HONOLULU -- The rains that flooded parts of Oahu triggered sewage spills at least at three Windward Oahu treatment plants. That has prompted officials to post warnings for beachgoers.

Brown water appeared along shore where it is usually blue. However, it didn't keep a group of body boarders out of the waves.

The city posted warning signs in areas where sewages spilled into waterways.

Raw sewage from the Kaneohe plant began overflowing at 3 a.m. Friday. The computer systems flashed of dangerously high levels of wastewater.

"It has inundated our system. The excess water that has gotten into our system is more than we can handle," Windward Wastewater Superintendent Kevin Nakamura said.

City crews initially feared a spill of more than 500,000 gallons of raw sewage. However, it appears that a little more than 100,000 gallons spilled.

Crews were finally able to get the water down to manageable levels about nine hours later.

Health officials are advising the public to stay out of the water at Waimanalo and Bellows beaches as well as Enchanted Lake, Kailua Beach and Kaneohe Bay.

Raw sewage has also been overflowing from manholes in about a half a dozen neighborhoods. City crews were pumping where they could.