An environmental group reported muddy water flowing into the canal from Lightstone's construction site.
Almost 30 teams are signed up to participate in a boat race on the heavily polluted Gowanus Canal.
Urban Greenwalk will create a weeklong open-air museum in the West Village in April.
A new law would require disclosure to the public within four hours of sewage entering waterways.
The plan will increase the city's green and gray infrastructure.
The Department of Environmental Protection released a report that showed a loose nut on a fuel line may have led to the massive fire.
Proposed law calls for real-time water quality updates to be available to the public in the wake of the North River sewage plant fire in July.
DEP says it will begin issuing more public warnings about water quality and post test results more frequently.
The North River Wastewater Treatment Plant pumped an estimated 800 million gallons of untreated sewage into the Hudson last year, even before a fire forced the plant to close down last week.
City officials say the stream of at least 200 million gallons of raw sewage pumped into the Hudson River stopped at 9:30 p.m. Friday.
The water's off limits at South Beach, Midland Beach and Cedar Grove Beach on Staten Island and Brooklyn's Sea Gate Beach following ongoing sewage dumping, and more beaches could be added to the list.
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