As of April 29, Rock Creek near Missoula is holding in a classic late-April spring pattern: cold, moderately elevated, and fishable—but still technical. The USGS gauge near Clinton is currently reading around 1,100–1,200 cfs at roughly 6.4 ft, with water temperatures in the 41–43°F range. Conditions are slightly bumped from earlier in the week, and while the creek remains very fishable, it’s a bit more off-color than it was during the previous window.

Despite the changing conditions, Rock Creek continues to produce. Angler pressure has noticeably increased, especially on the more accessible stretches, but there are still plenty of fish willing to eat. Flows are holding steady, and while clarity has dipped slightly, it’s still in good enough shape to support a mix of techniques throughout the day.

Bug activity is trending upward, with Blue-winged olives, March Browns, Gray Drakes, and some Caddis are present. These hatches are bringing occasional fish to the surface, particularly during the warmer parts of the afternoon. While dry fly action isn’t lights-out, anglers covering water and targeting softer seams and tailouts can find fish willing to rise during peak hatch windows.

Nymphing remains the most consistent approach. With the slightly higher flows and reduced clarity, running a heavier indicator setup is key to getting flies down into productive water. Patterns like Double Bead Stones, Pat’s Rubber Legs, and TJ Hookers, paired with a smaller trailing nymph, perdigon, or worm, are all producing. Focus on deeper runs, pocket water, and softer holding areas where fish are sheltering from the current.

Streamer fishing has also stayed productive under these conditions. Target structure with heavier patterns like Woolly-Headed Sculpins, Mini Dungeons, and Woolly Buggers. Fish them slow and tight to banks, undercuts, and through deeper pockets. On brighter days or in slightly clearer stretches, incorporating a bit of flash can help trigger more aggressive strikes.