With no direct fish observations, no creek-specific guide coverage and no fishing or hatch reports turned up, there is nothing here to recommend as a destination yet.
Reel Adventures Fishing Charters covers
Duncan Lake at the lake and charter level, not this creek. Idaho sits in the same reservoir-edge watershed context as
Pat Creek next door, best treated as mapping and stewardship water until a direct survey or field report says otherwise.
Documented food and forage specific to Idaho Creek has not been logged. General Duncan Reservoir-edge tributary food, shared with nearby
Cockle Creek and
Pat Creek, typically runs to
stoneflies,
caddisflies,
mayflies, midges,
terrestrials and connected-basin fry or
sculpin where habitat allows. Where legal and away from any spawning fish, that points to small-stream attractors like
Elk Hair Caddis,
Adams,
Royal Wulff and
Stimulator, nymphs such as
Prince,
Hare's Ear and
Pheasant Tail, and a sparse
Woolly Bugger or fry/sculpin streamer.