Merced Subbasin GSA

San Joaquin Valley - Merced

What changed at each monthly refresh. Bold lines are notable changes. Subscribe to the RSS feed to get each update in a feed reader.

Readings through Sep 2026: first edition

• Kriged average 115 ft below ground in Sep 2026, 0.1 ft shallower than a year earlier. No readings in Jul–Sep 2026; the newest is from Mar 2026.
• 1 of 6 RMS wells read in the last 12 months is below its MT.
• Plan's undesirable-result rule met in the latest readings.
• NOAA-outlook forecast for Sep 2027: 112 ft below ground.
• Under the outlook the plan rule is met again by Oct 2026 (chance over 95%).

Forecasts use the NOAA outlook (CPC's Oct 2026 issue: water year 2027 at 122% of normal precipitation).