It's not a very nice lake; it's a reservoir. Says Michelle
Yep, outdoors entertaining stuff to do are truly plentiful here at Huinawai Reservoir. A magnificent close by hotel is Kauai Beach Inn, Poipu Bed And Breakfast, and why not take a refreshing hike along the Mhihi Waialae Trail. A delightful backpacking trail close at hand, 27 miles in length, with a difference between top and bottom of 1,885 feet is Mhihi Waialae Trail. Mhihi Waialae Trail is
a hard backpacking trail that calls for in the order of three days to backcountry walk. This lake is so wonderful. Huinawai Reservoir is right by the Alakai Swamp Trail, and from Huinawai Reservoir you obtain a great vista of Kahuamoa.