Oil Pump Reservoir fishing

Fishing at Oil Pump Reservoir has Rainbow Trout on the stocking report. It is stocked about once a year since 2011, most often in April and May. Species guides list dawn and dusk as the active times.

Last stocked

May 13, 2025

Plants on record

15

Since 2011

Species recorded

1

Average size

2.2 in

Elevation

2,412.1 ft

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How Oil Pump Reservoir is stocked

The first plant of the year usually falls in the fourth week of April. In 2025 it was May 13, 2025, later than usual.

South Sandstone Reservoir (36.9 mi) and Lake Baker (38.8 mi) were stocked more recently. Lake Baker is also stocked with Rainbow Trout.

Fish at Oil Pump Reservoir

Fishing Oil Pump Reservoir is most likely to be for Rainbow Trout. All 15 plants on record are Rainbow Trout.

Around the dates Oil Pump Reservoir is stocked, Open-Meteo's 2016-2025 archive puts mean air temperature at 43.4°F in April, 56.8°F in May, 68.1°F in June. That is air temperature at these coordinates, not water temperature. Open-Meteo

Rainbow Trout 15 plants
Plants
15 of 15
Last stocked
May 13, 2025
Average length
2.2 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
  • 2,0002018
  • 2,0002019
  • 2,0002020
  • 2,0002021
  • 2,0002022
  • 2,0002023
  • 2,0002024
  • 2,0002025

Stocking history

Source: Montana Fish, Wildlife & Parks.
Date Species Quantity Avg. length Source
May 13, 2025 Rainbow Trout 2,000 2.26 in report
May 23, 2024 Rainbow Trout 2,000 1.78 in report
May 19, 2023 Rainbow Trout 2,000 2.27 in report
April 27, 2022 Rainbow Trout 2,000 2 in report
June 7, 2021 Rainbow Trout 2,000 2.51 in report
April 22, 2020 Rainbow Trout 2,000 4.42 in report
April 24, 2019 Rainbow Trout 2,000 1.88 in report
May 2, 2018 Rainbow Trout 2,000 2.01 in report
April 12, 2017 Rainbow Trout 2,000 1.98 in report
April 5, 2016 Rainbow Trout 2,000 1.9 in report
April 7, 2015 Rainbow Trout 2,000 1.8 in report
April 15, 2014 Rainbow Trout 2,000 2 in report
April 11, 2013 Rainbow Trout 2,000 2 in report
April 18, 2012 Rainbow Trout 2,000 2.15 in report
April 21, 2011 Rainbow Trout 2,000 2 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