The 2024 Annual Hydrologic Conditions Report for the Delaware River Basin looks at precipitation, streamflow, storage, groundwater and the salt front location.

View the Report

  • 2024 Annual Hydrologic Conditions Report (pdf)

Key Highlights:

  • The Delaware Basin experienced a mix of wet and dry periods, with significantly drier conditions beginning in the fall. Each of the four states declared either a drought watch or warning in some or all of their counties in the Delaware River Basin by the end of the year. 

  • The year ended with a large precipitation event in December, resulting in flooding in two upper basin tributaries.

  • Groundwater levels were mostly normal in Delaware and New Jersey, while in drought watch in New York and Pennsylvania. Slight improvement was seen in December.

  • The salt front was between RM 58 and RM 68 until mid-September, when low flows allowed the salt front to start to move upstream. It reached RM 90, near the Philadelphia airport, on November 20, its most upstream location for the year. With higher flows resulting from rain in November and December, the salt front ended the year at RM 71.

2023 (pdf 4.5 MB)

2022 (pdf 5.3 MB)

2021 (pdf 11 MB)

2020 (pdf 4.6 MB)

2019 (pdf 1.4 MB)

2018 (pdf 1.7 MB)

2017 (pdf 6.5 MB)

2016 (pdf 5.7 MB)

2015 (pdf 3.1 MB)

2014 (pdf 3.2 MB)

2013 (pdf 2.6 MB)

2012 (pdf 2 MB)

2011 (pdf 133 KB)

2010 (pdf 325 KB)

2009 (pdf 70 KB)

2008 (pdf 83 KB)

2007 (pdf 94 KB)

2006 (pdf 79 KB)

2005 (pdf 1.2 MB)

2004 (pdf 271 KB)

2003 (pdf 148 KB)

2002

2001

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