Here is the lowdown on the Missouri River’s legendary “Land of the Giants” stretch, translated from Jeff Lattig at Living Water Guides on June 22, 2026.
The Cheat Sheet: Water & Weather
- The Flow: Hauser Dam is spitting out a steady 3,000 CFS (Cubic Feet per Second) — which is right in the sweet spot.
- The Thermometer: Water temps are sitting at a crisp 54°F. The fish are comfortable, active, and hungry.
- The Verdict: June has officially entered the chat, and it brought a massive party of bugs with it.
1. Below Hauser Dam: The PMD Party
The Pale Morning Duns (PMDs) are throwing a full-blown festival, and the dry fly fishing is absolutely firing.
- The Shift: Mornings are for dredging the bottom with nymphs. But as the afternoon sun hits, the bugs get moving, the trout pull a magic trick and suspend mid-water, and the “slicks” (smooth water surfaces) come alive with rising fish. If you know the sneaky hiding spots, you can park it and watch trout stack up like a drive-thru lane.
- The Menu:
- Sub-surface (Sizes 16–18): Sow Bugs, PMD Split Cases, S&M Nymphs, Frenchies, and TNT PMDs.
- On top: PMD Cripples and Rusty Spinners.
- Coming soon: Caddis and tricos are warming up in the bullpen, and hopper season is right around the corner.
2. Holter Reservoirs: Cruising for Callibaetis
Over on Upper and Lower Holter, the Callibaetis mayflies are popping off in the late mornings.
The Strategy: The dry fly window here can be brief, so your timing needs to be sharp. Work the weed beds and depth transitions. If you match the hatch with a small Chubby Chernobyl, a classic Adams, or a Callibaetis Spinner, you have a very real shot at fooling a massive, hard-charging lake-run trout looking at the ceiling.
3. The Pike Wildcard: High Risk, High Reward
For the anglers who prefer to chuck massive streamers and strip until their shoulders ache, Jeff has been mixing in some morning Northern Pike hunts.
The big females have officially vacated the shallow weed beds and moved to deeper real estate just off the drop-offs. They are definitely trickier to track down right now, but a shot at a 20-pound water wolf makes the blind casting totally worth it.
4. Getting There: Jet Boats Only
This isn’t your average walk-and-wade trip. Jeff and the crew launch the jet boats from the Gates of the Mountains Marina to blast up into the Land of the Giants. Because it’s a highly restricted, permit-only zone for a select few outfitters, you get pristine water without the bumper-to-bumper angler traffic.
The Outlook: It’s only going to get buggier and better as summer rolls on. Jeff’s calendar is almost entirely packed, but a few late-summer slots are still floating around if you want to get in on the action.
Photo credit: Jason Maxwell with a nice rainbow from Holter Reservoir
