Many parts of Blenheim lie on the banks of the Schoharie Creek.  A New York City reservoir and The New York Power Authority operate facilities above the town.
• These two entities have large reservoirs controlled by dams.
In the event of a failure or breech of these dams, there is a series of sirens that will sound.
• A test of The Dam Siren goes off on the 2nd Wednesday of every month at noon. This is only a test.

• If you hear the siren going off at any other time there has been a dam failure.  You should leave your home immediately and drive up-hill.  Evacuation signs will direct you to higher terrain.