No. 1—Sump at the lowest point on City Hall Loop.
No. 2—Sump at intersection of Elm and White Streets.
No. 3—Sump at 38th Street in the Murray Hill Tunnel.
No. 4—Sump at intersection of 46th Street and Broadway.
No. 5—Sump at intersection of 116th Street and Lenox Avenue.
No. 6—Sump at intersection of 142d Street and Lenox Avenue.
No. 7—Sump at intersection of 147th Street and Lenox Avenue.
No. 8—Sump at about 144th Street in Harlem River approach.
No. 9—Sump at the center of the Harlem River Tunnel.
No. 10—Sump at intersection of Gerard Avenue and 149th Street.