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Missouri River Angler

Nilan Reservoir

ReservoirLewis and Clark County, MT521 acres

Around here

Around Nilan Reservoir

0.5 mi

Data Source: Recreation.gov · Source: USGS GNIS · Public land: USGS PAD-US

About this water

Nilan Reservoir is a 521 acre reservoir in Lewis and Clark County, Montana. State records show it stocked 97 times between 2000 and 2026. The most-stocked species are rainbow trout, brook trout and brown trout. 2,417,977 rainbow trout have gone in across 94 releases.

Boat access nearby

One mapped launch sits within 2 miles of Nilan Reservoir. Ramp data comes from the USGS national boat-ramp inventory.

Stocking history

97 recorded stockings

DateSpeciesNumberSizeHatchery
May 26, 2026Rainbow Trout · Eagle Lake40,0003.2"Giant Springs Trout Hatchery
Jun 5, 2025Rainbow Trout · Arlee20,0005.7"Giant Springs Trout Hatchery
Jun 5, 2025Rainbow Trout · Eagle Lake20,0003.4"Giant Springs Trout Hatchery
Jun 19, 2024Rainbow Trout · Eagle Lake20,6404.1"Giant Springs Trout Hatchery
Jun 12, 2024Rainbow Trout · Arlee20,0005.2"Giant Springs Trout Hatchery
Jun 12, 2024Rainbow Trout · Arlee20,0005.7"Giant Springs Trout Hatchery
Jun 28, 2023Rainbow Trout · Eagle Lake42,6313.5"Giant Springs Trout Hatchery
Jun 27, 2023Rainbow Trout · Arlee25010.0"—
Jun 14, 2023Rainbow Trout · Arlee21,2315.5"Giant Springs Trout Hatchery
Jun 14, 2023Rainbow Trout · Arlee20,0005.6"Giant Springs Trout Hatchery
Jul 7, 2022Rainbow Trout · Eagle Lake20,0003.7"Giant Springs Trout Hatchery
May 25, 2022Rainbow Trout · Arlee26,2515.1"Giant Springs Trout Hatchery

Showing the 12 most recent of 97. Stocking records for Nilan Reservoir published by Montana Fish, Wildlife & Parks. Stocking does not guarantee fish are present. Check current regulations and access before you go. See the full Montana stocking report.

Made to print

Put Nilan Reservoir on your wall

This water as an art print: the shoreline, the rivers that feed it and the country around it, drawn from real elevation and USGS water data. Frame it tighter or wider before you print. Pick the colors and the size, and see the finished print before you buy. From $39, shipping included.

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