WATERTOWN, N.Y. (AP) _ The National Weather Service has issued flood watches for a large swath of central and northern New York as melting snow pushes some rivers and streams over their banks.

The weather service says the Black River in Watertown in Jefferson County has surpassed its 10-foot flood stage as of Tuesday morning and is expected to rise to just over 11 feet by Wednesday afternoon. Meteorologists say moderate to more extensive flooding could occur if the river reaches 12 feet.

In neighboring St. Lawrence County, flood waters from Black Lake covered some roads and inundated the lawns at some residences and seasonal camps but no evacuations have been reported.

Flood watches have been issued for a region stretching from Oswego County on Lake Ontario's eastern end to the Adirondacks and Lake Champlain's western shore.