A release of water near Massena from upstream along the St. Lawrence River could cause unsafe water and ice conditions near Long Sault Dam. The gates at Long Sault Dam may need to be opened as early as today to spill excess water from the St. Lawrence River, according to the New York Power Authority. NYPA warns that a spill through the dam will result in rapidly changing river flows and potentially unsafe ice conditions along the South Channel of the river, downstream of the dam. Members of the public should be alert to rapidly changing ice conditions and should stay off the ice. Temporary signs such as this are posted along spots near the South Channel to inform the public that water may be released from the Long Sault Dam.