🏊 Natural Swimming
🟢 Easy Free Entry
🌊 About Mammoth Spring State Park
A National Natural Landmark and one of the world's largest springs, releasing ~9.8 million gallons of 58°F water hourly to form a 10-acre lake and the headwaters of the Spring River.
📋 Visit Details
Water Temperature
💧 58°F constant
Water Type
World-class spring forming a 10-acre lake
Managed By
Arkansas State Parks
County
Fulton County, Arkansas
🗺️ Getting There
Address / Access Point:
17 Hwy 63 North, Mammoth Spring, AR 72554
Access Notes:
Easy park access; historic 1886 train depot on site
✅ Before You Go — Checklist
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Check current water conditions — especially after recent rain
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Save GPS coordinates offline before leaving — cell service may be limited
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Pack reef-safe sunscreen, dry bag, water shoes and plenty of drinking water
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Tell someone where you are going before heading to a remote location
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Pack out everything you bring in — leave no trace