Iliad Reservoir fishing

Fishing at Iliad Reservoir has Rainbow Trout and Largemouth Bass on the stocking report. It is stocked about once a year since 2011, most often in July and August. Species guides list dawn and dusk as the active times.

Last stocked

August 12, 2025

Plants on record

15

Since 2011

Species recorded

2

Average size

2.4 in

Elevation

2,931 ft

Access and facts

Nearest town
Big Sandy

Very small (under 1-acre) reservoir about 30 miles southeast of Big Sandy.

Sources: shore_notes , nearest_town

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How Iliad Reservoir is stocked

The first plant of the year usually falls in the fourth week of July. In 2025 it was July 8, 2025, earlier than usual.

No plants recorded in 2022.

Gasvoda Reservoir (12.7 mi) and Cow Creek Reservoir (30.2 mi) were stocked more recently. Gasvoda Reservoir is also stocked with Rainbow Trout and Largemouth Bass.

Fish at Iliad Reservoir

Fishing Iliad Reservoir is most likely to be for Largemouth Bass. Largemouth Bass accounts for 13 of 15 plants on record, ahead of Rainbow Trout.

Around the dates Iliad Reservoir is stocked, Open-Meteo's 2016-2025 archive puts mean air temperature at 74.2°F in July, 71.4°F in August, 43.6°F in April. That is air temperature at these coordinates, not water temperature. Open-Meteo

Largemouth Bass 13 plants
Plants
13 of 15
Last stocked
August 12, 2025
Average length
1.8 in

Seasons and rigs are on the Largemouth Bass guide.

Rainbow Trout 2 plants
Plants
2 of 15
Last stocked
July 8, 2025
Average length
6.6 in

Seasons and rigs are on the Rainbow Trout guide.

Fish stocked per year

  • 2,0002011
  • 2,0002012
  • 2,0002013
  • 2,0002014
  • 2,0002015
  • 2,0002016
  • 2,0002017
  • 1,5002018
  • 2,0002019
  • 2,0002020
  • 2,0002021
  • 2,0002023
  • 2,0002024
  • 3,0002025

Stocking history

Source: Montana Fish, Wildlife & Parks.
Date Species Quantity Avg. length Source
August 12, 2025 Largemouth Bass 2,000 1.86 in report
July 8, 2025 Rainbow Trout 1,000 8.8 in report
August 13, 2024 Largemouth Bass 2,000 1.35 in report
July 27, 2023 Largemouth Bass 2,000 1.8 in report
July 22, 2021 Largemouth Bass 2,000 1.92 in report
July 15, 2020 Largemouth Bass 2,000 0.77 in report
July 27, 2019 Largemouth Bass 2,000 1.55 in report
April 26, 2018 Largemouth Bass 1,500 2.32 in report
August 2, 2017 Largemouth Bass 2,000 3.03 in report
August 10, 2016 Largemouth Bass 2,000 1.62 in report
August 3, 2015 Largemouth Bass 2,000 1.85 in report
July 17, 2014 Largemouth Bass 2,000 1.3 in report
July 23, 2013 Largemouth Bass 2,000 2.3 in report
August 8, 2012 Largemouth Bass 2,000 1.5 in report
July 18, 2011 Rainbow Trout 2,000 4.3 in report

Species stocked here

Depth-by-season, top lures, and bait notes for each species stocked here are on its own species guide, linked above.

Nearest lakes