Streamflow of 2012--Water Year Summary

Fact Sheet 2013-3026
By: , and 



The maps and graphs in this summary describe streamflow conditions for water year 2012 (October 1, 2011, to September 30, 2012) in the context of the 83-year period from 1930 through 2012, unless otherwise noted. The illustrations are based on observed data from the U.S. Geological Survey’s (USGS) National Streamflow Information Program ( The period 1930–2012 was used because, prior to 1930, the number of streamgages was too small to provide representative data for computing statistics for most regions of the country. In the summary, reference is made to the term “runoff,” which is the depth to which a river basin, State, or other geographic area would be covered with water if all the streamflow within the area during a specified time period was uniformly distributed upon it. Runoff quantifies the magnitude of water flowing through the Nation’s rivers and streams in measurement units that can be compared from one area to another.

Study Area

Publication type Report
Publication Subtype USGS Numbered Series
Title Streamflow of 2012--Water Year Summary
Series title Fact Sheet
Series number 2013-3026
DOI 10.3133/fs20133026
Year Published 2013
Language English
Publisher U.S Geological Survey
Publisher location Reston, VA
Contributing office(s) National Center
Description 8 p.
Time Range Start 2011-10-01
Time Range End 2012-09-30
Country United States
Online Only (Y/N) Y
Additional Online Files (Y/N) N
Google Analytic Metrics Metrics page
Additional publication details