Southern Manitoba

Rock Lake

About this lake

A prairie lake in the Pembina Valley west of Pilot Mound, Rock Lake is a stocked walleye water that also holds northern pike and carp. Angler catch reports consistently show walleye and pike as the top species. It is a quieter alternative to the bigger name lakes nearby, with decent shore and small-boat access.

🏆 Trophy catches

The biggest documented fish caught here, from the Manitoba Master Angler record book.

46″ Northern PikeReleased

Charlyn Croom · June 01, 2019

116.8 cm

45.5″ Northern PikeReleased

Darian Dobrescu · May 19, 2016

115.6 cm

44.13″ Northern PikeReleased

Dan Geirnaert · June 01, 2000

112.1 cm

Source: Manitoba Master Angler record book (anglers.travelmanitoba.com)

Where it is

📍 Rock Lake · Southern

2026 Manitoba Anglers' Guide

Fishing regulations

Southern Division

Special rules for this waterbody

Walleye limit 2; all walleye over 45 cm must be released.

Species	Possession limit	Size restriction	Season
Walleye (Pickerel) & Sauger (either or combined)	4	None may exceed 55 cm	Southern Division: closed April 6, 2026 to May 8, 2026; open May 9, 2026 to April 4, 2027. Northwest Division: closed May 1 to May 15, 2026; open May 16, 2026 to April 30, 2027. North Central Division: closed May 1 to May 15, 2026; open May 16, 2026 to April 30, 2027. Northeast Division: generally open all year (waterbody-specific closures apply). Lake Winnipeg: walleye/sauger closed April 6 to May 15, 2026.
Northern Pike (Jackfish)	4	None may exceed 75 cm	Open year-round (all divisions; waterbody-specific closures apply)

Walleye (Pickerel) & Sauger (either or combined)

Limit: 4
Size: None may exceed 55 cm
Season: Southern Division: closed April 6, 2026 to May 8, 2026; open May 9, 2026 to April 4, 2027. Northwest Division: closed May 1 to May 15, 2026; open May 16, 2026 to April 30, 2027. North Central Division: closed May 1 to May 15, 2026; open May 16, 2026 to April 30, 2027. Northeast Division: generally open all year (waterbody-specific closures apply). Lake Winnipeg: walleye/sauger closed April 6 to May 15, 2026.

Northern Pike (Jackfish)

Limit: 4
Size: None may exceed 75 cm
Season: Open year-round (all divisions; waterbody-specific closures apply)

Source: 2026 Manitoba Anglers' Guide (gov.mb.ca/nrnd/fish-wildlife/pubs/fish_wildlife/fish/angling-guide.pdf), Waterbody Specific Regulations pp. 18-23. Summaries only — confirm in the official guide.

Stocking history

Largemouth BassNorthern PikeWalleyeYellow Perch

Date	Species	Size	Quantity
May 22, 2025	Walleye	Fry	1,400,000
May 15, 2024	Walleye	Fry	1,000,000
May 22, 2023	Walleye	Fry	1,000,000
May 30, 2022	Walleye	Fry	200,000
Oct 20, 2021	Walleye	12-15 cm	5,639
May 18, 2021	Walleye	Fry	1,300,000
May 21, 2020	Walleye	Fry	1,200,000
Sep 16, 2019	Walleye	Fingerling	303
May 30, 2019	Walleye	Fry	400,000
May 27, 2019	Walleye	Fry	800,000
May 23, 2018	Walleye	Fry	500,000
May 18, 2017	Walleye	Fry	1,500,000
May 17, 2016	Walleye	Fry	700,000
May 19, 2015	Walleye	Fry	1,000,000
May 28, 2014	Walleye	Fry	1,000,000
May 29, 2013	Walleye	Fry	500,000
May 12, 2010	Walleye	Fry	300,000
May 24, 2008	Walleye	Fry	800,000
May 15, 2007	Walleye	Fry	600,000
May 15, 2006	Walleye	Fry	650,000
May 13, 2005	Walleye	Fingerling	600,000
May 27, 2004	Walleye	Fry	600,000
May 28, 2002	Walleye	Fry	400,000
May 29, 1997	Walleye	Fry	450,000
May 9, 1995	Northern Pike	Fry	500,000
May 5, 1995	Northern Pike	Fry	500,000
May 23, 1994	Walleye	Fry	500,000
May 15, 1993	Walleye	Fry	500,000
May 26, 1983	Walleye	Fry	100,000
Jul 8, 1982	Yellow Perch	Adult (>30 cm)	5,000
May 20, 1982	Walleye	Fry	100,000
Jul 6, 1979	Yellow Perch	Adult (>30 cm)	10,200
May 30, 1979	Walleye	Fry	50,000
May 14, 1979	Northern Pike	Adult (>30 cm)	350
Jul 7, 1978	Yellow Perch	Adult (>30 cm)	2,500
Jul 6, 1977	Yellow Perch	Adult (>30 cm)	6,000
Apr 18, 1977	Northern Pike	Adult (>30 cm)	3,000
Jul 5, 1975	Yellow Perch	Adult (>30 cm)	5,000
Jul 7, 1970	Yellow Perch	Adult (>30 cm)	6,000
May 2, 1970	Northern Pike	Adult (>30 cm)	1,000
Apr 21, 1969	Northern Pike	Adult (>30 cm)	950
Jul 10, 1968	Yellow Perch	Adult (>30 cm)	3,500
Apr 18, 1968	Northern Pike	Adult (>30 cm)	600
Apr 26, 1967	Northern Pike	Adult (>30 cm)	840
May 16, 1963	Walleye	Egg	500,000
May 26, 1959	Walleye	Egg	500,000
May 14, 1957	Walleye	Egg	1,000,000
—	Walleye	Fry	200,000
—	Walleye	Fry	500,000
—	Walleye	Fry	500,000
—	Walleye	Fry	500,000
—	Walleye	Fry	500,000
—	Walleye	Fry	700,000
—	Yellow Perch	>1 year	10,000
—	Walleye	Fry	200,000
—	Walleye	Fry	200,000
—	Northern Pike	Adult (>30 cm)	450
—	Walleye	Egg	100,000
—	Yellow Perch	Adult (>30 cm)	5,000
—	Yellow Perch	Adult (>30 cm)	8,000
—	Northern Pike	Adult (>30 cm)	200
—	Walleye	Adult (>30 cm)	100
—	Walleye	Egg	1,000,000
—	Walleye	Egg	170,000
—	Walleye	Egg	850,000
—	Walleye	Egg	680,000
—	Northern Pike	Adult (>30 cm)	400
—	Yellow Perch	Adult (>30 cm)	5,000
—	Walleye	Egg	510,000
—	Walleye	Egg	510,000
—	Yellow Perch	Adult (>30 cm)	1,000
—	Largemouth Bass	Adult (>30 cm)	25
—	Walleye	Egg	510,000
—	Walleye	Egg	510,000
—	Largemouth Bass	Adult (>30 cm)	105
—	Walleye	Fry	525,000
—	Walleye	Fry	800,000
—	Walleye	Fry	150,000
—	Walleye	Fry	150,000
—	Walleye	Fry	200,000
—	Walleye	Fry	250,000
—	Walleye	Fry	150,000
—	Walleye	Fry	100,000
—	Walleye	Fry	125,000
—	Walleye	Fry	150,000
—	Walleye	Fry	225,000
—	Walleye	Fry	120,000
—	Walleye	Fry	300,000

May 22, 2025

Walleye · Fry

1,400,000

May 15, 2024

Walleye · Fry

1,000,000

May 22, 2023

Walleye · Fry

1,000,000

May 30, 2022

Walleye · Fry

200,000

Oct 20, 2021

Walleye · 12-15 cm

5,639

May 18, 2021

Walleye · Fry

1,300,000

May 21, 2020

Walleye · Fry

1,200,000

Sep 16, 2019

Walleye · Fingerling

303

May 30, 2019

Walleye · Fry

400,000

May 27, 2019

Walleye · Fry

800,000

May 23, 2018

Walleye · Fry

500,000

May 18, 2017

Walleye · Fry

1,500,000

May 17, 2016

Walleye · Fry

700,000

May 19, 2015

Walleye · Fry

1,000,000

May 28, 2014

Walleye · Fry

1,000,000

May 29, 2013

Walleye · Fry

500,000

May 12, 2010

Walleye · Fry

300,000

May 24, 2008

Walleye · Fry

800,000

May 15, 2007

Walleye · Fry

600,000

May 15, 2006

Walleye · Fry

650,000

May 13, 2005

Walleye · Fingerling

600,000

May 27, 2004

Walleye · Fry

600,000

May 28, 2002

Walleye · Fry

400,000

May 29, 1997

Walleye · Fry

450,000

May 9, 1995

Northern Pike · Fry

500,000

May 5, 1995

Northern Pike · Fry

500,000

May 23, 1994

Walleye · Fry

500,000

May 15, 1993

Walleye · Fry

500,000

May 26, 1983

Walleye · Fry

100,000

Jul 8, 1982

Yellow Perch · Adult (>30 cm)

5,000

May 20, 1982

Walleye · Fry

100,000

Jul 6, 1979

Yellow Perch · Adult (>30 cm)

10,200

May 30, 1979

Walleye · Fry

50,000

May 14, 1979

Northern Pike · Adult (>30 cm)

350

Jul 7, 1978

Yellow Perch · Adult (>30 cm)

2,500

Jul 6, 1977

Yellow Perch · Adult (>30 cm)

6,000

Apr 18, 1977

Northern Pike · Adult (>30 cm)

3,000

Jul 5, 1975

Yellow Perch · Adult (>30 cm)

5,000

Jul 7, 1970

Yellow Perch · Adult (>30 cm)

6,000

May 2, 1970

Northern Pike · Adult (>30 cm)

1,000

Apr 21, 1969

Northern Pike · Adult (>30 cm)

950

Jul 10, 1968

Yellow Perch · Adult (>30 cm)

3,500

Apr 18, 1968

Northern Pike · Adult (>30 cm)

600

Apr 26, 1967

Northern Pike · Adult (>30 cm)

840

May 16, 1963

Walleye · Egg

500,000

May 26, 1959

Walleye · Egg

500,000

May 14, 1957

Walleye · Egg

1,000,000

—

Walleye · Fry

200,000

—

Walleye · Fry

500,000

—

Walleye · Fry

500,000

—

Walleye · Fry

500,000

—

Walleye · Fry

500,000

—

Walleye · Fry

700,000

—

Yellow Perch · >1 year

10,000

—

Walleye · Fry

200,000

—

Walleye · Fry

200,000

—

Northern Pike · Adult (>30 cm)

450

—

Walleye · Egg

100,000

—

Yellow Perch · Adult (>30 cm)

5,000

—

Yellow Perch · Adult (>30 cm)

8,000

—

Northern Pike · Adult (>30 cm)

200

—

Walleye · Adult (>30 cm)

100

—

Walleye · Egg

1,000,000

—

Walleye · Egg

170,000

—

Walleye · Egg

850,000

—

Walleye · Egg

680,000

—

Northern Pike · Adult (>30 cm)

400

—

Yellow Perch · Adult (>30 cm)

5,000

—

Walleye · Egg

510,000

—

Walleye · Egg

510,000

—

Yellow Perch · Adult (>30 cm)

1,000

—

Largemouth Bass · Adult (>30 cm)

—

Walleye · Egg

510,000

—

Walleye · Egg

510,000

—

Largemouth Bass · Adult (>30 cm)

105

—

Walleye · Fry

525,000

—

Walleye · Fry

800,000

—

Walleye · Fry

150,000

—

Walleye · Fry

150,000

—

Walleye · Fry

200,000

—

Walleye · Fry

250,000

—

Walleye · Fry

150,000

—

Walleye · Fry

100,000

—

Walleye · Fry

125,000

—

Walleye · Fry

150,000

—

Walleye · Fry

225,000

—

Walleye · Fry

120,000

—

Walleye · Fry

300,000

88 stocking events · Source: Manitoba Waterbody Stocking Records, Manitoba Wildlife and Fisheries Branch (open.canada.ca)