Wailua River State Park
Wailua River State Park preserves the valley that was once the spiritual center of Kauai, home to Hawaiian royalty and some of the island’s most sacred heiaus (temples). Today, Hawaii’s only navigable river draws visitors for kayaking adventures to Uluwehi Falls (Secret Falls) and the atmospheric Fern Grotto.
The Wailua River flows 20 miles from Mount Waialeale—one of the wettest places on Earth—creating a lush, tropical paradise dotted with waterfalls, ancient sites, and dense rainforest.
Park Overview
| Wailua River State Park Overview | |
|---|---|
| Location | East Kauai, Wailua |
| River Length | 20 miles |
| Entry Fee | Free (kayak rentals separate) |
| Key Features | Kayaking, Secret Falls, Fern Grotto, heiaus |
| Best For | Kayak adventures, cultural sites |
Things to Do
Kayak to Secret Falls
The most popular activity—paddle up the river for 2 miles, then hike 1 mile through jungle to 100-foot Uluwehi Falls (Secret Falls). Allow 4-5 hours round trip. Kayak rentals available near the marina.
Fern Grotto
A natural amphitheater covered in tropical ferns, accessible by riverboat tours. Once a popular wedding venue; boat tours include Hawaiian music and lei-making demonstrations.
Historic Heiaus
Several sacred sites are accessible near the river, including:
- Holoholoku Heiau – Birthstone heiau where royal children were born
- Poliʻahu Heiau – Temple overlooking the river
- Bellstone – Ancient communication stone
Safety Information
| ⚠️ Safety Notes | |
|---|---|
| Flash Floods | Check conditions—river can rise quickly after rain |
| Leptospirosis | Don’t swim with open wounds; don’t drink river water |
| Trail to Falls | Muddy and slippery; wear water shoes |
Frequently Asked Questions
How long is the kayak trip to Secret Falls?
The complete trip takes 4-5 hours: about 2 hours of kayaking (round trip), 1 hour hiking (round trip), and time to enjoy the waterfall. Kayak rentals typically include this in a half-day reservation.
Can beginners kayak the Wailua River?
Yes! The Wailua River is calm and flat, making it perfect for beginners. Rental companies provide instructions, and the paddle is straightforward with no rapids or ocean currents to worry about.
Paddle Hawaii’s Sacred River
Kayak to waterfalls through Kauai’s royal valley
