Colby Lake fishing: Northern Pike, Largemouth Bass, Walleye

Colby Lake fishing: Northern Pike, Largemouth Bass, Walleye

Target species: Northern Pike, Largemouth Bass, Walleye, Channel Catfish, Burbot, Shorthead Redhorse, White Sucker
Boat: 1 ramp or launch on file for this water.
Start here: Launch at Colby Lake Public Water Access Site, 2 lanes.

The lake

Colby Lake covers 507 acres in Minnesota, across St. Louis County. It is a lake: 95.4% of it is 22 feet deep or less; the deepest point measured is at least 30 feet (9.1 m). Our records hold 14 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.
• Walleye — Feeding water: 50–75°F.
• Channel Catfish — Feeding water: 70–85°F.
• Burbot — Feeding water: 40–50°F.
• Shorthead Redhorse — Feeding water: 60–75°F.
• White Sucker — Feeding water: 50–70°F.

Also recorded here: Black Crappie, Bluegill, Rock Bass, Yellow Perch, Pumpkinseed, Brown Bullhead, Yellow Bullhead.

Depth and bottom

Deepest measured point: at least 30 ft (9.1 m). That is the deepest contour line: the bottom goes deeper. 95.4% of the water is 22 feet or shallower. We hold 70 depth contour lines for this water.

• 0–2 ft: 12.6% of the water
• 2–4 ft: 14.7% of the water
• 4–6 ft: 10.9% of the water
• 6–8 ft: 8.9% of the water
• 8–10 ft: 9.6% of the water
• 10–12 ft: 7.8% of the water
• 12–14 ft: 7.1% of the water
• 14–16 ft: 6.4% of the water
• 16–18 ft: 5.7% of the water
• 18–20 ft: 6.1% of the water
• 20–22 ft: 5.6% of the water
• 22–24 ft: 3.1% of the water
• 24–26 ft: 1.5% of the water

Water and conditions

Water clarity runs 2–4.1 feet on our readings, averaging 3 feet, from 60 readings. Our water temperature readings average 67°F; they do not cover the whole year, so this is not a yearly average. The coldest single reading we hold is 46°F and the warmest is 79°F; the warmest monthly average is 74°F. pH averages 7.2. These readings span 2016–2025.

1 ramp or launch on this water

On this water we hold 1 trailer ramp.

• Colby Lake Public Water Access Site — 2 lanes, restrooms.

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.

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.