Preliminary measurements of the January storm were almost an inch off, the NOAA announced Thursday.
Nydia Velazquez said Red Hook was promised $200 million but that number has been cut to $100 million.
The project will install new catch basins, more than four miles of sewers and replace water mains.
The snow is expected to mix in with rain Saturday, forecasters said.
The winds will batter the city while the rains pass through the area, forecasters said.
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