Streamflow—Water Year 2019

Fact Sheet 2020-3057
By: , and 



The maps and graphs in this summary describe national streamflow conditions for water year 2019 (October 1, 2018, to September 30, 2019) in the context of streamflow ranks relative to the 90-year period of water years 1930–2019. Annual runoff in the Nation’s rivers and streams during water year 2019 (13.62 inches) was much higher than the long-term (1930–2019) mean annual runoff of 9.37 inches for the contiguous United States. Nationwide, the 2019 streamflow ranked the highest out of the 90 years.

Suggested Citation

Jian, X., Wolock, D.M., Lins, H.F., and Brady, S.J., 2020, Streamflow—Water year 2019: U.S. Geological Survey Fact Sheet 2020–3057, 6 p.,

ISSN: 2327-6932 (online)

Study Area

Table of Contents

  • Introduction
  • National Overview
  • Regional Patterns
  • Seasonal Characteristics
  • High and Low Flows
  • Additional Information
  • References
Publication type Report
Publication Subtype USGS Numbered Series
Title Streamflow—Water year 2019
Series title Fact Sheet
Series number 2020-3057
DOI 10.3133/fs20203057
Year Published 2020
Language English
Publisher U.S. Geological Survey
Publisher location Reston, VA
Contributing office(s) Kansas Water Science Center, Office of Surface Water
Description 6 p.
Country United States
Online Only (Y/N) Y
Google Analytic Metrics Metrics page
Additional publication details