This really is a one off attraction - check with your hotel or i-site about the dam opening hours(this summer it was 10am 12 noon 2pm and 4pm). Get there early and walk to one of the signposted viewing areas - not a difficult or long walk just a bit uneven in places. This gives you the chance to look at the rapids before the water flows through the sluice gates and fills up the rapids before your eyes - there is a siren sounded at 10 minutes and 5 minutes before the gates open so you have some warning. When the water starts to flow it takes a little while to fill up the pools before the rocks in the gorge are submerged, you can get some great time lapse photos. If you are unable to walk to the viewing areas you can still watch from the top of the dam. Thoroughly recommend this.
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