Browse Idaho Fishing Reports

Covers Aug 26–Sep 2

Low, clear water makes the Big Lost accessible but demands stealth and smart timing. Fish the morning window hard when Tricos and small mayflies are active.

Covers Aug 19–26

The Big Lost is running low and clear, with morning mayfly hatches and strong nymph fishing through the week. Focus on the main stem as the North Fork recovers from recent muddy conditions.

Covers Aug 12–19

Low flows make the Big Lost challenging but rewarding for anglers willing to fish small and precise. Morning Tricos give way to hoppers and selective mayfly patterns as the water warms.

Covers Aug 5–12

The Big Lost is dropping into low-flow summer conditions and fishing despite angler pressure. Expect hatch activity through the morning and afternoon, with both dry-fly and nymph opportunities. Move frequently to find fish that haven't seen multiple casts.

Covers Jul 29–Aug 5

The Big Lost's North Fork and main stem are in good shape heading into early August, with manageable flows and morning hatches of Tricos and PMDs. Plan to move around the East Fork's heavier pressure and pack attractors in multiple sizes.

Covers Jun 10–17

Expect high flows to keep the Big Lost challenging early in this outlook window. Water levels should trend downward as the week progresses, gradually opening up wading opportunities on the lower section. Scout the upper valley during high water; plan a return trip once flows recede.