North Twin Lake fishing: Muskellunge, Northern Pike, Largemouth Bass

Target species: Muskellunge, Northern Pike, Largemouth Bass, Walleye, Channel Catfish, Sunshine Bass

The lake

North Twin Lake covers 453 acres in Iowa, across Calhoun County. It is a lake: the deepest point measured is at least 11 feet (3.4 m). Our records hold 7 species for this water.

6 target fish, led by Muskellunge

  • Muskellunge — Feeding water: 65–75°F.
  • 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.
  • Sunshine Bass — Feeding water: 70–80°F. Nonnative.

Also recorded here: Common Carp.

Stocking: 10,468,620 fish, 2012–2025

Iowa DNR records list 10,468,620 fish released into this water from 2012 to 2025.

Aerial imagery: USDA NAIP 2023
USDA Farm Service Agency, NAIP 2023 aerial imagery (USGS The National Map) · Public domain
  • Walleye: 9,768,828 in 2012–2025
  • Northern Pike: 647,967 in 2012–2021
  • Largemouth Bass: 11,536 in 2019–2024
  • Channel Catfish: 10,865 in 2012–2024
  • Muskellunge: 1,159 in 2022–2025

One more species on the stocking list.

Depth and bottom

Deepest measured point: at least 11 ft (3.4 m). That is the deepest contour line: the bottom goes deeper. We hold 63 depth contour lines for this water.

  • 0–2 ft: 0.8% of the water
  • 2–4 ft: 6.8% of the water
  • 4–5 ft: 5.5% of the water
  • 5–6 ft: 6% of the water
  • 6–7 ft: 6.5% of the water
  • 7–8 ft: 7.4% of the water
  • 8–9 ft: 9.9% of the water
  • 9–10 ft: 16.2% of the water
  • 10–11 ft: 40.9% of the water

Water and conditions

Our water temperature readings average 76°F; they do not cover the whole year, so this is not a yearly average. pH averages 8.5. These readings span 2017–2024.

Where this data comes from

  • Iowa DNR — Iowa DNR: depth contours: class A, a survey of the bottom.
  • EPA NLA — EPA National Lakes Assessment: 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.