Gneiss Lake Fishing Guide, Madison County, Montana

• Overview

  Gneiss Lake lies within the bounds of Madison County, Montana. The land about it is mixed forest. About 4 acres of surface, which puts the far bank inside easy sight. It is high ground by Montana standards. The town to know is Whitehall, 25 miles out. It is 171 miles to Billings, the nearest city. Within a short run: Upper Branham Lake 0.9 miles, Triangle Lake at 1.4 miles, Oval Lake 1.6 miles, Rossiter Lake at 3.2 miles and Cliff Lake 3.4 miles. One jurisdiction covers this water end to end.

• Where to Fish on Gneiss Lake

  Depth is not on record here, which means reading the ground instead. This is a lake, so the margins and the first drop matter most. On a natural lake the weed line and the shelf beyond it do the work. County-wide records name rainbow trout, brown trout, mountain whitefish and brook trout. It is the county picture; the agency list is water-specific. At Gneiss Lake the water rewards a slow, careful approach.

• Seasonal Patterns

  Between January at about 17°F and July at about 51°F, the water has a wide range to work through. Winter closes the water for a while, and the reopening is worth catching. Winter locks it down, and late May brings it back. Break-up near late May, freeze-up near early November: that is the shape of an average year. Spring is short and heavy here; autumn is longer and steadier. Plan any trip to Gneiss Lake around it.

• Tackle & Baits

  There is no clear statement anywhere on who can fish it. Mapping shows an empty shoreline: no ramp, no jetty, no marked entry. For the trout, small spinners and a box of nymphs cover both approaches. Where access is informal, keep it that way by behaving. Keep proof of licence with you rather than in the car. Upper Branham Lake at 0.9 miles is the sensible second choice. Ask locally about Gneiss Lake if anything is unclear.