New York metropolitan area New York City Water Tunnel No. 3, an integral part of the New York City water supply system, is the largest capital construction project in the city's history, with segments serving Manhattan and The Bronx completed, and with segments serving Brooklyn and Queens planned for construction in 2020. Much of the fresh water for northern and central New Jersey is provided by reservoirs, but numerous municipal water wells exist which accomplish the same purpose. The New York metropolitan area is home to many prestigious institutions of higher education. Three Ivy League universities: Columbia University in Manhattan, New York City; Princeton
Manhattan of Greater New York", Manhattan and the Bronx, though still one county, were established as two separate boroughs. On January 1, 1914, the New York State Legislature created Bronx County, and New York County was reduced to its present boundaries. The construction of the New York City Subway, which opened in 1904, helped bind the new city together, as did additional bridges to Brooklyn. In the 1920s Manhattan experienced large arrivals of African-Americans as part of the Great Migration from the southern United States, and the Harlem Renaissance, part of a larger boom time in the Prohibition era that included