Hydrologic Data/Reports
Delaware River Flow and Storage Data Monthly Summaries (all pdfs)


Monthly spreadsheets will typically be posted the first Monday of each month. 

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