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Hydrologic Data/Reports: Monthly Summary Archives
Delaware River Basin: Select Flow and Storage Data Archives


The following table includes links to archived monthly flow and storage summaries for select locations in the Delaware River Basin (all PDFs).

Monthly Flow and Storage Summaries - 2026
January March May July September November
February April June August October December
 
Monthly Flow and Storage Summaries - 2025
January March May July September November
February April June August October December
 
Monthly Flow and Storage Summaries - 2024
January March May July September November
February April June August October December
 
Monthly Flow and Storage Summaries - 2023
January March May July September November
February April June August October December
 
Monthly Flow and Storage Summaries - 2022
January March May July September November
February April June August October December
 
Monthly Flow and Storage Summaries - 2021
January March May July September November
February April June August October December
 
Monthly Flow and Storage Summaries - 2020
January March May July September November
February April June August October December
 
Monthly Flow and Storage Summaries - 2019
January March May July September November
February April June August October December
 
Monthly Flow and Storage Summaries - 2018
January March May July September November
February April June August October December
 
Monthly Flow and Storage Summaries - 2017
January March May July September November
February April June August October December
 
Monthly Flow and Storage Summaries - 2016
January March May July September November
February April June August October December
 
Monthly Flow and Storage Summaries - 2015
January March May July September November
February April June August October December
 
Monthly Flow and Storage Summaries - 2014
January March May July September November
February April June August October December
 
Monthly Flow and Storage Summaries - 2013
January March May July September November
February April June August October December
 
Monthly Flow and Storage Summaries - 2012
January March May July September November
February April June August October December
 
Monthly Flow and Storage Summaries - 2011
January March May July September November
February April June August October December
 
Monthly Flow and Storage Summaries - 2010
January March May July September November
February April June August October December
 
Monthly Flow and Storage Summaries - 2009
 
Monthly Flow and Storage Summaries - 2008
January March May July September November
February April June August October December
 
Monthly Flow and Storage Summaries - 2007
January March May July September November
February April June August October December
 
Monthly Flow and Storage Summaries - 2006
January March May July September November
February April June August October December
 
Monthly Flow and Storage Summaries - 2005
January March May July September November
February April June August October December
 
Monthly Flow and Storage Summaries - 2004
January March May July September November
February April June August October December
 
Monthly Flow and Storage Summaries - 2003
January March May July

September

 November
February April June August October December
 
Monthly Flow and Storage Summaries - 2002
January March May July September November
February April June August October December
 
Monthly Flow and Storage Summaries - 2001
January March May July September November
February April June August October December
 
Monthly Flow and Storage Summaries - 2000
January March May July September November
February April June August October December
 
Monthly Flow and Storage Summaries - 1999
May July September November
June August October December