Upper Colorado snowpack › San Juan › Vallecito
Vallecito snowpack
NRCS SNOTEL station 843 at 10,740 ft in La Plata County, Colorado, in the San Juan basin, with daily records since Aug 25, 1986. Latest reading Oct 29, 2026.
Snow water equivalent
—
of the 1991–2020 median for this date · 200% of average
SWE today
1 in
median 0 in · average 0.5 in
Water-year precipitation
352%
of average since Oct 1 · 8.8 in vs. 2.5 in
Toward the normal peak
6%
of the average peak, 16 in around Apr 2
This water year against the normals
Water year 2027Water year 20261991–2020 median1991–2020 average
Water-year precipitation
Water year 2027Water year 20261991–2020 average
Peak snowpack by water year
Since 1987 this station's snowpack has peaked as high as 34.4 in (Apr 19, 1993) and as low as 5.8 in (Mar 26, 2002). The 1991–2020 average peak is 16 in around Apr 2.
| Water year | Peak SWE (in) | Peak date | % of normal peak | April 1 SWE (in) | Days of data |
|---|---|---|---|---|---|
| 2026 | 8 | Feb 20, 2026 | 50% | 2 | 365 |
| 2025 | 9.6 | Mar 22, 2025 | 60% | 7.5 | 365 |
| 2024 | 17.2 | Apr 1, 2024 | 108% | 17.2 | 366 |
| 2023 | 26.5 | Apr 4, 2023 | 166% | 26.3 | 365 |
| 2022 | 12.7 | Apr 1, 2022 | 79% | 12.7 | 365 |
| 2021 | 14.4 | Mar 26, 2021 | 90% | 14.1 | 365 |
| 2020 | 19.2 | Mar 30, 2020 | 120% | 19.2 | 366 |
| 2019 | 25 | Apr 3, 2019 | 156% | 24.9 | 365 |
| 2018 | 6.8 | Mar 19, 2018 | 43% | 6.2 | 365 |
| 2017 | 19.6 | Mar 6, 2017 | 123% | 16.5 | 365 |
| 2016 | 11.9 | Feb 7, 2016 | 74% | 9.1 | 366 |
| 2015 | 11.6 | Mar 6, 2015 | 73% | 8.1 | 365 |
| 2014 | 14.7 | Apr 6, 2014 | 92% | 13.8 | 365 |
| 2013 | 13.7 | Mar 25, 2013 | 86% | 12.7 | 365 |
| 2012 | 13.1 | Mar 10, 2012 | 82% | 8.6 | 366 |
| 2011 | 14.9 | Mar 27, 2011 | 93% | 14 | 365 |
| 2010 | 17.8 | Mar 28, 2010 | 111% | 17.7 | 365 |
| 2009 | 15.3 | Apr 5, 2009 | 96% | 15 | 365 |
| 2008 | 27.2 | Apr 16, 2008 | 170% | 25.1 | 366 |
| 2007 | 11.5 | Mar 11, 2007 | 72% | 10.4 | 365 |
| 2006 | 13.1 | Apr 8, 2006 | 82% | 11.8 | 365 |
| 2005 | 30.6 | Apr 9, 2005 | 191% | 30.4 | 365 |
| 2004 | 18.9 | Mar 3, 2004 | 118% | 14.8 | 366 |
| 2003 | 14.3 | Mar 22, 2003 | 89% | 14 | 365 |
| 2002 | 5.8 | Mar 26, 2002 | 36% | 2.8 | 365 |
| 2001 | 24 | Apr 14, 2001 | 150% | 20.8 | 365 |
| 2000 | 13.1 | Apr 1, 2000 | 82% | 13.1 | 366 |
| 1999 | 14.3 | Apr 9, 1999 | 89% | 7.7 | 365 |
| 1998 | 20.2 | Apr 18, 1998 | 126% | 16.8 | 365 |
| 1997 | 28.5 | Feb 28, 1997 | 178% | 24.8 | 365 |
| 1996 | 11.9 | Apr 19, 1996 | 74% | 11.6 | 366 |
| 1995 | 26.4 | May 7, 1995 | 165% | 24.2 | 365 |
| 1994 | 14.3 | Apr 30, 1994 | 89% | 12.2 | 365 |
| 1993 | 34.4 | Apr 19, 1993 | 215% | 32.3 | 365 |
| 1992 | 24.8 | Apr 2, 1992 | 155% | 24.7 | 366 |
| 1991 | 14 | Mar 31, 1991 | 88% | 14 | 365 |
| 1990 | 13.9 | May 2, 1990 | 87% | 8.9 | 365 |
| 1989 | 23.8 | Mar 9, 1989 | 149% | 21.8 | 365 |
| 1988 | 10.3 | Mar 16, 1988 | 64% | 9.1 | 366 |
| 1987 | 30.4 | Apr 12, 1987 | 190% | 28.4 | 365 |
Water years with fewer than 150 days of data are omitted. Data: NRCS National Water and Climate Center AWDB (station 843:CO:SNTL), pulled nightly; current-year values are provisional. Station location: 37.4852, -107.5075. Other stations in the San Juan basin are listed on the basin page.