Speakers & Tours
Waiheʻe Tunnel
This site is closed for infrastructure improvements throughout Waiheʻe Valley through about mid-2026. Please revisit this page for updates. When tours are available, visitors have the opportunity for a unique educational experience.
"I would recommend this field trip to everyone. I really enjoyed my time... I will never forget!"
Awaken your senses with a walk inside the 1,500-foot dike tunnel that provides water to Windward Oʻahu, from Kahaluu to Kailua. Tour includes introduction of Oʻahu's water cycle, discussion on watershed areas and facility history. Free 2-hour group tour is available by appointment only. Grade 7 and older.
"I appreciate the opportunity provided to me, my students, and their parents to visit and take a tour of Waiheʻe Tunnel and Watershed. It's an invaluable experience for all and I'm sure the memory of this experience will last a lifetime. Mahalo nui loa."
For More Information
Please review the additional tour information before submitting a request.
Updated: 04/23/2025