Idaho snowpack
54.0%
April 1 snow water equivalent, percent of median, 2026 (estimate)
Source: USDA Natural Resources Conservation Service, SNOTEL: 1 April Snow Water Equivalent, Percent of Median. Data period 2026. Status: estimate. Newest release as of ; next expected by April 2027.
1 April snow water equivalent as a percent of the 1991-2020 median, aggregated statewide across active SNOTEL stations: the sum of each station's reading divided by the sum of each station's median, times 100.
Note on this value: Statewide index computed from 81 SNOTEL stations.
Historical data
Source: NRCS, SNOTEL: 1 April Snow Water Equivalent, Percent of Median.
Data table (46 rows)
| Period | Idaho (percent) |
|---|---|
| 1981 | 76.0% |
| 1982 | 164.0% |
| 1983 | 149.0% |
| 1984 | 120.0% |
| 1985 | 116.0% |
| 1986 | 115.0% |
| 1987 | 72.0% |
| 1988 | 83.0% |
| 1989 | 122.0% |
| 1990 | 83.0% |
| 1991 | 90.0% |
| 1992 | 64.0% |
| 1993 | 104.0% |
| 1994 | 68.0% |
| 1995 | 115.0% |
| 1996 | 114.0% |
| 1997 | 167.0% |
| 1998 | 94.0% |
| 1999 | 146.0% |
| 2000 | 108.0% |
| 2001 | 54.0% |
| 2002 | 116.0% |
| 2003 | 94.0% |
| 2004 | 92.0% |
| 2005 | 71.0% |
| 2006 | 134.0% |
| 2007 | 77.0% |
| 2008 | 129.0% |
| 2009 | 105.0% |
| 2010 | 75.0% |
| 2011 | 127.0% |
| 2012 | 112.0% |
| 2013 | 80.0% |
| 2014 | 107.0% |
| 2015 | 50.0% |
| 2016 | 105.0% |
| 2017 | 120.0% |
| 2018 | 101.0% |
| 2019 | 110.0% |
| 2020 | 101.0% |
| 2021 | 93.0% |
| 2022 | 75.0% |
| 2023 | 125.0% |
| 2024 | 92.0% |
| 2025 | 109.0% |
| 2026 | 54.0% |
Snow water equivalent
10.8 inches in 2026 (estimate). Mean 1 April snow water equivalent, in inches, across the active SNOTEL stations the percent-of-median figure uses that year (a station with both a valid reading and a valid median). A mean across stations, not a statewide total. The percent of median is the ratio of the summed readings to the summed medians, so dividing this mean by the mean median does not reproduce it.
Source: NRCS, SNOTEL: 1 April Snow Water Equivalent, Percent of Median.
Data table (46 rows)
| Period | Snow water equivalent (inches) | Snow water equivalent, median (inches) |
|---|---|---|
| 1981 | 14.8 | 19.4 |
| 1982 | 31.7 | 19.4 |
| 1983 | 30.9 | 20.7 |
| 1984 | 25.2 | 21.1 |
| 1985 | 25.4 | 21.9 |
| 1986 | 25.1 | 21.9 |
| 1987 | 15.5 | 21.5 |
| 1988 | 17.9 | 21.5 |
| 1989 | 26.1 | 21.3 |
| 1990 | 17.8 | 21.3 |
| 1991 | 19.0 | 21.2 |
| 1992 | 13.6 | 21.2 |
| 1993 | 21.8 | 21.1 |
| 1994 | 14.1 | 20.9 |
| 1995 | 24.0 | 20.9 |
| 1996 | 23.6 | 20.8 |
| 1997 | 34.7 | 20.8 |
| 1998 | 19.4 | 20.8 |
| 1999 | 30.4 | 20.8 |
| 2000 | 22.5 | 20.8 |
| 2001 | 11.3 | 21.0 |
| 2002 | 23.6 | 20.4 |
| 2003 | 19.3 | 20.4 |
| 2004 | 18.5 | 20.2 |
| 2005 | 14.3 | 20.2 |
| 2006 | 27.1 | 20.2 |
| 2007 | 15.5 | 20.2 |
| 2008 | 26.1 | 20.2 |
| 2009 | 21.2 | 20.2 |
| 2010 | 15.0 | 20.0 |
| 2011 | 25.5 | 20.0 |
| 2012 | 22.4 | 20.0 |
| 2013 | 16.0 | 20.0 |
| 2014 | 21.5 | 20.0 |
| 2015 | 10.1 | 20.0 |
| 2016 | 21.1 | 20.0 |
| 2017 | 24.0 | 20.0 |
| 2018 | 20.4 | 20.2 |
| 2019 | 22.0 | 20.0 |
| 2020 | 20.3 | 20.0 |
| 2021 | 18.6 | 20.0 |
| 2022 | 15.0 | 20.0 |
| 2023 | 25.2 | 20.2 |
| 2024 | 18.4 | 20.0 |
| 2025 | 21.9 | 20.1 |
| 2026 | 10.8 | 20.0 |
Source
- Organization
- USDA Natural Resources Conservation Service
- Dataset
- SNOTEL: 1 April Snow Water Equivalent, Percent of Median
- Geography
- Idaho, statewide
- Time coverage
- 1981-2026
- Update frequency
- Annual
- Newest release as of
- ; next expected by April 2027
- Original file
- https://wcc.sc.egov.usda.gov/awdbRestApi/services/v1/data
- Methodology
- https://wcc.sc.egov.usda.gov/reports/UpdateReport.html?report=Idaho
- License
- Public domain. U.S. federal government work.
- Our copy
- SNOTEL: 1 April Snow Water Equivalent, Percent of Median
Caveats
- This is a statewide figure: the sum of each station's 1 April reading divided by the sum of each station's median, times 100.
- Each station needs at least 10 years of record before NRCS gives it a median; years before 1981 are excluded for this reason.
- The number of contributing stations changes year to year as Idaho's SNOTEL network has grown.
- Values are rounded to the nearest whole percent.
- The snow water equivalent and median figures are the mean, not the sum, of the contributing stations' own 1 April values and medians, because the station set is not fixed year to year. Their ratio is not the percent of median, which is the ratio of the two sums; the two agree only when every station's own ratio is identical. NRCS's live Update Report prints a percent for each basin and none for the state, and no absolute snow water equivalent for any basin or the state, so both figures are computed here from the same per-station API values the percent uses.
Cite as Understand Idaho, “Idaho snowpack”, https://understandidaho.com/water/snowpack/; cite the publisher above for the figures. See the data catalog.
This page was last updated .