In this report
Flow below the dam: tighter than ideal, and it matters
The gauge is sitting at 87 CFS—13 points below the bottom of Dream Stream’s productive window. That’s not catastrophic, but it’s honest to call it marginal for this specific water. At 87, you lose some of the column depth that usually lets you fish a true nymph rig with confidence; the current is thinner, which means your drift control gets squirrelly faster and your flies lose vertical range. More important: low flow concentrates fish into the best remaining holding water. They’re pickier, they spook easier in the open meadow, and they see your line.
Water temp is holding at 47°F—still safe for extended sessions, especially if you’re not dredging a kokanee spawning area—but the chill and the thin current together mean fish are less aggressive. They’re keying on exact sizes and presentations rather than grabbing attractors out of reflex.
If you’re planning a session, plan for precision over volume, and expect a smaller margin for error in your casting and mend.
Kokanee and redds: check before you go
This is October, and kokanee salmon are running and spawning throughout the Dream Stream system. Portions of the river may be posted closed to protect spawning habitat—there’s no single closure boundary I can give you, but access restrictions from mid-September through year-end are real and seasonal. Before you load the car, check the current postings at the access area. If sections are open, stay off visible redds: those dark, cleaned pockets in the gravel are redds, and walking over them or fishing directly above them disrupts a spawning run that will never come back.
Browns are also moving upriver and into early spawning mode. Respect them the same way.
What’s in the water: midges and BWO in the margins
October on tailwater means midges are your bread and butter—they’ve been consistent all year and they’ll keep working through November. The secondary player is the fall Baetis, the small Blue-winged Olive, showing up on gray or overcast days in sizes #20 and #22. At 87 CFS and 47 degrees, neither hatch is explosive, but both are present and fishable.
For midges, go with what works on Dream Stream year-round: #20–24 emergers and pupae in black, olive, and tan. A Mercury Midge or Black Beauty in #22 is a standby. Zebra Midges in #20–22 are effective. Tie a few RS2s in #22–24 as well—the slim profile and tight segmentation matter when fish are picky. You’ll occasionally see a midge dry late morning or early afternoon, but emergers and pupae will catch more fish, more consistently.
The Baetis will show on gray mornings and through midday if clouds build. A small #20–22 BWO emerger fished subsurface will outfish a dry unless you actually see risers, which at 87 CFS and this water temp is not guaranteed.
Rigging for low water and precision
At 87 CFS, your nymph rig needs to be compact and controlled. Here’s what works:
Main rig: Start with a heavier anchor fly—a Barr’s Kaufmann’s Stone in #14 or #16 (a conehead works, or a standard weighting) tied to your main tippet. Eighteen inches above it, add a #22 Mercury Midge or RS2 emerger on a 4–5 inch dropper of 5X. This gives you bottom contact and a secondary that rides in the column just above the substrate.
Weight placement: Pinch a split shot two feet up from the stone—you want the stone to feel rocks but not hang constantly. At 87 CFS, you’re not bouncing hard; you’re ticking and drifting. If you’re fishing the thin slots between deeper pockets, one split shot is usually enough. If you’re in slightly deeper runs, add a second shot 18 inches higher.
Tippet: Use 4X on your main leader down to the stone anchor, then 5X for the dropper. At this flow and this coldness, fish aren’t leader-shy, but 5X gives you the thin diameter to make small flies behave naturally without drag. A 9-foot 4X leader is fine; you don’t need to extend it further unless you’re casting into spooky, flat water.
Indicator vs. tight-line: Tight-line works better here. At 87 CFS, an indicator will actually slow your drift and make you work harder to stay on bottom. Fish tight to your fly line, focus on the feel of the stone ticking (or not ticking—long dead drifts are normal), and watch for the subtle pause or weight shift that signals a take. You’ll land more fish this way than you would with a yarn indicator at this flow.
Where to spend your time
Don’t waste energy on the long, thin glides. At 87 CFS, they’re too slow and too visible. Focus on the deeper slots and run-outs—anywhere the current has carved a slight trough or there’s a visible speed change. The meadow water means zero canyon shelter, so wind exposure is constant; fish hold tighter to current seams than they would in a freestone. The pocket behind a subtle bank undercut, or where the channel narrows slightly, is gold.
Wade shallow and deliberate. Your footsteps carry through low water. Move slowly between drifts, and don’t cluster your casts in one spot; the meadow is open, and fish spooked from 20 feet away will remember it.
Bottom line
87 CFS is marginal for Dream Stream, not ideal. But the season is prime—kokanee and browns are present, the water is cold enough for fish to hold predictably, and midges are consistent. Expect smaller numbers and bigger selectivity. Go small, fish deep, move slow, and respect the redds. It’s October in the high country: it should be rewarding, and it will be if your presentation is tight.