Spawning the famous Henry's Lake trout! 

Thank you. This was very interesting. I worked a year at the McCall Fish Hatchery way back more than 35 years ago. I was offered a job at Henry's Lake with Idaho Fish and Game even further back than that. I should have gone...

Good stuff! Always wondered how they did that, and now I know!

Wow, I didn't realize they were intentionally dumping hatchery fish in Henry's Lake. That sucks.