Spring Fed · Limestone · Missouri

Roaring River (Missouri State Park)

Roaring River (Missouri State Park) terrain map

Roaring River is one of Missouri's classic trout parks — a small spring-fed stream bursting out of the Ozark hillside in Roaring River State Park near Cassville, stocked daily with rainbows and run on the state's tag-and-whistle park system that draws crowds the moment the season opens.

Marginal · Rainbow Trout
Trico Spinner · 20-24
Marginallive now
Slow going — pick your moments
Low and clear — careful approach country. Cover and shadow are doing the work today.
80% confidence
What moved it
  • LevelLight rain recentlyNo gauge reading
  • Water temp18.6°C
  • ClarityClear
Today's fly
TS
Trico Spinner20-24
High-confidence seasonal pick
Conditions on the water
Estimate
Level
Light rain recently
No gauge reading
Water temp18.6°C
ClarityClear
Weather24°C
WindS 13 km/h
Pressure1019 hPa
Rain · recent2.4 mm
Rain · ahead0.0 mm

No gauge on this water — readings are regional estimates from weather, not a live gauge.

Water temperature for Rainbow Trout
Warm — slow
19°C est.ideal 1018°C
0°14°28°
How to fish it · for Rainbow Trout
When
Nymphing can work through most of the day.
Where
Cover mixed depths.
Method
Start with tight-line nymphs and adjust if fish rise or drift higher.
Kit
9 ft #4 rod, floating line, 12 ft tapered leader to 4–5 lb fluoro tippet.
Why this works
Water at 18.6°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots.
Hatch timeline · todayPeak at 6am

Hatch predictions

Today's headline hatch shown — see all 5 active hatches hour by hour with Pro.

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Sub-surface · on the nymphunder the surface

Hatch predictions

Top nymph shown — see all 2 guilds with Pro.

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Beyond the hatch · worth watchingambient prey

Hatch predictions

Top prey shown — see all 4 with Pro.

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Evidence
ModelledModerate confidence

Modelled from regional ecology — no survey or occurrence data for this water yet.

Through the year
0–3 scale · July highlighted
J
F
M
A
M
J
J
A
S
O
N
D
Trout seasonSeason
1
2
2
2
2
2
2
2
2
1
SulphurHatch
2
3
2
Trico (Eastern)Hatch
2
3
3
2
Eastern Blue-Winged OliveHatch
2
3
3
3
3
3
3
3
2
Eastern Summer BWO (Drunella)Hatch
2
3
3
2

Numbers are intensity 0 (none) to 3 (peak) — a guide, not a guarantee.

Ranked for today
Rainbow Trout fly box
Permits & access
Permit required — see local rules.
  • A daily trout tag is required inside Roaring River State Park; a Missouri Trout Permit is required to possess trout
  • The fly-fishing-only zone and the winter C&R season have specific rules — verify exact park dates, zones and tag/permit rules against current MDC rules.
What's coming
Plan ahead
5-day outlook
Water here around 19°C. Nothing cooler within range — carry a thermometer.
About this water

Roaring River is one of Missouri's classic trout parks — a small spring-fed stream bursting out of the Ozark hillside in Roaring River State Park near Cassville, stocked daily with rainbows and run on the state's tag-and-whistle park system that draws crowds the moment the season opens. Most of it is put-and-take park water fished shoulder to shoulder on opening day, but there's a catch-and-release fly zone and a winter catch-and-release season that give the fly fisher quieter, more rewarding water, and the spring keeps it cold and constant year-round. It's not wilderness and doesn't pretend to be — it's a friendly, accessible, intensely managed spring stream. Fish the fly zone with scuds, midges and soft hackles, lean into the winter C&R season for solitude, and take the park rules and daily tags as the framework they are.

  • Limestone
Water quality · US Clean Water Act
  • Aquatic lifeSupporting
What this classification means

EPA ATTAINS assessment unit 'Roaring R.' (MO_2416.00), 2022 Integrated Report. Aquatic Life use: Fully Supporting. This is a Clean Water Act assessment-unit classification (the US analogue of WFD), not a live reading.

Status is for the Clean Water Act assessment unit covering this reach.

EPA ATTAINS (Clean Water Act) · MO_2416.00

The full read · show the working · for Rainbow Trout · confidence 80%
How the 36 is built — score × weight = contribution
Temperature81 × 28%22.7
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time45 × 13%5.9
Pressure75 × 7%5.3
Insect activity65 × 12%7.8
Conditions total= 75
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowon-river gaugeobserved
Prey activitymodelled from regional profilemodelled
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
  • Trout1 March31 December
Related guides
Booking & contacts