The morning is the day now. Water at the dam starts in the mid 60s, and every mile downstream subtracts margin. Tricos own the morning and the big browns are eating.

Five days on and the Mighty Mo hasn't blinked: heavy Trico mornings below Holter, nymphing the center seams as the weeds crowd the edges, then evening caddis, with mid-summer heat deciding when you fish rather than whether.

The Mighty Mo is holding a steady midsummer rhythm with Tricos setting the clock: fish the morning window, rest the baking afternoon, and return for an evening caddis bite.

Not much has moved on the Mighty Mo since last week, and on a tailwater in mid-July that steadiness is the whole point. The Tricos that turned on at the start of the month are now a daily event below Holter, and they set the clock for the entire day.

Trico season has arrived on the tailwater below Holter: strong morning hatches, technical fish, and building heat that pushes the day early and late.

The Missouri has settled into its summer rhythm: technical Trico mornings, dependable nymphing, and prolific evening caddis on low, clear, easy-wading flows. Go early or late; holiday traffic is about as heavy as the shops have ever seen.

Mid-season on the Missouri tailwater: lots of fish, lots of bugs, and lots of company. Caddis is the favorite summer dry while Tricos start to show in the mornings, all on a steady, low, clear river of educated, A-game trout.

The Mo is into its dry-fly prime and fishing well, though the PMD hatch is running thinner than usual. Caddis are decent and Tricos are on deck.

The Mo is squarely into its dry-fly prime and fishing well, though the PMD hatch is running a touch thinner than usual. A wet, cool stretch through June 17 and 18 reset the river.

The Mo is squarely into its dry-fly prime and fishing well. A wet, below-average-temperature pattern through late May and early June bumped the river and the regional tributaries to around 3,500 CFS; flows are now back on the drop, sitting near 3,150 CFS at Holter as of June 13.

The Missouri is fishing well and squarely into its dry-fly prime, a few weeks early. Flows are dropping back toward average near 3,160 CFS at Holter, and fish are eating heavily.

Rain is the story of the week, with the Missouri bumping to 3,500 CFS and now dropping back toward 3,300 to 3,400. The tributaries have cleared, the Dearborn is adding a liked green tint downstream, and the PMD and caddis hatches are both on in force. Heavy June traffic at Craig means go early or go late.

A week of much-needed rain greened things up, and the Missouri is squarely in prime time. PMDs are the headline act in full peak about a month into their run, caddis have arrived in numbers driving strong evening dry-fly action, and the Dearborn has bumped back to life. Crowds are heavy, so go early or go late.

The Mo is fishing well across all reaches, with flows settling back near 3,400 CFS after a rain bump and a green tint downstream from the Dearborn. It is prime time: the PMD hatch is a few weeks early and in full swing, with caddis building. Craig and the ramps are busy, so plan around the crowd.

The unseasonably cool, wet pattern that closed out May is still running the show, with the Mo bumped over 3,500 CFS and now dropping back near 3,400. PMDs are well underway, and the cool weather has the shops optimistic the early start means bonus time rather than an early end. Early terrestrial fishing is paying off on the right day.

Early summer has arrived ahead of schedule, with the river holding in the 3K club and acting more like a freestone in this low-water year. PMDs are in their historical main-event window right now, caddis are building, and the fish are eating heavily but getting educated daily. A soaking late-May rain added a touch of color.

Summer conditions are arriving fast and the river is fishing more like a freestone, warming through the day as water moves down from the dam. A warming trend is pushing caddis along while the PMD dry-fly windows open but stay technical. Fish are in their peak metabolic window and eating heavily every day.

The Missouri is acting more like a freestone than a tailwater, with low water driving pronounced daytime warming the further you get from the dam. PMDs are on in numbers, caddis are building, and trout are in their peak metabolic window but increasingly educated. Near-term weather is split between a wet front and a warm-up.

The Missouri is in an early-summer pose, two to three weeks ahead of the calendar, with low water making it behave more like a freestone. Flow has nudged up to 3,300 CFS and the first PMDs are showing alongside fading caddis and BWOs. With western Montana rivers blown out on snowmelt, expect crowds and lead with courtesy on the water.

The Missouri has rolled out of post-spawn into early-summer mode, running two to three weeks ahead of schedule. Water has jumped five degrees in a week to 53°F, caddis have just arrived in force, and the first PMD noses are showing. Flows are easing near 3,150 CFS.