Valley County · reservoir · 2 acres
Half Barrel Detention Reservoir
Half Barrel Detention Reservoir is a reservoir in Valley County, Montana. FishableWaters aggregates every stocking record for this water from Montana's fish & wildlife agency; 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
Stocking ledger
No published stocking records yet. This water stays in our books — the ledger begins the hour its state agency publishes a record.
Angler reports
What's biting
No reports yet — be the first
Best bite times
No reports yet
Field notes
No notes yet
Nearby waters
- Corral Junction Number Two Detention Reservoir2.0 mi
- Forrest Reservoir1.9 mi
- Hard Pan Creek1.8 mi
- Short Creek Reservoir2.3 mi
- Hen Reservoir2.0 mistocked Jun 9, 2026
- Valley Reservoir2.3 mi
- Duck Soup Reservoir2.9 mi
- Short Creek2.6 mi
Seasons, limits, and rules are the state's call — check the official MT regulations and buy your license before you go. We link the source; we never restate the rules.
Half Barrel Detention Reservoir fishing — FAQ
Do I need a license to fish Half Barrel Detention Reservoir?+
Yes — Montana 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 Half Barrel Detention Reservoir?+
Half Barrel Detention Reservoir is a reservoir in Valley County, Montana. Driving directions and an interactive topo map are on this page.