Lost Island Lake fishing: Northern Pike, Largemouth Bass, Walleye
Target species: Northern Pike, Largemouth Bass, Walleye, Channel Catfish
The lake
Lost Island Lake covers 1,164 acres in Iowa, across 2 counties: Clay and Palo Alto. It is a lake: the deepest point measured is at least 12 feet (3.7 m). Our records hold 5 species for this water.
Stocking: 10,855,181 fish, 2010–2025
Iowa DNR records list 10,855,181 fish released into this water from 2010 to 2025.
- Walleye: 10,728,776 in 2012–2025
- Largemouth Bass: 92,173 in 2013–2015
- Northern Pike: 29,028 in 2010–2019
- Channel Catfish: 5,204 in 2012–2018
Depth and bottom
Deepest measured point: at least 12 ft (3.7 m). That is the deepest contour line: the bottom goes deeper. We hold 51 depth contour lines for this water.

- 0–2 ft: 2.9% of the water
- 2–4 ft: 8% of the water
- 4–6 ft: 6.4% of the water
- 6–8 ft: 5.6% of the water
- 8–10 ft: 9.5% of the water
- 10–11 ft: 11.4% of the water
- 11–12 ft: 56.2% of the water
4 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.
Also recorded here: Silver Carp.
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 8.4. 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.
















