Here's how the collection works...
In the fall they have 2-3 egg collection events and all eggs transported back to teh San Joaquin (Friant) fish hatchery. They are cared for extensively through volunteer help and when they hatch the divide up the fry to two other hatcheries, The Silverado and American River Hatcheries. For this year the numbers at each hatchery from November was:
415K - San Joaquin (Friant)
530K - American River Hatchery
212K - Silverado Hatchery
From each hatchery when the water temp is right they get distributed into their respective lakes in their zones as that is up to the DFG to decide plant numbers / lakes / qty and then they also get input from the Kokanee organizations as well.
Hopefully that explains it but ask more questions if needed. This year there were 14 volunteers helping to raise the fish at San Joaquin and they had 241 man hours in as of November and then it tapers off after distribution of eggs and the fish get into the race-ways and have some automatic feeders to keep them fed.
I stress the point of the volunteers and the Kokanee organizations, Kokanee Power and Project Kokanee that contribute back to the fishery in many ways that people don't know about.
Kevin