Rock Lake fishing: Walleye, Bigmouth Buffalo, Channel Catfish

Target species: Walleye, Bigmouth Buffalo, Channel Catfish, Black Bullhead, White Sucker, Black Crappie, Bluegill
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 372 acres in Minnesota, across Lyon County. It is a lake: the deepest point measured is at least 6 feet (1.8 m). Our records hold 11 species for this water.

7 target fish, led by Walleye

  • Walleye — Feeding water: 50–75°F.
  • Bigmouth Buffalo — Feeding water: 70–80°F.
  • Channel Catfish — Feeding water: 70–85°F.
  • Black Bullhead — Feeding water: 70–80°F.
  • White Sucker — Feeding water: 50–70°F.
  • Black Crappie — Feeding water: 65–75°F.
  • Bluegill — Feeding water: 70–85°F.

Also recorded here: Yellow Perch, Green Sunfish, Orangespotted Sunfish, Common Carp.

Depth and bottom

Deepest measured point: at least 6 ft (1.8 m). That is the deepest contour line: the bottom goes deeper. We hold 17 depth contour lines for this water.

  • 0–2 ft: 5.7% of the water
  • 2–4 ft: 10.7% of the water
  • 4–5 ft: 8.2% of the water
  • 5–6 ft: 75.4% 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. DNR Division of Parks and Trails.

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 8.7. These readings span 2017. The latest reading is from 2017, more than three years ago: read these numbers as history, not as the water today.

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

What is hard here

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.