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Gem Lake

Gem Lake is a lake in Bonneville County, Idaho.

Live lake forecast

Gem Lake Fishing Weather

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Fish species in Gem Lake

Official stocking history

Stocking records show that the following fish or strains were stocked here. A historical stocking does not by itself prove that a self-sustaining population remains today.

Gem Lake in Bonneville County is a lake in Idaho and covers about 397.98 acres.

The best plan at Gem Lake is to choose one arm or shoreline and work it from shallow cover to the first deep break.

Fish and Baits

Fish listed for Gem Lake include Brown Trout, Common Carp, Mountain Whitefish, Rainbow Trout, Smallmouth Bass, Idaho Chub, Idaho Sucker, and Yellowstone Cutthroat Trout.

On a methodical search near a narrow cove after warm rain, drag a tube or Ned rig across rock and the hard edge of a point for smallmouth bass.

On a methodical search near the first break near firm bottom, cast a small spoon, inline spinner, light jig, or fly through cool water for rainbow trout.

On a steady fall day near a shaded bank before changing depth, work a small minnow bait, spoon, or streamer along cool breaks and moving water for brown trout.

During the final pass near a shallow shelf in stained water, place corn or a dough bait on the bottom along a shallow flat for common carp.

On a return to the best bank near a windblown shore close to shade, Cutbow Trout, Rainbow Trout, and Yellowstone Cutthroat Trout have also been stocked here; that proves fish were released, but it does not promise that they are still common or easy to catch.

How to Read the Water

On an overcast morning near a firm-bottom flat where food is present, use wind as a clue; a light push can carry food toward a bank, but hard wind may muddy it, so look for a clean edge near a point or protected pocket.

Season by Season

While using a short cover-to-depth check near a firm-bottom flat close to shade, spring runoff can add color and pull fish toward fresh water; green weeds and the first drop become stronger summer targets; in fall, follow bait toward points and shallow flats, while winter rewards a slower search.

A Simple Tackle Plan

On a methodical search near scattered wood after warm rain, a light spinning rod, thin line, a few small spoons, inline spinners, and jigs cover the listed trout; carry one slightly heavier setup when other fish or windy water call for more control.

During the first pass near an open-water edge with stable weather, record the wind, water color, depth near the strongest cover, and cover after a bite; those four notes are more useful on the next trip than a long list of spots that did not produce.

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