Flooding is very common in this part of the autonomous Papua New Guinea, with the United Nations saying in December that as many as 7000 residents had to move their homes due to flooding from king tides.
The atolls are among the most threatened parts of the Pacific from climate change and sea level rise.
The head of NGO Tulele Peisa, Ursula Rakova, said these latest tides were worse than normal.
"We have had king tides which have resulted in the salt water going up the gardens and basically you can't see any garden anymore. The Bougainville government has ordered a state of emergency and that they will be supplying some food rations back to the atolls - I don't know when and how soon," she said.