USGS Water Data for the Nation
USGS has over 13,500 real-time stream, lake, reservoir, precipitation, water quality, and groundwater monitoring locations. View the latest continuous data in your area together with weather-related data
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Read more +NYC''s Reservoir System
The water flows to New York City through aqueducts, and 97 percent reaches homes and businesses through gravity alone; only 3 percent must be pumped to its final destination.
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Read more +Reservoir Levels
View Current Releases. For additional near real-time information on surface water conditions in the New York City Watersheds, go to the USGS for New York State.
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Read more +Reservoir
Central Park is New York City''s backyard—and it needs all who visit to get involved in its care. Find out how you can help keep it a vital public treasure and thriving habitat.
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Read more +New-York Reservoirs & Dams | Water Storage Levels
Compare reservoir levels for the state of New-York, with water storage capacities and seasonal data.
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Read more +Map of New York City''s Water Supply System
Map of New York City''s Water Supply System.
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Read more +UST Finder | US EPA
UST Finder 2.0 – Coming Soon! EPA is working to update UST Finder to version 2.0, a new and improved version of the national mapping application of UST facilities and release sites. We
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Read more +UST Finder | US EPA
Map of New York City''s Water Supply System.
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Read more +National Water Information System: Mapper
Data refreshed October 27, 2025.
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Read more +Reservoir Releases
Reservoirs are structures used to help "conserve and develop" water resources. In a reservoir, water from a stream or river is stored behind a dam for various beneficial uses, like drinking water supply,
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Read more +New York City water supply system
Three separate sub-systems, each consisting of aqueducts and reservoirs, bring water from Upstate New York to New York City: The New Croton Aqueduct, completed in 1890, brings water from the
View/Download How to find a reservoir [PDF]
PDF version includes complete article with source references. Suitable for printing and offline reading.