Please note: Storage data are provisional and provided by the New York City Department of Environmental Protection, Bureau of Water Supply. The period of record represented by the long-term median is June 1967 to May 2013. Drought Watch, Drought Warning, and Drought Occuring lines are defined by Figure 1 of Article 2 in the Delaware River Basin Water Code 18 CFR Part 410. As of June 1, 2018, the NYC Delaware Basin Reservoir statistics have been changed to reflect the 2016 USGS bathymetry tables. 

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The next update to this graph will be April 6, 2020.