaculture Association, Kenai ...

RESULTS AND DISCUSSION
Environmental Conditions
Environmental conditions during the Kasilof River smolt migration were monitored from 22
May to 26 June 2006. Stream Stage measurements averaged 0.97 feet and ranged from 0.26 to
2.15 feet. During the period of the smolt migration, river temperatures averaged 10.3°C and
ranged from 8 to 12°C. Air temperatures averaged 12.1°C and ranged from 8 to 21°C. Thirtythree
percent of the days were clear, 31% were partly cloudy, and 36% were completely
overcast. A total of 4 mm of rain fell during this period (Appendix 1).
Smolt Enumeration
Based on the statistical analysis a total of 2.8 million (± 756,000) sockeye smolts migrated from
Tustumena Lake (Table 1) in 2005. There were no fry released in 2005, thus smolts resulting
from fry released by CIAA in 2004 made up 0.04% (±0.05%) of the migration. In 2007, there
will be no smolts resulting from CIAA releases.
Table 1. Tustumena Lake smolt migrations – 1998 to 2006.
Smolt Total 95% % 95%
Year (million) C.I. Wild Hatchery Hatchery C.I.
1998 4.6 (+395,000) 3,872,000 727,000 15.8 (+2.2)
1999 4.5 (+461,000) 3,555,000 945,000 21.0 (+2.5)
2000 4.3 (+526,000) 3,986,000 316,000 7.4 (+1.8)
2001 5.3 (+612,000) 5,155,000 105,000 1.9 (+1.0)
2002 3.5 (+618,000) 3,474,000 0 0 0
2003 12.9 (+2,437,000) 10,619,000 2,329,000 18.0 (+4.6)
2004 6.4 (+997,000) 3,155,000 3,140,000 49.9 (+12.6)
2005 11.2 (+2,152,000) 7,631,000 3,592,000 32.0 (+7.4)
2006 2.8 (+756,000) 2,833,000 10,600 0.4 (+0.5)
Average 6.2 4,920,000 1,240,511
13