Ossining Earth Day Festival / Sing Sing Kill Walkway / Weir Chamber 4-16-16

"The Ossining Weir Chamber, located on the

Ann Street side of the Double Arch Bridge

promenade, is one of six such structures

located along the Old Croton Aqueduct. The

purpose of the weir chambers was to regulate the

flow of water along the aqueduct tunnel, allowing

water to be emptied into local waterways in the

event of flooding or when needed for maintenance

and repair of the tunnel. The weir chambers also

served as ventilators for the aqueduct system.

Inside the weir chamber is a large iron sluice

gate, the opening of which allowed water to drain

out of the tunnel into the Sing Sing Kill below.

When all of the weir chambers were opened,

the entire aqueduct could be drained in just two

hours. Today, the Ossining Weir Chamber is a

component of the Old Croton Aqueduct State

Historic Park. The organization “Friends of the

Croton Aqueduct” conducts periodic tours of the

Weir Chambers for the public, granting interested

parties access to the inside of the weir chamber

and aqueduct tunnel." (from thevillageofossining.org)

Done