Where is Gem Lake in eastern Idaho?

[Tazasorus]

Fall before last I watched four fish removed out of lava hole that they had been stranded in that ranged from 30 inches to 40 inches, I even took pictures and posted which started a firestorm of upset because guys removed without proper authority. Now when gates are shut off the city has F&G standing on hand to go down and remove fish themselves. Obviously those fish have been in the river a whole lot longer to get to that size. I wonder how long.
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