Lava Lake Fishing near Big Sky, Montana

• Overview

  Set in Madison County, Lava Lake is a Montana water. Elevation runs to 7,103 feet. It runs to roughly 47 acres — big enough to hold fish away from the bank, small enough to learn. On our Madison County list it sits near the top for size. Big Sky at 8.7 miles is the nearest place to stop. Then Four Corners, 20 miles, and Bozeman, 23 miles. It sits well inside its county, with no border complications.

• Where to Fish on Lava Lake

  Our records carry no depth, so judge it from the bank. Weed, then depth: that is the order to fish a water of this kind. Bays and points beat straight shoreline every time on water like this. Public occurrence data for Madison County names rainbow trout, brown trout, mountain whitefish, brook trout and california golden trout. These are county-wide records, so not all of them will be in this water. On Lava Lake the quiet end is the one worth the extra effort.

• Seasonal Patterns

  Averages move between 19°F in January and 58°F in July. Cold winters and warm summers give a wide working range. Ice-out usually falls in early May, and the weeks after it fish hardest. Averages place the thaw at early May and the freeze at mid November. Early summer and early autumn carry the open-water season. Expect Lava Lake to follow that timing.

• Tackle & Baits

  Whether the bank is open is not something our records settle. No built facilities appear in mapping around this water. Trout here take small spinners, spoons and, where fly water allows, a nymph or dry. Where the road in crosses private land, ask first. Some ground is open by custom rather than by right, so tread carefully. If the gate is shut, Jumbo Lake at 1.2 miles is the nearest alternative. Rules at Lava Lake are worth checking on the day.