South
Spring River
Live Conditions
Spring River — Mammoth Spring at Mammoth Spring
7-Day Flow
→ Stable
24-Hr Pressure
29.51 inHg · → High/stable
Local Weather
Tough conditions — fish deep
Today
☁️Overcast
93° / 73°
Tomorrow
☁️Overcast
98° / 74°
Sun
🌧️Rain
96° / 77°
0.06"
Mon
🌦️Drizzle
99° / 73°
0.07"
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?
⚡ AIAI-powered recommendation using today's live flow, temperature, and hatch data.
9
Time of Day
Using: 287 CFS · Sulphurs continuing evenings. Caddis
What should I pack?
Rod, flies, tippet, and safety gear specific to today's Spring River conditions.
🪰 Hatch Calendar
Spring River · July · Summer
Showing typical dates — water temperature data unavailable for live hatch predictions.
Select month
Sulphurs continuing evenings. Caddis (size 14-16). Midges. Scuds. Cold spring water at 58°F when surface waters across the South are too warm to fish.
River Map
About Spring River
The Spring River begins at Mammoth Spring — one of the largest springs in the world, discharging a rock-steady ~270 CFS year-round at a constant 58°F. Stocked rainbow trout (and some brown trout) thrive in the cold spring-fed water for the first miles below the spring, before the river warms and transitions to smallmouth water further south. The Mammoth Spring gauge is among the most stable in the country — flows barely fluctuate season to season. A great year-round, beginner-friendly Ozark trout option.
Regulations
Arkansas fishing license + trout permit required (resident ~$10.50 + ~$10.00 trout permit = ~$20.50/year). Year-round season; standard trout regulations on the stocked rainbow section below Mammoth Spring. No special emergency regulations on the Spring River as of Feb 2026. Verify current rules at agfc.com before fishing.
Learn More
Guides to help you fish Spring River with more confidence.
Arkansas Trout Fishing Regulations Guide
Arkansas fishing license + the separate Trout Permit (~$10.50 + ~$10.00 = ~$20.50 resident), the year-round trout season on every Arkansas trout…
Trout Species of Arkansas
Arkansas's two-species tailwater trout fishery — introduced Brown Trout (the trophy fish, including the all-tackle world record 40 lb 4 oz caught on…
How Barometric Pressure Affects Fishing (And How to Use It)
That gorgeous bluebird day after a cold front? Worst fishing of the year. Here's the data behind why pressure changes matter more than the weather…