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Streamflow—Water year 2021

August 19, 2022

The maps and graphs in this summary describe national streamflow conditions for water year 2021 (a water year is the period from October 1 to September 30 and is designated by the year in which it ends; for example, water year 2021 was from October 1, 2020, to September 30, 2021) in the context of streamflow ranks relative to the 92-year period of water years 1930–2021. Annual runoff in the Nation’s rivers and streams during water year 2021 (9.43 inches) was higher than the long-term (1930–2021) mean annual runoff of 9.42 inches for the contiguous United States. Nationwide, the 2021 streamflow ranked the 46th highest out of the 92 years.

Citation Information

Publication Year 2022
Title Streamflow—Water year 2021
DOI 10.3133/fs20223072
Authors Xiaodong Jian, David M. Wolock, Harry F. Lins, Ronald J. Henderson, Steven J. Brady
Publication Type Report
Publication Subtype USGS Numbered Series
Series Title Fact Sheet
Series Number 2022-3072
Index ID fs20223072
Record Source USGS Publications Warehouse
USGS Organization Kansas Water Science Center