Reservoir · California · United States · CDEC
New Melones Reservoir
59.2% full
Capacity
3,355.07 hm³
Volume stored
1985 hm³
Coordinates
37.948°N, 120.525°W
Last updated
2026-08-03
Current fill
59.2%vs 7 days ago
-0.6%losing
vs 1 year ago
-3.9%year-over-year
7-day trend
→stable
Data source: CDEC — California Dept of Water Resources — daily reservoir storage volume. Capacity is the design (normal full-pool) capacity from the US National Inventory of Dams (NID); fill % = current volume ÷ design capacity. Last reading: 2026-08-03.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 37.948, -120.525 · Open in Google Maps
About New Melones Reservoir
As of August 3, 2026, New Melones Reservoir is filled to 59.2% of its total capacity, holding roughly 1,985 hm³ of water out of a maximum 3,355 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has held broadly steady (-0.6 pts), and it is 3.9 points below its level on the same date a year earlier.
Across the readings we hold for New Melones Reservoir — 1825 data points between August 5, 2021 and August 3, 2026 — the level has ranged from a low of 21.4% (November 1, 2022) to a high of 77.4% (June 7, 2024). On average the reservoir is fullest around June and at its lowest around October.
It is operated by CDEC primarily for multiple purposes. It lies within the California basin at 37.948°N, 120.525°W.
Key facts
- Current fill level
- 59.2%
- Water stored
- 1,985 hm³
- Total capacity
- 3,355 hm³
- 7-day change
- ▼ 0.6 pts
- Year-on-year
- ▼ 3.9 pts
- Primary use
- Multipurpose
- River basin
- California
- Operator
- CDEC
- Coordinates
- 37.948°N, 120.525°W
- Last updated
- August 3, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 3 Aug 2026 | 59.2% | 1,985 |
| 2 Aug 2026 | 59.2% | 1,988 |
| 1 Aug 2026 | 59.3% | 1,990 |
| 31 Jul 2026 | 59.4% | 1,994 |
| 30 Jul 2026 | 59.5% | 1,997 |
| 29 Jul 2026 | 59.6% | 2,000 |
| 28 Jul 2026 | 59.7% | 2,003 |
| 27 Jul 2026 | 59.8% | 2,005 |
| 26 Jul 2026 | 59.9% | 2,009 |
| 25 Jul 2026 | 59.9% | 2,011 |
| 24 Jul 2026 | 60.0% | 2,014 |
| 23 Jul 2026 | 60.1% | 2,018 |
Frequently asked questions
What is the current water level of New Melones Reservoir?
As of August 3, 2026, New Melones Reservoir is at 59.2% of its capacity, holding approximately 1,985 hm³ of water, according to CDEC (CA DWR) data.
Is New Melones Reservoir reservoir full?
No. As of August 3, 2026, New Melones Reservoir is within its normal operating range at 59.2% of its capacity, so it is not full.
Is the water level at New Melones Reservoir rising or falling?
The level at New Melones Reservoir has been broadly stable over the latest week on record (-0.6 points).
How much water can New Melones Reservoir hold?
New Melones Reservoir has a total capacity of 3,355 hm³.
Where is New Melones Reservoir reservoir located?
New Melones Reservoir is located in California, United States, within the California basin (coordinates 37.948°N, 120.525°W).
What is New Melones Reservoir used for?
New Melones Reservoir is used primarily for multiple purposes, and is managed by CDEC.