Adams County · reservoir · 726 acres
Lost Valley Reservoir
Stocked 3× on record · IDFG
Lost Valley Reservoir is a reservoir in Adams County, Idaho, stocked with Rainbow Trout (Triploid) — most recently on May 29, 2026. FishableWaters aggregates every stocking record for this water from IDFG; the latest schedule and today's bite windows are above.
Best days this week
Days near a new or full moon tend to fish best.
Today's bite windows
Conditions, next 3 days
Today
Clear
87°
57°
9 mph
0%
Fri
Mostly clear
93°
63°
8 mph
0%
Sat
Overcast
90°
60°
13 mph
0%
↗ pressure risingPost-front rising pressure can slow things down for a day.
Stocking ledger
| — 2026 — | ||||
| May 29 | Rainbow Trout (Triploid) | 2,960 | 13" | |
| May 29 | Rainbow Trout (Triploid) | 4,662 | 13" | |
| May 12 | Rainbow Trout (Triploid) | 7,022 | 13" | |
Angler reports
What's biting
No reports yet — be the first
Best bite times
No reports yet
Field notes
No notes yet
Nearby waters
- East Fork Lost Creek2.5 mi
- Grouse Creek2.3 mi
- Fourth of July Creek2.8 mi
- East Branch Weiser River4.0 mi
- Mosquito Creek3.1 mi
- Lost Creek4.1 mi
- Beaver Creek4.6 mi
- Warm Spring Creek7.9 mi
Seasons, limits, and rules are the state's call — check the official ID regulations and buy your license before you go. We link the source; we never restate the rules.
Lost Valley Reservoir fishing — FAQ
What fish are stocked in Lost Valley Reservoir?+
Lost Valley Reservoir is stocked with Rainbow Trout (Triploid) in Adams County, Idaho, most recently on May 29, 2026 by IDFG. The full stocking ledger is on this page.
Do I need a license to fish Lost Valley Reservoir?+
Yes — Idaho requires a fishing license. Buy one from the state and check current seasons and limits before you go; both are linked on this page.
Where is Lost Valley Reservoir?+
Lost Valley Reservoir is a reservoir in Adams County, Idaho. Driving directions and an interactive topo map are on this page.
Data: IDFG · updated May 29, 2026 · checked daily · we publish what agencies publish, nothing else.