Water Year Precipitation Maps

2021 Hydro Year Precip RankingThe Water Year is defined as the period between October 1st of one year and September 30th of the next. This interval is often used by hydrologists because hydrological systems are typically at their lowest levels near October 1.

Year Total Precipitation Departure from Normal Historical Ranking
2023 map map map
2022 map map map
2021 map map map
2020 map map map
2019 map map map
2018 map map map
2017 map map map
2016 map map map
2015 map map map
2014 map map map
2013 map map map
2012 map map map
2011 map map map
2010 map map map
2009 map map map
2008 map map map
2007 map map map
2006 map map map
2005 map map map
2004 map map map
2003 map map not available
2002 map map not available
2001 map map not available
2000 map map not available
1999 map map not available
1998 map map not available
1997 map map not available
1996 map map not available
1995 map map not available
1994 map not available not available

 

GIS coverages available upon request. Contact climate.dnr.state.mn.us

  • Total Precipitation maps depict the Water Year precipitation totals in inches.
  • Departure from Normal maps depict the difference between the Water Year precipitation totals and the "normal", a 30 year average. The units are in inches.
  • Historical ranking maps depict Water Year precipitation totals as they rank when compared to Water Year totals over the modern record. The values presented are percentiles. A ranking near zero indicates the year was drier than any found during the period of record. A ranking near 100 designates that the year was wetter than any found on record. A ranking of 50 is equivalent to the "median", a measure of central tendency.

 

For more information contact: climate.dnr.state.mn.us

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