Bitterroot Lake ice has shrunk significantly with warm weather and wind. The north end county access is now 4–5 inches, the reeds are open water, and the south end boat access has open water at the ramp. No machines. Mandatory check-in at the Hilltop Hitching Post.

Bitterroot Lake is fishable heading into Margo’s March Madness Fishing Derby (Feb. 28–March 1). As of Feb. 25, 2026: no snow on the ice, mostly clear visibility, and roughly 5–5.5 inches of ice in most areas (about 8 inches at the north-end county boat ramp). Still, watch for pressure ridges and cracks—and remember mandatory check-in at Hilltop Hitching Post before you fish.

The 3rd Annual Margo’s March Madness Fishing Tournament takes place February 28 and March 1, 2026, at Bitterroot Lake, promoting community, family fun, and honoring Denise Schlegel.