Rock Lake fishing: Northern Pike, Largemouth Bass, White Sucker

Target species: Northern Pike, Largemouth Bass, White Sucker, Black Crappie, Bluegill, Yellow Perch, Pumpkinseed
Boat: 1 ramp or launch on file for this water.
Start here: Launch at Rock Lake Public Water Access Site, 1 lane.

The lake

Rock Lake covers 254 acres in Minnesota, across Cass County. It is a lake: 92.5% of it is 13 feet deep or less; the deepest point measured is at least 15 feet (4.6 m). Our records hold 10 species for this water.

7 target fish, led by Northern Pike

  • Northern Pike — Feeding water: 50–75°F.
  • Largemouth Bass — Feeding water: 65–85°F.
  • White Sucker — Feeding water: 50–70°F.
  • Black Crappie — Feeding water: 65–75°F.
  • Bluegill — Feeding water: 70–85°F.
  • Yellow Perch — Feeding water: 45–75°F.
  • Pumpkinseed — Feeding water: 65–80°F.

Also recorded here: Bowfin, Brown Bullhead, Yellow Bullhead.

Depth and bottom

Deepest measured point: at least 15 ft (4.6 m). That is the deepest contour line: the bottom goes deeper. 92.5% of the water is 13 feet or shallower. We hold 24 depth contour lines for this water.

  • 0–1 ft: 13% of the water
  • 1–2 ft: 9.7% of the water
  • 2–3 ft: 8.3% of the water
  • 3–4 ft: 7.8% of the water
  • 4–5 ft: 8.2% of the water
  • 5–6 ft: 7.9% of the water
  • 6–7 ft: 5.6% of the water
  • 7–9 ft: 9.5% of the water
  • 9–11 ft: 10.5% of the water
  • 11–12 ft: 6.2% of the water
  • 12–13 ft: 5.8% of the water
  • 13–15 ft: 7.7% of the water

1 ramp or launch on this water

On this water we hold 1 trailer ramp.

Red Rock Lake Des Moines River.jpg
U.S. Army Corps of Engineers, photographer not specified or unknown · Public domain
  • Rock Lake Public Water Access Site — 1 lane, restrooms. DNR Division of Forestry.

The place listed has no fee or opening hours on file: a blank means we hold no such field, not that it is free or always open, and this list may not be complete.

Water and conditions

Our water temperature readings average 73°F; they do not cover the whole year, so this is not a yearly average. pH averages 8.5. These readings span 2020–2023.

Red Rock Lakes National Wildlife Refuge- Ducks on Lower Red Rock Lake (53070244027).jpg
YellowstoneNPS · Public domain

What is hard here

With 92.5% of the water 13 feet or less, low level turns the flats into hazards. Only 1 public ramp is on file, so the launch decides where you fish.

Where this data comes from

  • Minnesota DNR — Minnesota DNR: depth contours: class A, a survey of the bottom.
  • Minnesota DNR — Minnesota DNR: reported depths: class B, a depth figure measured and published by an agency, without a bottom map.
  • Webster, K.E., McCullough, I.M., Soranno, P.A. LAGOS-US DEPTH v1.0, EDI, doi:10.6073/pasta/64ddc4d04661d9aef4bd702dc5d8984f (CC BY 4.0); Cheruvelil et al. LAGOS-US LOCUS v1.0 (EDI) — LAGOS-US DEPTH v1.0: Lake depth for 17,675 lakes in the conterminous U.S.: class B, a depth figure measured and published by an agency, without a bottom map.