New Melones Lake Storage

Section: Reservoir Subtitle: Reservoir storage in San Joaquin basin, California

Current Status

New Melones Lake currently holds 1.68M acre-feet (af) of water, representing a 7% deficit vs. the 5-year median. The reservoir is tracking below historical averages for this time of year.

Trend Analysis

| Comparison | Current | Prior | Change | |-----------|---------|-------|--------| | Week over week | 1.68M af | 1.69M af | -1.1% | | Month over month | 1.68M af | 1.79M af | -6.1% | | Year over year | 1.68M af | 1.80M af | -6.7% | | vs 5-yr median | 1.68M af | 1.80M af | -6.7% |

Key Observations

• Short-term: Week-over-week decline is minimal (-1.1%), suggesting relative stability
• Medium-term: Storage has declined 6.1% over the past month
• Long-term: Year-over-year decline of 6.7% indicates sustained drawdown compared to the same period last year
• Historical: Consistent with 5-year median patterns, the reservoir is running approximately 6-7% below normal seasonal levels

Data Point

Latest observation: 1,675,920 af recorded on 2026-07-07 (362 historical data points in series)