
Montana · Fishing
Alder, Montana sits in the Ruby Valley at roughly 5,100 feet, and the fishing here centers on two very different types of water. The Ruby River is the main draw for fly anglers, with the Alder Access point putting you on a moderate stretch that holds both brown trout and rainbow trout.
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Alder, Montana sits in the Ruby Valley at roughly 5,100 feet, and the fishing here centers on two very different types of water. The Ruby River is the main draw for fly anglers, with the Alder Access point putting you on a moderate stretch that holds both brown trout and rainbow trout. Browns tend to run larger and hold in deeper cuts and undercut banks, while rainbows are more likely to be found in faster riffles. A short drive from the river access, Ruby Reservoir offers a quieter lake fishing option when the river is running high or off-color from runoff. The Vigilante Cabin listing adds a river fishing base for those who want to stay close to the water rather than commute from town. The Ruby Valley doesn't get the same shoulder-season crowds as the Madison or Gallatin drainages, which means you can often find good water without fighting for a pullout. That said, the Ruby is a smaller system, so water conditions and flows matter more here than on bigger rivers — checking conditions before you drive out is worth the extra five minutes.
The Ruby River at the Alder Access holds brown trout and rainbow trout. Browns are typically the larger fish and tend to favor slower, deeper water and structure like undercut banks, while rainbows are more active in riffles and faster runs.
The Alder Access stretch is rated moderate, so it's a reasonable fit for intermediate fly anglers who are comfortable reading moving water and making accurate presentations. Beginners can manage it, but you'll get more out of the day if you already have basic mending and drift skills dialed in.

Axolotl Cabin
~17 min drive
A worthwhile stop near MT.

Henneberry House
~1h 2m drive
A worthwhile stop near MT.
Ruby River - Alder Access
~16 min drive
Moderate
Kobayashi Beach
~45 min drive
A worthwhile stop near MT.
Beaverhead River - Henneberry Access
~47 min drive
Hard
Fisherman's Point
~1h 23m drive
A worthwhile stop near MT.

Vigilante Cabin
~22 min drive
A worthwhile stop near MT.
Ruby Reservoir
~6 min drive
A worthwhile stop near MT.
Madison River at Varney Bridge
~43 min drive
Moderate

Wall Creek Cabin
~36 min drive
A worthwhile stop near MT.
Blue Lake
~15 min drive
A worthwhile stop near MT.
Gallatin River - Greek Creek Access
~1h 12m drive
Moderate
Also worth it near here
Late summer and early fall are generally the most productive windows on the Ruby River, after spring runoff has cleared and flows have dropped to fishable levels. Early morning and late afternoon are the most reliable times of day, especially during warmer months when midday heat pushes fish off the feed.
Ruby Reservoir is a solid alternative when the river is blown out from runoff or after heavy rain. It's also a better option if you're fishing with kids or anyone who prefers bank fishing or still water over wading a moving river.
Yes, a valid Montana fishing license is required to fish any of these waters. You can purchase one online through Montana Fish, Wildlife and Parks or at local sporting goods retailers. Make sure to check current regulations for the Ruby River, as specific rules around catch limits or gear restrictions can apply to individual river sections.