Rock Creek Fishing Report: High Water, Small Bugs, and High Hopes, May 18, 2026
Current Flow: ~1,500 CFS (and dropping)
Let’s talk Rock Creek. To put it bluntly: it’s high! But before you unpack the panic, there’s a silver lining—it’s actually staying relatively clear. The creek is currently sitting around 1,500 CFS and is on a downward trend, according to Kingfisher Fly Fishing:
The recent cold snap effectively put the brakes on our dreams of a massive Salmonfly hatch for at least the next week or so. We want ’em. We are practically begging for ’em. But mother nature is playing hard to get.
While we wait for the big bugs to throw their party, here is how you can find some success on the water right now.
Just because the monsters aren’t out doesn’t mean the buffet is closed. We are seeing the “little guys” come off in absolute droves.
- The Timing: Keep your eyes peeled in the afternoons as things warm up, but the real magic is happening in the evening when the sun settles and the wind dies down.
- The Menu: Blue Winged Olives (BWOs) are out consistently, alongside a steady showing of March Browns and a growing number of Caddis. You might even spot the occasional, lonely Drake.
Dry Fly Tactics
It’s not exactly a dry-fly bonanza yet, but if you’re paying attention, you’ll find fish slipping into the softer seams and tailouts to pick off bugs. Be patient, cover water, and keep these on your patch:
Top Dry Choices: X-Caddis, Parachutes, Purple Haze, Beetles, Ants, Last Chance Cripples, and Tilt Wing BWOs.
Let’s be real—nymphing is where the paycheck is right now. With the extra water volume and a little bit of color, getting deep is everything. Leave the lightweight rigs at home. You want to fish deeper runs and pocket water where fish can sit comfortably out of the main current and let the buffet line come to them.
- The Lead Fly: Heavy stuff. Double Bead Stones, Pat’s Rubber Legs, and TJ Hookers.
- The Dropper: Scale it down with a Perdigon, or unashamedly tie on a San Juan Worm if the water looks a little extra turbid.
With a bit of stain in the water, it is prime time to move some aggressive fish. The key here is to fish them slow and tight to structure. Target undercut banks, root wads, and those dark, deep slots.
- Patterns: Sculpin patterns, Mini Dungeons, or a classic Woolly Bugger.
- Pro Tip: If the sun decides to pop out, switch to a pattern with a little extra flash to catch their eye.
Safety First: Wading vs. Floating
With flows hovering where they are, wading can be downright troublesome. Watch your step, don’t take unnecessary risks, and make sure your wading belt is tight.
Floating is open, and right now, the upper sections are definitely fishing better and boasting superior clarity. That said, if you are at the oars, please be extra careful. Row hard and spot-check anything that makes you even a little bit uncomfortable before you plunge through.
Stay safe out there, keep your eyes on the seams, and let’s all collectively do a sun dance to get those big stoneflies moving!
You can find Kingfisher Fly Shop at 926 E Broadway St in Missoula, Montana.
