WHITE PLAINS, N.Y. (CBSNewYork/AP) – Sandy has proven deadly in both Rockland County and Westchester County.

It was dicey driving through Westchester County Tuesday morning.

WCBS 880’s Sean Adams made his way from Mamaroneck to Rye and on to White Plains.

The Hudson did not just breach its banks in New York City, it also slammed parts of Westchester leaving damage in its wake.

WCBS 880’s Sean Adams reports

“Went over its banks about six feet, fed into the Yonkers Board of Education building, which sustained several million dollars worth of damage,” Yonkers Mayor Mike Spano told Adams.

Elsewhere across Yonkers, damage was widespread.

“Over 200 trees down, many of those trees are coupled with wires,” Spano told Adams.

Adams reported witnessing similar cases in Mamaroneck, Larchmont, Rye, New Rochelle, Port Chester, Harrison, White Plains and Scarsdale. Throughout the county, trees have landed on cars, homes and utility poles, Adams reported.

A tree completely uprooted in Scarsdale destroyed a car, Adams reported.

“Crushing my car that I had parked across the street because I thought that was a safe place for it to be. It is now a complete and total pancake,” Scarsdale resident Thomas Kuperman told Adams.

Police are urging residents to stay at home, warning of dangers from downed wires, flooding, weakened branches that may fall and other hazards from the aftermath of Sandy.

Some streets are absolutely clear and illuminated, while others are dark and blocked by fallen trees and splintered utility poles.

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Two boys were killed by a falling tree in North Salem and a man died when his car hit a downed tree on the Sprain Brook Parkway in Greenburgh.

Among the neighborhoods with power are downtown Mamaroneck and Rye.

“Our damage assessors will get out there as soon as they’re able and start making decisions about which outages can be remedied most quickly,” said Bob McGee of Con Edison about fixing outages in Westchester.

When it comes to Con Edison’s overhead systems, they have to get access to the lines that are down and that includes getting trees and other debris out of the way.

Westchester County health officials say partially treated sewage has been entering the Hudson River from two plants in Yonkers.

The county asked Con Edison to cut power to the Yonkers Wastewater Treatment Plant at 8:45 p.m. Monday.

The decision was made to protect workers and equipment due to flooding. The plant was being pumped out overnight.

Then, at 10:50 p.m., the North Yonkers station became flooded and its pumps went out of service. That allowed the release of screened raw sewage into the Hudson River.

Spokesperson Chris Olert told WCBS 880 that they also have to wait for winds to die down before they can put workers in bucket trucks.

In Rockland County, Orangetown police say that a man was killed Monday night when a tree fell on a house in the Rockland County hamlet of Pearl River.

His name was not immediately available.

Orange & Rockland said that 200,000 lost power. They expect power to be restored within 10 days.

One piece of good news is that the Tappan Zee Bridge has reopened.

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