"Figure 3. Average Date of Peak Snowpack in the Western United States, 1982-2023",
Source: EPA's Climate Change Indicators in the United States: www.epa.gov/climate-indicators,
"Data source: USDA Natural Resources Conservation Service, 2023",
Web update: June 2024,
Units: day of water year,
,
Water year,Peak date 
1982,198.8861538
1983,209.5753846
1984,204.3630769
1985,187.9138462
1986,186.0738462
1987,186.5446154
1988,187.2523077
1989,183.2892308
1990,186
1991,199.6153846
1992,177.0830769
1993,194.2153846
1994,185.9630769
1995,199.9230769
1996,192.8953846
1997,190.0861538
1998,195.1292308
1999,199.5446154
2000,184.0215385
2001,191.0338462
2002,186.0738462
2003,194.2615385
2004,174.7446154
2005,193.7323077
2006,191.8030769
2007,177.6953846
2008,197.5169231
2009,196.5507692
2010,198.9784615
2011,206.6061538
2012,181.6676923
2013,186.6246154
2014,187.6338462
2015,164.2676923
2016,182.2276923
2017,184.0646154
2018,188.4892308
2019,191.6215385
2020,190.3507692
2021,185.6953846
2022,188.0676923
2023,195.7969231