April 9, 2026
Core Supply Dashboard
WY 2025–26 Precipitation Forecast: Near Normal Overall, Slightly Wetter in the North
Following an “average” year in 2024–25, precipitation for water year 2025–26 is projected to be near normal across California. Forecast guidance suggests a modest north–south gradient, with conditions trending near to slightly above average in the northern portion of the Core Supply region and near to slightly-below average in the south.
See the Regional Sections for a more detailed breakdown by region.
The dashboard below shows the Core Supply status (Regions 2, 4, and 6, shaded blue) with observed data through April 6, 2026.
Core Supply:
CAP Forecast WY 2024-25
Core Supply:
Year-over-Year Comparison
Highlights
- March was dry. The Core Supply received a mere 0.09 inches of accumulation. The first few days of April were far wetter, with an accumulation of 1.14 inches. Together this resulted in a gain of 1.23 inches, increasing water year progress by approximately 4 percentage points.
- With a total water year accumulation of 25.31 inches, the Core Supply sits at 92.3% of water-year average, just 2.7 percentage points shy of the CAP forecast range.
- Because of the modest precipitation in March and early April, the current water year accumulation traces are now slightly below those of analog years 2018-19 and 2024-25. See the Insights Section for accompanying graphics and a comprehensive discussion of precipitation through March and into April.
- Please note, observed reservoir inflows through April 6, 2026, are available in the CRAFT section of the portal.
