The Waikamoi Falls Trail in Maui County, Hawaii is an easy 0.1 mile out-and-back hike out to Lower Waikamoi Falls, which is a 20 foot tall waterfall that cascades down into a swimming pool below.
This trail can either be packed or empty - it all depends on the traffic, time of day, and weather. Beware of flash flooding during heavy rains - do not attempt to swim or hike upstream during heavy rains for this reason.
If you continue following the trail upstream, you'll reach Upper Waikamoi Falls, which is not much further; however, the hike can be dangerous if the water level is high, hence the short distance tracked here.
Parking: Parking can be found to either side of the stream, but a larger turnout can be found on the west side of the stream/bridge.