NYC may expand key reservoir after devastating drought

The aqueduct that carries water from the reservoir to New York City has been leaking 35 million gallons of water per day since the 1990s.

1 minute read

October 12, 2026, 5:00 AM PDT

By Zachary Whalen


An aerial view of the Cannonsville Reservoir. A road splits in in two, and there are green mountains to the left, and in the background.

The Cannonsville Reservoir also serves New Jersey, Delaware, New York state and Pennsylvania. | Adam Borowski

New York City is considering expanding the Cannonsville Reservoir, the source of about half the city’s drinking water, after the reservoir has been unable to bounce back from a 2024 drought that reduced its water levels to 60%. Over two decades earlier, water levels hit 3.4%, Rosemary Misdary writes for Gothamist. 

Gothamist reports:

”Dry conditions in this basin can happen quickly, and conditions can change quickly,” said Kristen Bowman Kavanagh, executive director of the Delaware River Basin Commission. “Our responsibility is to make sure that we are understanding any potential changes that are happening in the basin with respect to climate change and sea level rise.”

The basin also serves New Jersey, Delaware, New York state and Pennsylvania. NYC may not even need drought conditions for the reservoir to become unreliable: The Delaware Aqueduct, which brings water from the reservoir to NYC, has been leaking up to 35 million gallons a day since the 1990s.

Tuesday, October 6, 2026 in Gothamist

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