
Check which species have trophy potential in Gem Lake
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Gem Lake is a lake located in Bonner County, Idaho, United States. It is most popular for fishing Brook trout and Rainbow trout.
Disclaimer: Always check local fishing regulations, water access rights and land ownership before fishing, regardless of any catches logged in that area by the Fishbrain community. Fishbrain has mapped millions of acres of government-owned land across the USA to help you identify potential fishing access, but you are responsible for ensuring compliance with all legal requirements.
Fishing regulations in Idaho can change throughout the year. Make sure to check this page before fishing for the most up to date rules and regulations for the current season. Local regulations govern when you can fish, the max size of the fish you can keep, how many fish you can keep, and more.
Below you will see fishing regulations for catching Brook trout as of April 16th, 2026. To view regulations for a different fish species, please click on your preferred species in the drop-down.
Seasons
Bag limit
Salvelinus fontinalis, brookie, coaster, speckled trout
12.6 miles away
16.4 miles away
20.6 miles away
22.9 miles away
26.6 miles away
44.4 miles away
45.5 miles away
51.0 miles away
52.2 miles away
53.2 miles away
55.6 miles away
58.2 miles away
62.7 miles away
63.8 miles away
65.1 miles away
65.5 miles away
66.0 miles away
67.6 miles away
70.4 miles away
72.6 miles away
76.7 miles away
78.4 miles away
81.6 miles away
83.9 miles away
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