A continuous 12-month period for which hydrological records are compiled and summarized. In California , a water year begins October 1 and ends September 30 of the following year. Thus, the 1991 water year began October 1, 1990 , and ended September 30, 1991 .
The water year begins on October 1 and ends on September 30 of the following year. For example water year 1994 began October 1, 1993 and ended September 30, 1994.
The period between October 1 of one calendar to September 30 of the following calendar year.
The period between July 1 of one calendar year to June 30 of the following calendar year.
In Geological Survey reports dealing with surface-water supply, the 12-month period, October 1 through September 30. The water year is designated by the calendar year in which it ends and which includes 9 of the 12 months. Thus, the year ended September 30, 1959, is called the "1959 water year."
Time convention used by the USGS for compiling and reporting their streamflow data. The water year for Oregon (and United States) is from October 1st to September 30th. For example water year 2000 is from October 1, 1999 to September 30, 2000. For Oregon and Western U.S., the water year splits data during a relatively dry period during which streamflow does not change significantly from day to day (end of summer, early autumn), rather than in the midst of the wet season during which flows can change rapidly from day to day.
A year begins October 1 and ends September 30. For example, water year 2967 begins October 1, 1966, and ends September 30, 1967.
A continuous 12-month period for which hydrologic records are compiled and summarized. In California. the water year be~ins October 1.
A 12-month period from October 1 to September 30 used by the USGS to report water surface data.
Any twelve-month period, usually selected to begin and end during a relative dry season. Used a basis for processing streamflow and other hydrologic data. The period from October 1 to September 30 is widely used in the U.S.
A division of the earth year based on the general pattern of annual wet and dry periods rather than by calendar months. The U.S. Geological Survey uses the water year of October 1 through September 30 for data analysis.
The 12-month period October 1st through September 30th, generally correlating with the snowpack and subsequent growing season. The water year is designated by the calendar year in which it ends and which includes 9 of the 12 months. Thus, the year ending September 30, 1959, is the 1959 water year.
Measured water flow during a 12-month period starting October 1st and continuing to September 30th of the following year.
