Rosendal said National Weather Service employees — who have offices at the University of Hawai'i — moved their cars as Manoa Stream rose yesterday. But the stream, which had caused extensive damage to the Manoa campus during rain last year, stayed within its banks.

Although no serious injuries or bad traffic accidents were reported during the heavy rain that fell through early evening, police and other emergency crews were kept hopping.

"About the only part of O'ahu that isn't getting anything is the North Shore," a police dispatch supervisor reported yesterday afternoon. "Almost everywhere else we've got something — from puddles to mudslides to manhole covers blowing off."

Sally and Perry Sorenson walked through knee-deep floodwaters covering Wailupe Place, a small road off Kalaniana'ole Highway. Heavy rain may have backed up drainage systems in the area, as anywhere from 2 to 6 inches of rain fell across southern O'ahu. Bruce Asato • The Honolulu Advertiser

State transportation spokesman Scott Ishikawa said the ramp was reopened shortly after 5 p.m.

Farther west, near Pearl City, flooding swamped the two far right lanes of westbound H-1, police said. Mud near Kunia and Makakilo covered a westbound lane.

Floodwaters swamped sections of East Honolulu, and heavy rain contributed to five sewage spills, according to Honolulu's Environmental Services Department.

Police officers and firefighters from Station 6 in Kalihi cleared debris yesterday from the Middle Street exit of the H-1 freeway. Rain washed mud and rocks onto the ramp, closing it until the cleanup was finished. Eugene Tanner • The Honolulu Advertiser

Runoff contributed to a 700-gallon sewage spill at 41-1060 Kalaniana'ole Highway and a 5,000-7,000-gallon spill at the Navy Marine Golf Course in Aliamanu.

Sewage poured from a manhole on Kalaniana'ole Highway near Pu'u Ikena Drive from 11:45 a.m. until it was brought under control at about 6:30 p.m., Baginski said. Repair crews there found lumber, plastic bags and grease in the sewer main. About 10,000 gallons of sewage overflowed from a manhole at 5703-L Kalaniana'ole Highway.

Rainwater swamped the city sewage system and made sewage flow from a manhole at Kawaihae Street and May Way in Hawai'i Kai, Baginski said.

Eva Rodriguez, a security guard at the Hawai'i Kai Retirement Center, uphill on Kawaihae Street from the sewage spill, said rocks clogging a drainage ditch dammed floodwater from the mountains. "A lot of people's lanais flooded," Rodriguez said.