Hydrologic Data/Reports
Annual Hydrologic Conditions Report: 2023
2023 Annual Hydrologic Conditions Report cover.

The 2023 Annual Hydrologic Conditions Report for the Delaware River Basin looks at precipitation, streamflow, storage, groundwater and the salt front location.


View the Report

  • 2023 Annual Hydrologic Conditions Report (pdf)


Key Highlights:

  • Precipitation in 2023 was relatively normal, however dry periods occurred in May, October and November. In June, Pennsylvania counties were placed in drought watch and were removed at different times as conditions improved.

  • The year ended with above normal precipitation in December, resulting in significant flooding in lower basin tributaries.

  • Groundwater levels were below normal for most of the year but improved by December.

  • The salt front was between RM 59 and RM 72 during the year until mid-December, when higher flows moved the salt front below RM 54, below which its location is not calculated. The most upstream location of the salt front was RM 71.8 on November 22.

Annual Hydrologic Conditions Report Archives

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

2000