Reservoir · California · United States · CDEC
FRIANT DAM (MILLERTON)
44.3% full
Capacity
642.03 hm³
Volume stored
285 hm³
Coordinates
37.001°N, 119.705°W
Last updated
2026-09-21
Current fill
44.3%vs 7 days ago
-0.1%losing
vs 1 year ago
-4.5%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: 2026-09-21.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 37.001, -119.705 · Open in Google Maps
About FRIANT DAM (MILLERTON)
As of September 21, 2026, FRIANT DAM (MILLERTON) is filled to 44.3% of its total capacity, holding roughly 285 hm³ of water out of a maximum 642 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 (-0.1 pts), and it is 4.5 points below its level on the same date a year earlier.
Across the readings we hold for FRIANT DAM (MILLERTON) — 1822 data points between September 24, 2021 and September 21, 2026 — the level has ranged from a low of 26.6% (November 8, 2023) to a high of 101.6% (July 19, 2023). On average the reservoir is fullest around June and at its lowest around November.
It is operated by CDEC primarily for multiple purposes. It lies within the California basin at 37.001°N, 119.705°W.
Key facts
- Current fill level
- 44.3%
- Water stored
- 285 hm³
- Total capacity
- 642 hm³
- 7-day change
- ▼ 0.1 pts
- Year-on-year
- ▼ 4.5 pts
- Primary use
- Multipurpose
- River basin
- California
- Operator
- CDEC
- Coordinates
- 37.001°N, 119.705°W
- Last updated
- September 21, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 21 Sep 2026 | 44.3% | 285 |
| 20 Sep 2026 | 44.2% | 284 |
| 19 Sep 2026 | 44.0% | 283 |
| 18 Sep 2026 | 43.9% | 282 |
| 17 Sep 2026 | 43.9% | 282 |
| 16 Sep 2026 | 43.9% | 282 |
| 15 Sep 2026 | 44.1% | 283 |
| 14 Sep 2026 | 44.4% | 285 |
| 13 Sep 2026 | 44.7% | 287 |
| 12 Sep 2026 | 44.8% | 287 |
| 11 Sep 2026 | 44.9% | 288 |
| 10 Sep 2026 | 44.8% | 288 |