Sherman Reservoir fishing: Smallmouth Bass, Flathead Catfish, White Crappie
Target species: Smallmouth Bass, Flathead Catfish, White Crappie
Boat: 3 ramps and launches on file for this water.
Start here: Launch at Marina Bay, 2 lanes.
The reservoir
Sherman Reservoir covers 2,598 acres in Nebraska, across Sherman County. It is a reservoir: 93.3% of it is 50 feet deep or less; the deepest point measured is at least 63 feet (19.2 m). Our records hold 4 species for this water.
Depth and bottom
Deepest measured point: at least 63 ft (19.2 m). That is the deepest contour line: the bottom goes deeper. 93.3% of the water is 50 feet or shallower. We hold 58 depth contour lines for this water.

- 0–5 ft: 3.3% of the water
- 5–10 ft: 17% of the water
- 10–15 ft: 15.6% of the water
- 15–20 ft: 12.2% of the water
- 20–25 ft: 10% of the water
- 25–30 ft: 8.6% of the water
- 30–35 ft: 8.2% of the water
- 35–40 ft: 6.3% of the water
- 40–45 ft: 6.1% of the water
- 45–50 ft: 6% of the water
- 50–55 ft: 4.4% of the water
- 55–60 ft: 2.2% of the water
- 60–63 ft: 0.1% of the water
3 target fish, led by Smallmouth Bass
- Smallmouth Bass — Feeding water: 60–75°F.
- Flathead Catfish — Feeding water: 70–85°F.
- White Crappie — Feeding water: 65–75°F.
Also recorded here: Common Carp.
Water and conditions
Water clarity runs 1.5–3.7 feet on our readings, averaging 2.7 feet, from 41 readings. Our water temperature readings average 72°F; they do not cover the whole year, so this is not a yearly average. pH averages 8.5. These readings span 2017–2024.
3 ramps and launches on this water
On this water we hold 3 trailer ramps.
- Marina Bay — 2 lanes, lit for night fishing, restrooms. Nebraska Game and Parks Commission.
- Thunder Bay — 2 lanes, lit for night fishing, restrooms. Nebraska Game and Parks Commission.
- Trail #10 — 1 lane, lit for night fishing, restrooms. Nebraska Game and Parks Commission.
Fee and opening hours are blank for all 3 places in this list: 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 3 public ramps are on file, so the launch decides where you fish.
Where this data comes from
- Nebraska Game and Parks — Nebraska Game and Parks: 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.















