Old Croton Aqueduct Trail: Scarborough to Sleepy Hollow Professional Guide
Detailed Trail Description from our Guidebook
"Follow the course of New York City’s original water source on a shady trail through lush woodland with occasional dashes of history. Construction of the aqueduct began in 1837, and it began transporting water on June 22, 1842, through its underground corridor of stone, brick, and hydraulic cement.
Shaped like a horseshoe, the conduit transported about 72 million gallons of water into the city daily, following the route workers had created by cutting through hills, filling in valleys, and keeping the entire aqueduct on a trajectory that dropped by just 13.25 inches per mile."