Fishing Report Updated May 8, 2023

This Boulder River fishing report is valid from May 8 through June 25 or so.

The Boulder is much more likely to become fishable for several days at a time both this week and during “runoff windows” when we enjoy some cool, dry weather in late May and early June than the Stillwater or Yellowstone. Fish stonefly nymphs and streamers. If flows are under about 800cfs, no problem for wading anglers. When flows are higher, rafts offer far better access.

The Boulder will begin dropping out of runoff for good around June 20–25 and remain good for about a month thereafter.

Learn more about fishing the Boulder.

Learn more about our float trips, including on the Boulder.

Boulder River Fishing Report – Relevant Links