Gearing Up for the Firehole

Mike Cline

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A few days to go until the Memorial Day weekend opener in Yellowstone. The most fishable river the 1st weekend is always the Firehole and it does draw some attention in early June. A few years back I started filling fly boxes specifically tailored to specific waters and specific times of the year. I just completed my three Firehole (June) boxes in anticipation of the opener next weekend.
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One box is dedicated to the big weightless streamers (Pine Squirrel Buggers) I’ll use in the deep sections with my precious Sage XP 590 2-piece and a SONAR 25 Cold sink tip spooled on a Ross Evo R. Great setup that is perfect for the dozen or so extremely deep sections of the Firehole. I will start exploring these deep sections during the twilight of pre-dawn.
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The second box contains some smaller streamers (Mini-zonker, Firehole Demons, Soft hackle streamer, etc). These can be used both on the Sage XP or the other rod I’ll tote to the park, my Scott GS 884. I use a Ross Evo LTX on the Scott spooled with an SA Amplitude Creek Trout. This rod is versatile enough to handle the smaller streamers on a longer leader as well as the traditional bugger/soft hackle rig so often used on the Firehole. It is also ideal for any dry fly activity I might want to try. The third box is really dedicated to the bugger/soft hackle approach while containing a few essential dries.
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As I write this the Firehole at Old Faithful is ~75 CFS (which is a very fishable number). But it's tough to tell whether will get another bout of run-off after the warm week we will have. There is still plenty of snow showing on the hillsides on the Old Faithful webcam and it's got to go somewhere. Nighttime lows in the park aren’t going much below freezing so we should see a bump in flows on the Firehole. High tea-colored water might be haram for the dry fly types, but it's perfect for the big streamers. So with fresh bear spray at my side the Memorial Day tradition on the Firehole will commence soon. After Memorial Day I suspect I'll be making the 240 mile round trip to the park several times in June despite the high fuel costs. Can't keep the fish waiting.
 
Should be a good time! Not sure how I feel about some of the new fishing regulations in YNP.
@MT406 - What concerns you about new YNP regulations?
 
Gonna be a soaker. Rain off and on today and tomorrow. Then Sunday and Monday we could see an inch each day.

Could we save some of this precip for August?

Thanks.
 
Gonna be a soaker. Rain off and on today and tomorrow. Then Sunday and Monday we could see an inch each day.

Could we save some of this precip for August?

Thanks.
As is tradition, memorial day weekend and the start of rose festival here in Portland means monsoon season. Surprised that much rain is making it over to montana!
 
Gonna be a soaker. Rain off and on today and tomorrow. Then Sunday and Monday we could see an inch each day.

Could we save some of this precip for August?


One can always hope for a decent flood on Memorial Day - keeps the minions off the water and raises the probability of tagging a big brown. High tea-colored waters makes them less shy and more aggressive. Firehole hit 150+ CFS this morning and it should go higher with the rain and run-off. Great for big streamers.

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@MT406 - What concerns you about new YNP regulations?
I see the Yellowstone now opens July 1, instead of July 15 as its been forever. This allows fishing while there are more fish in the river that have not yet migrated back to the lake. A little surprised by that given the YCT's ongoing recovery from the '88 fires, lake trout, etc. Other than that didn't see major changes.
 
Oh and curious, how was the Firehole? My wife took the kids for a drive Sat through the park and said she saw a few fishermen. She also said it POURED coming out through West Yellowstone.
 
Oh and curious, how was the Firehole? My wife took the kids for a drive Sat through the park and said she saw a few fishermen. She also said it POURED coming out through West Yellowstone.
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A better part of valor, I postponed my Memorial Day trip to the Firehole by one day. Monday was a tricky weather day with a significant snow storm hitting the south end of Gallatin County and the park. Driving Gallatin Canyon in the dark during a snowstorm is not the wisest move. The plethora of small white crosses that adorn the guard rails as you move through the canyon remind you it a dangerous drive in increment weather. Instead made the 1st trip on Tues. 0300 wake up in Bozeman and on the road by 0330. Made the park entrance by 0500. Inside the park the roads were empty and the bison bedded down. Got on the river at Biscuit Basin by 0545. River was still high and tea-colored but had been higher two days before. Clear evidence it had breached it banks in places. The meadow was awash in water. Lots of snow on the hillsides and still some patches in the meadow. Ended up making three passes along a ½ mile of river that flows thru the Biscuit Basin meadow. In my experience this stretch of the Firehole holds the largest browns above Firehole Falls.

On the first pass, I used several difference Pine Squirrel Buggers, all of which produced brown trout. At least a dozen in the first pass. The air temp was 33 degree when I started but the wind was calm. Took about two hours to cover the ½ mile of river. By the time I reached the end, the wind had freshened and I needed a break. After 20 minute break for a bit of breakfast and coffee I was back on the river with a new pattern, the soft hackle streamer. No matter which color I used, the pattern produced trout. This time a few rainbows in the mix. For the final pass, I tied on the Firehole Demon and it produced equally as well. Overall, I suspect I landed 40+ fish in five hours. Nothing big but lots in the 12-14” range.
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Lots of fish came out of undercuts inches from the bank while others mostly came from underneath the prominent bubble line prevalent when the water is high.
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I was on this reach for 5 hours + and there was never another angler in sight. As I drove out of the park there were few anglers on the Firehole that I could see. That said, the park that was empty when I arrived was now bursting with cars and visitors. Midway, 2nd Iron Bridge, and Fountain Flats parking areas were crammed with cars with lines of cars trailing on to the main road. Its tough to fish more than one decent Firehole reach in a day when things crowd up. The Firehole flows have dropped significantly in the last few day because of the cold weather but should trend up again as the weather warms this week and the recent snows melt.

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All in all a great 1st day on the Firehole.
 
I have not seen this but if true, it is a big deal. Chasing lake run browns in the park has always been a highlight and great way to close out the year.

On Saturday, May 28, YNP opens to fishing for the season. This year, the season has been modified slightly and the last day of the 2022 fishing season is October 31st. For as long as anyone can remember, YNP has closed on the first Sunday of November. This change is most likely due to inclement weather, which resulted in YNP closing the West Gate off and on during bad weather. We are a little bummed, to say the least, that last week was always a joy! The other big change to the fishing season is the new opening date for the Yellowstone River in Hayden Valley. For 2022, the Yellowstone will OPEN on July 1st instead of the long-standing July 15th. Mark your calendars folks!”

Big Sky Anglers blog 5/26
 
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