Spring Fed · Limestone · Missouri, US

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.

Tomorrow · Slow going — pick your moments
Hopper
Forecast · Tomorrow
Slow going — pick your moments
Slow going — pick your moments and do not force it.
80% projected
Today's fly
Hopper
Hopper
Conditions on the water · Tomorrow
Proxy gauge
Level
Steady
Proxy
via North Fork of the White River (upper)
Water temp18.2°C
ClarityClear
Weather29°C
WindN 9 km/h
Pressure1016 hPa
Rain · recent0.0 mm
Rain · ahead0.0 mm

No gauge on this water — conditions are inferred from North Fork of the White River (upper). The trend transfers, the absolute level does not.

Water temperature for Rainbow Trout
Warm — slow
18°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°C — above the brown trout caution line (18°C). Fish dawn or dusk only. Land it fast, wet hands, no air shots.
Likely species
Hatch timeline · tomorrowPeak at 12pm

12pm(now) Grasshopper (Eastern)

Stage: Terrestrials on topApproach: Dry flyActivity: 82%
Also:Reed Smut45%Trico (Eastern)33%
Peak emergence windowWeather boostDegree-days at peak5 food groups active

Peak activity at 12pm — Grasshopper (Eastern) (Grasshopper (Eastern), Peak emergence window)

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(1)

Hatch predictions

Top prey shown — see all 4 with Pro.

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Evidence
Records-basedModerate confidence

Based on species-occurrence records, not local invertebrate surveys.

Through the year
0–3 scale · September 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 18°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 90%
How the 40 is built — score × weight = contribution
Temperature100 × 28%28.0
Flow80 × 22%17.6
Clarity85 × 18%15.3
Feeding Time55 × 13%7.2
Pressure75 × 7%5.3
Insect activity69 × 12%8.3
Conditions total= 82
Can you trust it?
Water temperatureair-to-water estimateestimated
Level / flowproxy via North Fork of the White River (upper)proxy
Prey activitymodelled from regional profilemodelled
What would change the calculation
The dawn and dusk windows score higher than the midday lull.
Directions
Seasons & zones
  • Trout 1 March31 December
Related guides
Booking & contacts