HONOLULU ? With more heavy rain on the way, Hawaiian officials carefully monitored high-risk reservoirs for another possible break after a dam burst last week, killing up to seven people.

A flash flood warning was in effect and state officials said they were sending further support to Kauai, where the Kaloko Reservoir dam broke Tuesday and sent a flood of surging water that swept away houses. The bodies of three victims have been found; four remain missing.

Forecasters predict the rains will continue to fall through at least Wednesday. Four high-risk reservoirs will be watched by radio-controlled water level monitoring devices capable of beaming information to a satellite, said Peter Young, who heads the state’s Department of Land and Natural Resources. An additional system will use a laser light to monitor any movement at the dams.