Calendar
Van Cortlandt Park’s Northeast Kingdom
Walk the High Bridge, Explore the Heights
Manhattan Aqueduct Walking Tour: 135th St. south to Central Park
Lenoir Nature Preserve to Untermyer Gardens.
Croton Reservoir & Dam Hike: Short and Long Walks
Rockwood Hall —Archville Bridge Loop
NEW! Manhattan Aqueduct Walking Tour: 135th St. north to the High Bridge
The Chain that Defined the Aqueduct and Beyond
The Chain that Defined the Aqueduct and Beyond
Weirs to Beers: Ossining & the Aqueduct
Preparing New York’s Water Supply for the 21st Century. Annual Meeting of the Friends of the Old Croton Aqueduct
Tarrytown/Sleepy Hollow Loop
Legendary Ladies along the Aqueduct 2.0
Croton Reservoir & Dam Hike
Walk the High Bridge, Explore the Heights
Tarrytown/Sleepy Hollow Loop
Rivertowns Pollinator Forum
Legendary Ladies along the Aqueduct
Croton Reservoir & Dam Hike
Invasives: Why Should We Care?
Weirs to Beers: Ossining & the Aqueduct
Lenoir Nature Preserve to Untermyer Gardens
Van Cortlandt Park’s Northeast Kingdom, touching upon the Indian Massacre by the British in 1778
Gallery Reception: Fragile Waterways–Protecting What We Love
Gallery Reception: Fragile Waterways–Protecting What We Love
HOW NEW YORK BECAME THE EMPIRE CITY: An Illustrated Talk by Tom Tarnowsky
Lenoir Nature Preserve to Keeper's House Loop
Hastings Way Back When, Then and Now
Croton Reservoir & Dam First Day Hike
Weirs to Beers: Ossining & the Aqueduct
Croton Reservoir & Dam to Ossining Weir tour - POSTPONED
Croton Reservoir & Dam Hike
Rockwood Hall – Archville Bridge – Rockefeller Preserve
Weirs to Beers: Ossining & the Aqueduct
Croton Reservoir & Dam Hike
Meandering among the Mansions of the Historic Millionaires
Croton Reservoir & Dam Hike
A Call to Action: Protecting Nature's Biodiversity
Exhibition: HOW NEW YORK BECAME THE EMPIRE CITY
Walk the High Bridge & Explore Nearby
CANCELLED - Croton Reservoir & Dam Hike
Lenoir Nature Preserve to Untermyer Gardens
Croton Reservoir & Dam Hike
Croton Reservoir & Dam Hike
Invasive Species Volunteer Day
High Bridge & Aqueduct South Walking Tour
Croton Reservoir & Dam Hike
Croton Reservoir & Dam Hike (TIME CORRECTED)
Croton Reservoir & Dam Hike
Croton Reservoir & Dam Hike
Walk the High Bridge and Explore Nearby
Croton Reservoir & Dam Hike
Tibbetts Brook Park Loop (POSTPONED)
Walk the High Bridge & Explore Nearby - (POSTPONED)
Croton Reservoir & Dam Hike
"Making History in Dobbs Ferry: The Aqueduct Inspires a Downtown Historic District"
The Many Lives of John Bloomfield Jervis, an illustrated talk by Bob Boothe, Industrial Heritage Historian
New York City's Water System
Walk on Water: Croton Aqueduct up Amsterdam Avenue to the High Bridge
Walk on Water: Croton Aqueduct up Amsterdam Avenue to the High Bridge
Croton Reservoir & Dam Hike
Bronx Aqueduct Walk's First Group Meeting
Meandering among the Mansions of the Historic Millionaires
Old Croton Aqueduct Keeper’s House Open House & Curator’s Talk
Weirs to Beers: The Aqueduct in Ossining
Lenoir Nature Preserve to Keeper's House Loop
Weir Tours (continuous) as part of the Ossining Village Fair
Croton Reservoir & Dam Hike
Eighth Annual I Love My Park Day
Walk the High Bridge & Explore Nearby
Lenoir Nature Preserve to Untermyer Gardens
Marcia Brewster: Water, Sanitation and Gender: Issues for the 21st Century
Van Cortlandt Park trails, including the Old Croton Aqueduct
Croton Reservoir & Dam Hike
Weirs to Beers: The Aqueduct in Ossining
Croton Reservoir & Dam Hike
CANCELLED - Free-A-Tree Invasive Vine Removal
An Evening with Mary Calvi
Guided House Tour - Armour-Stiner (Octagon) House
CANCELLED - Croton Reservoir & Dam Hike
Weirs to Beers: Ossining & The Aqueduct
Walk the High Bridge & Explore Nearby
Croton Reservoir & Dam Hike
Opening Reception for "The Tunnel: A Passage Through History"
Along the Aqueduct Trail - Meet the new Curator of the Lenoir Nature Preserve, Sara Cavanaugh
CANCELLED - Free-A-Tree Invasive Vine Removal
Free-A-Tree Invasive Vine Removal
Free-A-Tree Invasive Vine Removal
Tours of the Armour-Stiner Octagon House
Tours of the Armour-Stiner Octagon House
Croton Reservoir & Dam First Day Hike
New York City's Water System: A Talk by Adam Bosch
Distributing Reservoir Stones at New York Public Library
Croton Reservoir & Dam Hike
Croton Reservoir & Dam Hike
Brick by Brick: The Erie Canal & the Building Boom
Walk the High Bridge & Explore Nearby
Rockwood Hall – Archville Bridge – Rockefeller Preserve
Unravelling the 5 Corners Knot: Guided Old Croton Aqueduct Trail Walk
Old Croton Aqueduct Keeper’s House - Open House
Meandering among the Mansions of the Historic Millionaires
Croton Reservoir and Dam Hike
Croton Reservoir and Dam Hike (rain or shine)
Walk the High Bridge and Explore Nearby
Walk the High Bridge and Explore Nearby
High Bridge Walking Tour by NYC H20
Invasive Species Workshop
Croton Reservoir & Dam Hike (rain or shine)
Highbridge Trails Stewardship
"The Old Croton Aqueduct" - a talk by Cornelia Cotton
Highbridge Rocks Community Festival
Walking Tour of the High Bridge
Old Croton Aqueduct Keeper’s House Open House & Curator’s Talk
Weir Tours (continuous) as part of the Ossining Village Fair
Croton Reservoir & Dam Hike
Walk the High Bridge & Explore Nearby
Seventh Annual I Love My Park Day - INVASIVES CLEANUP
Croton Reservoir & Dam Hike
Untermyer Park – Joint walk with WTA
Old Croton Aqueduct Volunteer Day – Rid the Trail of Invasive Plants with the Friends of the Old Croton Aqueduct and the NY-NJ Trail Conference
Croton Reservoir & Dam Hike
Walk the High Bridge & Explore Nearby
Riverwalk-Irvington Loop walk. Ramble along the Riverwalk and Aqueduct Trails past the Estates of Gilded Age Millionaires
ANNUAL MEETING: Tales of Croton Point: A Colorful History
FOCA Annual Meeting 2018 - "Operating and Maintaining the Greatest Waterworks in America"
Trivia Contest at the Watershed Relief Map
Croton Reservoir & Dam Hike
KEEPER'S HOUSE EXHIBITION: The Tunnel: A Passage Through History
Van Cortlandt Park to High Bridge Walk
To Quench The Thirst of New Yorkers
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
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
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
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
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
Lecture: Preserving New York with Anthony C Wood
Ossining Water Treatment Plant Tour
Meandering among the Historic Millionaires’ Mansions Walk
Designers for the Millionaires of the Gilded Age
Mercy College to Aqueduct Keeper's 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
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
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
