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Opaekaa Falls, Kauai
(3.7/5 based on 280+ reviews on the web)
Ōpaekaa Falls is a waterfall located on the ʻŌpaekaʻa Stream in Wailua River State Park on the eastern side of the Hawaiian island of Kauai. It is a 151–foot waterfall that flows over basalt from volcanic eruptions millions of years ago. Below the ridge down into the ravine through which the water falls can be seen the vertical dikes of basalt that cut through the horizontal Koloa lava flows. The name "Ōpaekaa" means rolling shrimp, "opae" being Hawaiian for "shrimp," and "kaa" for "rolling". The name dates back to days when the native freshwater shrimp Atyoida bisulcata were plentiful in the stream and were seen rolling and tumbling down the falls and into the churning waters at the fall's base.Visually, this is a spectacular waterfall and is one of the island's few waterfalls that can be seen from the road. It flows year round and therefore is not seasonal. Most of the time it falls in a double cascade but the two sides may become one after a heavy rain. There is a highway overlook which provides a panoramic view of the 40ft wide falls and the valley below. The best time of day to see the falls is in full sunlight when the water sparkles the most. If the day is cloudy the view is less spectacular.
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Reviews
TripAdvisor
  • lots of parking here and a nice but far away view of falls. a very pretty setting with nice greenery 
  • This is an easy waterfall to go and see. There is plenty of parking in the parking lot. It is a very short walk from the parking lot to where one can see the waterfall. And it is easy to get some grea...  more »
  • Beautiful falls. We were on a daylong Kauai shore excursion and this was one of the stops. Nothing to do here but see the falls, but they are worth a 5 minute stop. 
Google
  • This is a beautiful 300 foot waterfall ( vegetation hides the bottom) that is viewed from above. There is a large parking area. The best photos are from along the walkway to the overlook across the street which features Kamokila village. (another review..good spot). This is best after a lot of rain!
  • Beautiful waterfalls just minutes from Kapa'a. It's probably the most easily accessed on the island, with a viewpoint on Highway 580, also known as Kuamo'o Road. Opaeka'a means "rolling shrimp," which were once abundant here. The 151-foot falls flow year-round.
  • Must Stop. Great roadside overlook. There is also a viewing area of the valley and ocean across the street. Easy access and ample parking.
  • This is a very pretty waterfall, but the view is pretty far away.
  • Not worth the stop unless you need to use the restroom. The waterfall is not close. Use a zoome lens if you want a quality shot unless you want a landscape photo. Overgrowth makes it more difficult to see except from near the end of the bridge. Another viewpoint across the road for the old movie village below. Again, overgrowth in the way.