← Lake Guide39.52° N · 91.71° W

Missouri

Mark Twain Lake

Mark Twain Lake is a lake in Ralls County, Missouri, with 9,031 acres of largemouth water organized around cover, points, and feeder creeks.

Surface
9,031acres
Primary species
Largemouth
§ 01Today on the water · Mark Twain Lakevia Open-Meteo · 14:15 local
Air temp
79.3°F
Barometric
29.94″
→steady 24h(-0.01)
Wind
10mph
from SW
Moon
Full Moon
day 18.4 · 86% lit

Air conditions sampled near the lake center, not measured on the water · refreshed ~15 min

§ 03Next 3 daysvia Open-Meteo · interpretation
  1. 31
    augMon

    Stable window

    hi 98° · lo 70°

    Anytime through the day. Quiet weather day; lean on seasonal pattern and structure.

    ── light sw wind · settled

  2. 1
    sepTue

    Stable window

    hi 101° · lo 72°

    Anytime through the day. Quiet weather day; lean on seasonal pattern and structure.

    ── light sw wind · settled

  3. 2
    sepWed

    Watch the wind

    hi 104° · lo 76°

    Lean into wind-fed shorelines, all day. Wind drives bait position today; pick the shoreline taking it.

    ── stiff sw wind

§ 04Field notesMissouri

Where it is

Set in Ralls County, Missouri, Mark Twain Lake covers about 9,031 acres. Largemouth relate to cover and structure and keep moving as the season shifts.

Seasonal pattern

Spring. Warming water pulls largemouth toward shallow, protected areas where they stage and spawn; the quickest-warming pockets lead.

Summer. Once the surface heats, fish slide toward deeper edges, shade, and main-body structure, and low light fishes best.

Fall. As water cools, forage and bass return toward shallower water; movement is wide, so covering water pays.

Winter. Activity slows and fish hold deeper near stable water; a slow, deliberate presentation is the steadier read.

Key structure

  • Channel edges and the breaks beside them
  • Shoreline cover near quick depth changes
  • Creek and cove mouths that funnel fish and bait
  • Submerged wood, brush, and laydown cover

Which of these produces tracks the season more than the map.

Forage

Baitfish set the pace on Mark Twain Lake; largemouth hold near the schools and go where they go.

Access

Public launch access is available around Mark Twain Lake; conditions vary with water level, so confirm before a trip.

Regulations

Check current state and local regulations before fishing; limits and seasons can change.

§ 05Sources & field guides

Field guides

Data & references

  • Today's conditions — Open-Meteo, refreshed every ~15 min
  • Moon phase — local astronomical calculation, no external API
  • Lake area, depth, structure — Identity, surface area, coordinates and county/state are from the ProjectD canonical waterbody index (snapshot conus-20260518-v1, group gnis:00766204, a 3-polygon group collapsed to its largest representative). Maximum depth and regulation links were not available from an acceptable source and are intentionally omitted.
  • Regulations — verify current state and local regulations before fishing

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