What flies are hatching on the Missouri River right now?

Current and seasonal hatches on the Missouri River include Midge, Blue-Winged Olive, Caddis. Use the AI Hatch Advisor on this page for a live, temperature-aware recommendation.

What's the current flow on the Missouri River?

The Missouri River is running at 1,750 CFS at the Near Toston gauge. Readings update every 15 minutes from the USGS Water Services API.

Is the Missouri River fishable today?

Missouri River is outside its fishable window right now. Flow is 1,750 CFS at the Near Toston gauge. Check back when conditions return to the normal range.

Missouri River Fly Fishing Conditions

Live Conditions

Missouri River — Near Toston

Unfishable

1,750CFS

Discharge

3.10ft

Gauge Height

75.7°F

Water Temp

Updated 54 min agoView on USGS ↗

7-Day Flow

↓ Falling

RisingFallingStable

24-Hr Pressure

26.38 inHg · → High/stable

Falling (good)RisingHigh/stable

Voluntary Catch-and-Release Advisory

Water temperature is at or above 65°F. At these temperatures trout are physiologically stressed and have a higher post-release mortality rate. Consider waiting for cooler conditions — early morning or evening — or choosing a tailwater with regulated temperatures.

Local Weather

81°FClear sky

Wind 15 mph26.38 inHg Low & stable

Tough conditions — fish deep

Today

☁️

Overcast

102° / 58°

Tomorrow

☀️

Clear sky

83° / 64°

Mon

🌤️

Partly cloudy

69° / 53°

Tue

☁️

Overcast

79° / 48°

Cold front incoming — go deep with nymphs, surface activity likely slow.

Weather by Open-Meteo · No API key · Updated every 30 min

What should I fish today?

⚡ AI

AI-powered recommendation using today's live flow, temperature, and hatch data.

2

Time of Day

Using: 1,750 CFS · 75.7°F · TRICO SPINNER FALLS

What should I pack?

Rod, flies, tippet, and safety gear specific to today's Missouri River conditions.

🪰 Hatch Calendar

Missouri River · August · Late Summer

Full calendar →

⚪ No tracked hatches in active range at 75.7°F — browse the calendar below for seasonal activity

Select month

JanDec

TRICO SPINNER FALLS (size 22-24) at peak — iconic Missouri trico fishing in the flats. PMDs continue. Caddis evenings. Hoppers (size 8-12) along grassy banks. Selective trout — match phase precisely.

PMDTricoCaddis

🟢 Active · 🟡 Approaching · ⚪ Seasonal only

River Map

Loading map…

USGS Gauge (click for site ID)Fishing Access / SectionScroll to zoom disabled — use map controls

About Missouri River

Big-water tailwater below Holter Dam — Montana's most consistent year-round fishery for trophy rainbows and browns. Stable flows, prolific hatches, and miles of wadeable riffles between Craig and Cascade.

MidgeBlue-Winged OliveCaddisPale Morning DunTrico

Regulations

Catch-and-release only in the wild trout section below Holter Dam, with artificial lures only in designated stretches. Montana fishing license required. Verify current regs at fwp.mt.gov before fishing.

Learn More

Guides to help you fish Missouri River with more confidence.