Lark Reservoir fishing

Fishing at Lark Reservoir has Largemouth Bass and Bluegill on the stocking report. It is stocked about 0.8 times a year since 2020, most often in July and August. Species guides list dawn and dusk for Largemouth Bass and dawn, day, and dusk for Bluegill.

Last stocked

August 19, 2025

Plants on record

5

Since 2020

Species recorded

2

Average size

1.5 in

Elevation

2,900.7 ft

Access and facts

Small (about 5-acre) reservoir approximately 10 miles south of Dry Fork Rd off Hwy 191, on an unmarked road.

Sources: shore_notes

How Lark Reservoir is stocked

The first plant of the year usually falls in the fourth week of July. In 2025 it was August 19, 2025, later than usual.

No plants recorded in 2022 and 2023.

Sagebrush Reservoir (5.6 mi), Taint Reservoir (6.7 mi), and Hump Lake (13.4 mi) were stocked more recently. Sagebrush Reservoir is also stocked with Largemouth Bass and Bluegill, Taint Reservoir is also stocked with Largemouth Bass and Bluegill, and Hump Lake is also stocked with Largemouth Bass and Bluegill.

Fish at Lark Reservoir

Fishing Lark Reservoir is most likely to be for Largemouth Bass. Largemouth Bass accounts for 4 of 5 plants on record, ahead of Bluegill.

Around the dates Lark Reservoir is stocked, Open-Meteo's 2016-2025 archive puts mean air temperature at 74.6°F in July, 72.3°F in August, 34.4°F in November. That is air temperature at these coordinates, not water temperature. Open-Meteo

Largemouth Bass 4 plants
Plants
4 of 5
Last stocked
August 19, 2025
Average length
1.7 in

Seasons and rigs are on the Largemouth Bass guide.

Bluegill 1 plant
Plants
1 of 5
Last stocked
November 2, 2020
Average length
0.7 in

Seasons and rigs are on the Bluegill guide.

Fish stocked per year

  • 9,5002020
  • 2,0002021
  • 3,0002024
  • 3,0002025

Stocking history

Source: Montana Fish, Wildlife & Parks.
Date Species Quantity Avg. length Source
August 19, 2025 Largemouth Bass 3,000 2.91 in report
August 19, 2024 Largemouth Bass 3,000 1.41 in report
July 26, 2021 Largemouth Bass 2,000 1.88 in report
November 2, 2020 Bluegill 7,500 0.66 in report
July 15, 2020 Largemouth Bass 2,000 0.78 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