BROOKLYN - There's good news for Gowanus residents who are all too familiar with the area's flooding problems: the city has secured billions of dollars for improvements. The New York City Green Infrastructure Plan is investing $2.4 billion over the next 20 years to divert stormwater runoff before it reaches the city's sewer system. The project will involve using specially designed tree pits to help catch stormwater. Four have already been installed on Dean Street and there are 10 more under construction around Brooklyn. Department of Environmental Protection officials say it?s the first batch of many improvements. City officials say the project will focus on alleviating puddles in problem areas first.