Calendar

Croton Reservoir & Dam Hike

Van Cortlandt Park to High Bridge Walk

To Quench The Thirst of New Yorkers

Yonkers Pop-Up Cleanup

Old Croton Bike Tour - NYC H20

Tibbetts Brook Exploration - NYC H20

Old NYC Water Supply Walk - NYC H20

Distributing Reservoir Stones at New York Public Library

Van Cortlandt Park Loop – Old Croton Aqueduct & Putnam Rail Trails

Liquid Geographies @ The New School

175th Anniversary Celebration!

Ossining Annual 5K Run, 2 Mile Walk

Retracing the Capture of Revolutionary War British Spy Major Andre

Ramble along the Riverwalk and Aqueduct Trails past the Estates of Gilded Age Millionaires

“Woman on a Wheel” - centennial of Women’s Suffrage in New York State

Weekday Weir Tour

High Bridge Walking Tour

175th Anniversary Reception, Hilltop Hanover

175th Anniversary Presentation - Hilltop Hanover

"The Art of the Aqueduct" @ Hilltop Hanover

175th Anniversary Presentation - Hilltop Hanover

175th Anniversary presentation - Hilltop Hanover

Cornelia Cotton lecture on OCA prints

Weir Tour -- A Hudson River Valley Ramble Event

Meandering among the Mansions of the Historic Millionaires. A Hudson River Valley Ramble Event.

Croton Reservoir & Dam Hike

Hastings Rowley’s Bridge Trail — Aqueduct Trail Walk

Croton Reservoir & Dam Hike

Croton Reservoir & Dam Hike

High Bridge Tour

Invasive Plant Strike Force Volunteer Day

Old NYC Water Supply Walk

Old Croton Aqueduct Keepers House & Quarry Walk

Designers for the Millionaires of the Gilded Age

Designers for the Millionaires of the Gilded Age

Old Croton Aqueduct Keepers House – PATH THROUGH HISTORY

Weir Tours (continuous) as part of the Ossining Village Fair

Croton Reservoir & Dam Hike

High Bridge Tour

Weir Tour (weekday)

Meandering among the Historic Millionaires’ Mansions Walk

Croton Reservoir & Dam Hike

Keeper's House Drop-In Hours

Keeper's House Drop-In Hours

Keeper's House Drop-In Hours

Keeper's House Drop-In Hours

Keeper's House Drop-In Hours

Keeper's House Drop-In Hours

Keeper's House Drop-In Hours

Keeper's House Drop-In Hours

Keeper's House Drop-In Hours

Keeper's House Drop-In Hours

Keeper's House Drop-In Hours

Keeper's House Drop-In Hours

Keeper's House Drop-In Hours

Keeper's House Drop-In Hours

Keeper's House Drop-In Hours

Keeper's House Drop-In Hours

Keeper's House Drop-in Hours

Keeper's House Drop-In Hours

Untermyer Park -- Joint walk with WTA

Old Croton Aqueduct at Ossining -- Weir Tour

Croton Reservoir and Dam Hike

History of the High Bridge and the Croton Waterworks

Sixth Annual I Love My Parks Day

Old Croton Aqueduct Distributing Reservoir Stones at New York Public Library Tour

Annual Yonkers Trail Cleanup 2017

Old Croton Aqueduct at Ossining - Weir Tour

Annual Meeting: "Turning Water Into Money: Aaron Burr's Manhattan Company"

A Historical Perspective on Water in NYC, with special focus on Jamaica Bay - lecture by Eric Sanderson

Sing Sing Kill Greenway and the Old Croton Aqueduct at Ossining

Croton Reservoir & Dam Hike

Old Croton Aqueduct at Ossining - Weir Tour

Walk Around Jerome Park Reservoir

Walk Around Jerome Park Reservoir

Croton Reservoir and Dam Hike

Old Croton Aqueduct at Ossining – Weir Tour

The Irvington Historical Society Fall Benefit Event

High Bridge Tour

Old Croton Aqueduct and Dam Ramble

Retracing the Capture of Revolutionary War Spy Major Andre

Meandering among the Historic Millionaires’ Mansions Walk

Old Croton Aqueduct at Ossining – Weir Tour

Croton Reservoir and Dam Hike

Walk the High Bridge and Explore Nearby

Old Croton Aqueduct at Ossining – Weir Tour

Old Croton Aqueduct in Yonkers to Untermyer Gardens Walk

Old Croton Aqueduct and Dam Ramble

Old Croton Aqueduct at Ossining – Weir Tour

Walk the High Bridge and Explore Nearby

NYC H2O: Old NYC Water Supply Walk

Open House at the Keeper's House

Keeper's House Drop-in Hours

Keeper's House Drop-in Hours

Keeper's House Drop-in Hours

Keeper's House Drop-in Hours

Keeper's House Drop-in Hours

Keeper's House Drop-in Hours

NYC H20 High Bridge Walking Tour

Riverkeeper talk: Meteorologist Storm Field & Riverkeeper Boat Captain John Lipscomb

NYC H20 event: Ridgewood Reservoir Community Tour

OCA/Putnam Saleté Printemps Randonnée

Invasive Strike Force Volunteer Day

Lower Hudson Watershed Collaboration and Partnership Event

Volunteer Docent Meeting

Lecture: Preserving New York with Anthony C Wood

Volunteer Docent Meeting

Ossining Water Treatment Plant Tour

Meandering among the Historic Millionaires’ Mansions Walk

Designers for the Millionaires of the Gilded Age

Mercy College to Aqueduct Keepers House and Mead House

Ossining Village Fair - Weir Tours

Walk the High Bridge & Explore Nearby

Croton Reservoir & Dam Hike

Old Croton Aqueduct at Ossining Weir Tour

Old Croton Aqueduct walk, Hastings to Yonkers

FREE Film Screening: "FLOW"

Hudson River Brick Makers

Volunteer Docent Meeting

Old Croton Aqueduct at Ossining Weir Tours

Croton Reservoir & Dam Hike

Old Croton Aqueduct at Ossining -- Weir Tour

Annual Yonkers Trail Clean-up

Save the date: Walk under the Double Arch Bridge

NYC H20 event: Tour of Yonkers Sewage Plant

I Love My Parks Day

FOCA Annual Meeting - Catskill Aqueduct

NYC H2O event: Watershed Relief Map

NYC H2O event: Daylighting Tibbetts Brook

Walking on Water: The Past and Future of the Old Croton Aqueduct