In this report
Flow Below Spinney Is Running Thin—and That Changes Everything This Week
At 98 CFS, Dream Stream is sitting just shy of the bottom edge of its 100–250 CFS productive window. That’s not a crisis, and it’s not unfishable—but it’s tight enough that you need to know what you’re up against and how to adjust.
The immediate consequence: fish are concentrated. In low flow on a tailwater this open and exposed, rainbows and cutbows (and the browns that are starting to move upstream in early July) don’t spread across the meadow. They stack in the deepest slots, the marginal seams where current breaks, and anywhere there’s a slight drop or a cushion. Your search pattern needs to shrink. You’re not covering water; you’re mining the obvious lies hard.
Wading is easier at this flow—no high-boot drama, no current pushing you around—but visibility cuts both ways. In the bright sun and thin water, fish see you coming from a mile away. Stay low, keep your shadow off the water, and expect these trout to spook at a poor approach or a sloppy cast. They’re not aggressive; they’re conservative and aware.
Water temperature is the other watch. Thin flow means slower travel time from Spinney to Eleven Mile, and the tailwater doesn’t have canyon shade to keep things cool. By mid-morning on warm afternoons, surface temps can tick up noticeably. That doesn’t mean don’t fish—it means fish early, work the deep slots hard between roughly 6 and 10 a.m., and if you’re out in the afternoon, focus on the areas where you can get your fly down into cooler, deeper water. Fish welfare matters on a full catch-and-release water. Handle quickly, and if a trout is laboring, let it rest in the current before release.
Midges and PMDs—Small, Precise, and Non-Negotiable
Midsummer on Dream Stream means you’re fishing small. The Trico spinner falls have peaked and tailed off by mid-July on most Front Range water, but PMDs (#16–18) are still active, and more importantly for this flow and this week, midges are the throughline.
Right now, a #20–22 black midge or Mercury Midge is your anchor fly—the one you tie on first and fish longest. Don’t overthink it. A dead-simple black emerger or a tiny zebra midge will work all day because it’s always hatching on a tailwater. In low flow, those little bugs are even more critical: they’re the caloric payoff in thin water, and the trout key on them harder.
Fish the midge emerger pattern as your point fly, dead-drifted tight to the bottom in anything deeper than 18 inches. Tie it on 5X or 6X tippet—not because you’re targeting huge fish, but because in skinny water with spooked trout, a finer tippet and a smaller entry hole mean fewer refusals. Droppers work, but they’re less essential in this flow; a single nymph fished deep and tight will outproduce a two-fly rig most of the week.
PMD nymphs (#16–18 emergers, tan or olive) will produce in the mid-morning and late-afternoon windows. These fish are still eating them, but the hatch is quieter than it was in June. Fish a PMD emerger 16 to 20 inches below a small strike indicator, or go tight-line if you’re comfortable reading the take by feel. With split shot or a small anchor fly, you can reach the bottom of the deeper runs without a lot of weight; the low flow means less “bounce” and fewer snags.
Terrestrials (ants, beetles, small hoppers in #12–14) will draw some eats on warm afternoons when the wind gets going across the open meadow, but don’t lead with them yet. They’re supplemental in early July. Save them for the afternoon push if the water goes clear and calm, or if you see insects actually landing on the water.
Rigging and Water-Type Specifics
Here’s what works this week on Dream Stream at 98 CFS:
Setup: #20–22 black midge or Mercury Midge on 6X tippet, no indicator, fished tight-line or with a small indicator 2 feet above the fly. Add a single BB split shot 10–12 inches up the tippet. Cast quartering downstream into the deep slots and seams, and let the fly swing and drift to depth as it moves. Watch the line for hesitation, taps, or drag that shouldn’t be there—that’s your take.
Alternatively, if you prefer an indicator rig (good move in this thin water—easier to see what’s happening), size the indicator appropriately to that tiny fly and weight: a small cork or yarn indicator, and split shot placed closer to the fly so you can actually feel the bottom without that BB dragging visibly on the surface between casts.
Deep slots and marginal seams: These are the priority. On an open-meadow tailwater with low flow, look for any place the water noticeably deepens or darkens. Slots along the banks, bends where the current has cut a trough, and the soft water just downstream of any gravel bar or shallow flats. That’s where your trout are holding. Fish each slot with 3–5 drifts, long and drag-free, before moving.
Shallow flats: Don’t waste time here right now. In 98 CFS with bright sun and no cover, the flats are a highway, not a home. Trout use them to move, not to feed. Fish them only if you’re walking through to reach deeper water, and do it carefully.
Runs with marginal current: The seams where faster water meets slower current are premium. This is where trout in low flow position to intercept food without working hard in the main flow. A midge nymph drifted along that edge will take fish all day.
A Note on Redds and Access
July is not redd season on Dream Stream—that’s a spring and fall affair—but keep an eye toward fall. If you’re planning downstream trips in September or October, know that portions of the river may be posted closed to protect kokanee spawning. Those closures run through December 31st, and they can change week to week based on spawning activity. Check the posted signage when you arrive; don’t assume access based on previous visits.
For this week, access is open and normal. The meadow is fully accessible, the water is fishable, and the trout are there—just concentrated and spooky. Fish small, fish deep, keep your approach tight, and respect the low flow by getting out early and fishing the prime windows. The bite is there; it just requires precision.