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Fly fishing report · West
Missouri River
A Missouri River report for anglers checking Holter Dam flow, Wolf Creek and Craig access, PMD and caddis hatches, rules, and weather.
Check flow & weatherToday's fishing decisionMost live data available
39
Skip today
Do not commit until the safety issue clears.
Red Flag Warning issued August 2 at 11:58AM MDT until August 3 at 3:00AM MDT by NWS Great Falls MT
Best supported approachNo approach recommended
Watch nextRed Flag Warning issued August 2 at 11:58AM MDT until August 3 at 3:00AM MDT by NWS Great Falls MT
Updated Aug 3, 12:48 AM UTCUsually refreshes about every 45 minutes
Red Flag Warning issued August 2 at 11:58AM MDT until August 3 at 3:00AM MDT by NWS Great Falls MT
Safety overrides tacticsNo approach recommended
The active safety or closure reason takes priority over wading, bank fishing, and floating guidance.
Check before you drive
Current flow and weather.
Look at whether the river is rising or falling, then check wind, rain, and storms. These can change both safety and fishing.
Loading current flow and weather.
Before you rely on this report
How current is this report?
Conditions can change quickly. Check these dates before you decide to fish, and open the official source when safety or rules matter.
Priority river · checked more closely for freshness and source changes
- River conditions
- Checked Aug 2, 2026, 8:48 PM
- Fishing guidance
- Reviewed May 31, 2026
- Public access
- No reviewed map pin available
- Rules and closures
- Official rule links checked
High confidence in the current score inputs.
7 sources are listed below for you to open.
3 public access records are listed. Private spots are never shown.
Source checked Jul 30, 2026
Plan your access
Know where you can enter.
These are public parking, launch, trail, or recreation areas—not secret fishing spots. We never show an angler's private pins, notes, or photos here.
- 0
- Shown on map
- 3
- No map pin
Location checkedDescription only
01No map pin
Area description
Holter Dam to Wolf Creek
Upper tailwater reach and primary flow context.
Restrictions and seasonal notes
Use official FWP Fishing Access Sites and public ramps. Private banks are common.
Boat traffic is part of the Missouri experience. Give wade anglers and anchored boats space.
02No map pin
Boat launch
Craig corridor
Core drift-boat, wade, and technical trout planning area.
Restrictions and seasonal notes
Use official FWP Fishing Access Sites and public ramps. Private banks are common.
Boat traffic is part of the Missouri experience. Give wade anglers and anchored boats space.
03No map pin
Boat launch
Wolf Creek Bridge FAS
FWP-listed public access with ramp and site facilities.
Restrictions and seasonal notes
Use official FWP Fishing Access Sites and public ramps. Private banks are common.
Boat traffic is part of the Missouri experience. Give wade anglers and anchored boats space.
How to fish it
A technical tailwater where flow and wind set the day.
The Montana Missouri below Holter Dam is a famous trout tailwater, but it still needs a current plan. Check the gauge, wind, FWP rules, ramps, and hatch timing before choosing a section.
- Use the below-Holter gauge for this page; Cascade and Fort Benton are different river reports.
- PMDs, caddis, tricos, midges, and sowbugs can all matter by season.
- Wind can make good flow feel unfishable, especially from a boat.
- Wade shelves and private banks require careful access choices.
Why the score looks this way
Public alertLowers score
An active alert is in effect: Red Flag Warning issued August 2 at 11:58AM MDT until August 3 at 3:00AM MDT by NWS Great Falls MT. Check public safety sources before going.
FlowHelps score
USGS shows 3,880 cfs with a stable over about 6 hours trend. Today's flow is within the normal seasonal range of 3,280 cfs to 5,070 cfs. Weather, water temperature, and access are the next checks.
SeasonHelps score
Summer: PMDs, caddis, tricos, and dry-fly pods draw technical fishing.
Water temperatureHelps score
USGS water temperature is about 65F, with no heat stop triggered.
Fishing usefulnessHelps score
Skip or simplify when wind makes boat control unsafe, flow changes expose or flood wade shelves, FWP restrictions affect the plan, weed conditions are poor, or ramps and takeouts are too crowded for a clean float.
Read the water
What changes the plan.
The best Missouri days have stable tailwater flow, manageable wind, and a clear hatch or nymphing plan. If wind is heavy or flows change, simplify the float, fish protected banks, or wade a safer shelf.
Stable generation
Dial depth, watch for pods, and match PMD, caddis, trico, or midge activity.
Windy
Fish protected banks, shorter floats, heavier rigs, or streamers where casting stays safe.
Clear flats
Use long leaders, small dries, and patient presentations to feeding trout.
Flow change
Recheck wade shelves, boat position, and nymph depth.
Your trip plan
Know when to go—and when to skip it.
Best flows
Use RiverReports and USGS 06066500 below Holter Dam together. Stable generation is the best platform for depth control and dry-fly pods; sudden flow changes should trigger another wade-safety and boat-position check.
When to skip
Skip or simplify when wind makes boat control unsafe, flow changes expose or flood wade shelves, FWP restrictions affect the plan, weed conditions are poor, or ramps and takeouts are too crowded for a clean float.
Local plan
Start with the below-Holter flow, wind forecast, and one defined ramp or wade access. Then decide whether the day is a nymph-depth exercise, a dry-fly pod hunt, or a streamer bank plan.
Backup water
If the Missouri is too windy, crowded, or flow-shifted, compare the Bighorn for another technical tailwater, the Gallatin for canyon wading, or the Madison for a different west-side trout plan.
Hatches & flies
Bring a flexible box.
TimingWhat to watchUseful flies
Winter to early springMidges, scuds, sowbugs, slow nymphs, and occasional olivesZebra midge, scud, sowbug, Ray Charles, small leech
Fly pattern · report suggests “Zebra midge”Zebra MidgeLook for a very slim tapered thread body, evenly spaced contrasting wire rib, a small bead, and no tail or wing. The reviewed classic is black with silver wire and a silver bead. Red, olive, brown, glass-bead, jig-hook, resin-coated, or tailed forms must remain labeled variations rather than replacing the classic identity.See photos & how to fish it ↗
Fly family · report suggests “scud”Scud Fly PatternsScud patterns typically use a curved hook, tapered dubbed body, shellback, rib segmentation, antennae, and brushed legs. Olive, tan, gray, orange, weighted, bead-body, and pregnant forms remain labeled—not aliases for one recipe.See family guide ↗+ 3 more reviewed guides in the Fly Box May to JulyPMDs, caddis, midges, yellow sallies, and worms during bumpsPMD emerger, sparkle caddis, midge pupa, soft hackle, small worm
Fly family · report suggests “PMD emerger”Pale Morning Dun PatternsPMD names an insect group, not one fly. Pale nymphs, trailing-shuck emergers, upright or low-riding duns, cripples, and spent-wing spinners stay visibly separate.See family guide ↗
Fly family · report suggests “sparkle caddis”Caddis Patterns by StageCaddis is not one fly. Larvae live below, pupae and emergers rise through the column, tent-wing adults ride or move on top, and spent forms create other silhouettes.See family guide ↗+ 3 more reviewed guides in the Fly Box August to OctoberTricos, pseudos, caddis, hoppers, ants, and small baitfishTrico spinner, small BWO, X-caddis, hopper-dropper, sculpin
Fly pattern · report suggests “Trico spinner”Trico SpinnerThe reviewed dry form is extremely sparse and flat, using a black body or thread head and pale spent wing. A weighted Sunken Trico Spinner is a separate variant.See photos & how to fish it ↗
Fly family · report suggests “small BWO”Blue-Winged Olive PatternsBWO describes a hatch group, not one fly. Nymph, emerger, dry, cripple, and spinner profiles must stay separate because they occupy different parts of the water column.See family guide ↗+ 2 more reviewed guides in the Fly Box Late fallMidges, BWOs, scuds, sowbugs, and streamer windowsMidge cluster, BWO emerger, scud, sowbug, black leech
Fly family · report suggests “Midge cluster”Midge Patterns by StageMidge wording can mean a threadlike larva, wing-padded pupa, film emerger, tiny adult, or visible cluster. Those profiles fish at different depths.See family guide ↗Fly family · report suggests “BWO emerger”Blue-Winged Olive PatternsBWO describes a hatch group, not one fly. Nymph, emerger, dry, cripple, and spinner profiles must stay separate because they occupy different parts of the water column.See family guide ↗+ 3 more reviewed guides in the Fly Box 01
Start with depth and speed before changing flies; most nymphing failures are rigging failures.
02
Watch slicks and soft banks for PMD, caddis, trico, or midge pods before wading in.
03
Use reach casts and long leaders on technical dry-fly fish.
04
Streamer fish clouds, wind, and bank structure with a controlled boat or wade angle.
05
Respect boat lanes, wade anglers, private banks, and busy ramp etiquette.
Rules & closures
Check the official rules before you go.
Open the agency page to confirm the exact river section, species, season, tackle rules, limits, and emergency closures.
Official links checkedRules for this river or sectionNo special rule found
We did not find a special rule for this river.
We checked the state source but did not find a clearly supported exception for this river. Check the official rules for the exact section you plan to fish.
Rules checkedJul 30, 2026
Report a correction ↗Always follow the official rule
This summary helps with trip planning. The linked agency rule is the one you must follow.
Updates from anglers
What anglers are seeing.
Recent observations from general areas of Missouri River. We review every update before it appears and never publish exact fishing spots, private access details, or photo locations.
Angler updates are not loading right now.
You can still use the river plan above. Check back later for recent observations from other anglers.
Where this report comes from
Open the sources we checked.
Fishing guidance checked: May 31, 2026
Site check: Jul 14, 2026. We regularly test report links, live scores, flow and weather data, and page loading. The content date changes only when the fishing guidance or its sources change.
flowRiverReports Missouri River below Holter DamflowUSGS Missouri River below Holter Dam 06066500regulationMontana FWP fishing regulationsaccessMontana stream access lawsafetyMontana FWP current waterbody closures and restrictionsaccessFishMT Wolf Creek Bridge FASsafetyNational Weather Service forecast point
Common questions
Before you leave.
What should I check first before fishing the Missouri River?+
Check the below-Holter gauge, wind forecast, FWP rules, ramp plan, and current hatch or weed conditions.
Are there special regulations on the Missouri River?+
Yes. The Holter-to-Cascade corridor has specific trout and non-trout rules that should be checked before fishing.
What flies should I bring for the Missouri River?+
Bring the hatch-chart flies, a few confidence nymphs, and a streamer box. Then adjust for water temperature, clarity, and the insects you actually see.
Can I wade the Missouri River?+
Yes in some shelves and islands, but boats are common and private banks matter. Use official access and watch flows.
When should I skip the Missouri River?+
Skip it when flows are unsafe, temperatures stress trout, wildfire or emergency closures are active, or legal access for the reach is not clear.