Island Park Reservoir

Fishing and stocking

Rainbow trout water; one stocking on the 2026 record, in September. A 7,550-acre reservoir.

Idaho · see it on the national map

last stocked Sep 28 25 days ago

best window 10:30 pm-12:30 am solunar major today

1 stocking 2026

10,500 fish reported

7,550 acres (NHD)

The year here

stocked last 7 days announced ahead · tap a tick for details

What swims here

Rainbow trout 1 stocking

Stocking record 2026

Agency feed checked Oct 19.

Date	Species	Size	Fish	Status
Sep 28wk	Rainbow trout	catchable	10,500	completed

When to fish Island Park Reservoir

	Major periods (~2 h)	Minor periods (~1 h)
Today	10:07 am-12:07 pm and 10:30 pm-12:30 am	4:26-5:26 am and 4:36-5:36 pm
Tomorrow	10:53 am-12:53 pm	5:38-6:38 am and 4:57-5:57 pm

Moon: waxing gibbous, 93% lit. These are solunar periods, the traditional feeding-time theory: majors around the moon's transit overhead and underfoot, minors around moonrise and moonset. Theory, not a measurement. Times are Mountain Time (MDT).

What the record actually says

Stocked 25 days ago (Sep 28)

Computed this evening, Oct 23 · Idaho fishing forecast

Gear for this water

The last plant has had time to disperse; work outward from the obvious spots.

For the trout (rainbow trout stocked 1 time here in 2026, stillwater)

Ultralight spinning rod	6 to 7 ft ultralight, 4 lb line; long casts from the bank
Dough bait rigs	floating dough bait 18 inches above a small egg sinker; hatchery fish know the smell
Casting spoons	1/8 to 1/4 oz in fluorescent or metallic; count down until you find the depth

Suggestions follow from what the state actually stocks here and what kind of water it is, nothing else. No sponsored placements.

Nearby stocked waters

The closest waters with stocking pages of their own, straight-line miles from this one.

Water	Distance	Most recent
Ruby River Reservoir MT	64 mi	Jun 22
Dailey Lake MT	68 mi	May 19
Clark Canyon Reservoir MT	77 mi	Jul 30
West Rosebud Lake MT	106 mi	Jun 3
Greenough Lake MT	112 mi	Aug 25

Follow Idaho stocking: RSS / Calendar (iCal) / Print the schedule

Records from Idaho Department of Fish and Game (official page). Placement from USGS GNIS and the National Hydrography Dataset. Schedules change without notice. Seasons, limits, and licenses: Idaho fishing regulations.