Summer is one of our favorite times to be on the water, but it's also when anglers need to pay the closest attention to river conditions. With hot weather settling into Southwest Montana, several area rivers are now under Hoot Owl Restrictions, and additional waters may be added as water temperatures continue to climb.
The good news? There are still plenty of outstanding opportunities to catch trout—you just need to adjust where, when, and how you fish.
What Are Hoot Owl Restrictions?
"Hoot Owl Restrictions" prohibit fishing from 2:00 p.m. until midnight on designated stretches of river. These restrictions are put in place when water temperatures remain high for several consecutive days and are designed to reduce stress on trout during the warmest part of the day.
Warm water contains less dissolved oxygen, and a trout that's caught and released in those conditions takes much longer to recover. By limiting fishing to the coolest hours of the day, we give these fish a much better chance to survive and thrive.
As of this week, restrictions have expanded to include much of the Big Hole River, Clark Fork River, Lower Beaverhead River, and several other Montana fisheries. Because conditions can change quickly, always check current restrictions before heading out.
Where to Check Current Montana Fishing Restrictions
Before every trip, take a minute to check Montana Fish, Wildlife & Parks' current restrictions page:
Montana FWP Current Waterbody Restrictions
That page is updated as conditions change throughout the summer and is the best source for current closures and Hoot Owl restrictions.
Carry a Stream Thermometer
Even if the river you're fishing isn't under an official restriction, carrying a thermometer is one of the most valuable things you can do this time of year.
Water temperatures can vary dramatically throughout the day. A river that's cool and healthy at 8:00 a.m. may be approaching stressful temperatures by early afternoon.
As a general rule, we recommend:
- Fish early whenever possible.
- Monitor water temperatures throughout the day.
- If temperatures approach 68°F, consider calling it a day or moving to cooler water.
- Don't wait for a mandatory closure to make a good conservation decision.
Sometimes the best fishing decision is simply heading to breakfast a little earlier.
Escape the Heat
One of the best things about living and fishing around Butte is that we have countless options when valley rivers begin to warm.
High-elevation creeks, alpine lakes, and mountain streams often remain significantly cooler throughout the summer, offering healthy trout, eager fish, and far fewer anglers.
There's something special about hiking into a small mountain lake with a 4- or 5-weight rod. Brook trout, cutthroat, and rainbow trout in these waters don't see nearly the pressure of our larger rivers, and they're rarely shy about eating a well-presented fly.
Some of our favorite summer patterns include:
Dry Flies
- Chubby Chernobyl
- Water Walker
- Parachute Adams
- Purple Haze
- Elk Hair Caddis
- Beetle patterns
- Flying Ants
Subsurface
- Woolly Bugger
- Balanced Leech
- Hare's Ear
- Pheasant Tail
- Small Perdigons
Whether you're fishing a beaver pond, a tiny mountain creek, or a crystal-clear alpine lake, simple presentations and a willingness to explore often produce some of the most memorable days of the summer.
Summer Gear We Never Leave Home Without
A few pieces of gear become especially important this time of year:
- Stream thermometer
- Floatant and desiccant for foam flies and dry flies
- Long leaders and fresh tippet
- Lightweight sun hoody with UPF protection
- Wide-brim hat and polarized sunglasses
- Plenty of water and sunscreen
- Bear spray when venturing into the backcountry
A handful of Chubby Chernobyls, Water Walkers, beetles, ants, and a box of confidence nymphs will cover an amazing amount of water during late July and August.
We're Happy to Help
Summer conditions change quickly, and so do the best fishing opportunities. If you're not sure where to go, stop by the shop or give us a call. We'll always give you our honest opinion on where we'd spend the day, what flies we'd carry, and whether it's better to fish a river at sunrise or head for a cool mountain lake instead.
Sometimes the best fishing isn't on the river everyone is talking about—it's on a quiet little creek or alpine lake that's been waiting for you all along.
