The Maharness, rising in North Castle, and Stamford Mill River, rising in Poundridge, flow into Connecticut and thence to the Sound.

The southern or Sound shore of the county is indented with bays and estuaries, of which Westchester or Pelham Bay and Mamaroneck Harbor are the largest. Peninsulas stretch out into the Sound, of which Throgg's Neck, Pelham's Neck, Davenport's Neck and DeLancey's Neck are the most important. Islands are ntimerous along the shore of the Sound. The largest are City, Hunter's, David's, Huckleberry and Manaessing Islands.

The railroads that traverse the county are : The New York Central and Hudson River Railroad,which extends along the eastern bank of the Hudson River through the whole length of the county, entering it at Spuyten Duyvil, and leaving it at Anthony's Nose, at the corner of Putnam. At Spuyten Duyvil

Creek the main line connects along the north bank to Harlem River Bridge, with the Grand Central Depot, at Forty-second Street. Riverdale Station, the first station in the present Westchester County, presents a beautiful prospect of Yonkers on the north, the Palisades across the river, with the Ramapo range of hills in the distance. Yonkers, Hastings-on-the- Hudson, Dobbs Ferry, Abbotsford, Irvington, Tarrytown, Sing Sing, Croton, Crugers, Verplanck and Peekskill, are the principal stations along the line of this road.

The New York and Harlem River Railroad extends through the central portion of the county, through Morrisania, West Farms, Eastchester, Scarsdale, White Plains, Mount Pleasant, New Castle, Bedford, Lewisboro and North Salem. Mount Vernon, White Plains, Pleasantville, Mt. Kisco, Katonah, and Croton Falls, are the principal villages along its line. At William's Bridge, the New York and New Haven Railroad branches and runs through Eastchester, Pelham, New Rochelle, Mamaroneck, Harrison and Rye.