Reservoir · California · United States · CDEC
ANTELOPE LAKE
75.7% full
Capacity
27.83 hm³
Volume stored
21 hm³
Vs month average
98% of normal
Coordinates
40.180°N, 120.607°W
Last updated
2026-10-31
Current fill
75.7%vs 7 days ago
-0.7 pplosing
vs 1 year ago
+2.9 ppyear-over-year
7-day trend
→stable
Drought context
Storage vs October average
98%of normal
75.7% full on 2026-10-31, against an average of 77.5% for October across 5 years of readings (-1.8 points).
Drought Monitor at this site · 27 October 2026
D0abnormally dry
The ground at ANTELOPE LAKE's coordinates falls inside the D0 area of the weekly U.S. Drought Monitor map. That describes local conditions — rainfall, soil moisture, streamflow — not the reservoir's storage. California drought figures →
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: 2026-10-31.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 40.180°N, 120.607°W · Open in Google Maps
About ANTELOPE LAKE
As of October 31, 2026, ANTELOPE LAKE is filled to 75.7% of its total capacity, holding 21.06 hm³ of water out of a maximum 27.83 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 (-0.7 pp), and it is 2.9 points above its level on the same date a year earlier.
Across the readings we hold for ANTELOPE LAKE — 1777 data points between November 3, 2021 and October 31, 2026 — the level has ranged from a low of 62.2% (December 4, 2021) to a high of 105.0% (May 26, 2023). On average the reservoir is fullest around April and at its lowest around December.
It is operated by CDEC primarily for multiple purposes. It is at 40.180°N, 120.607°W.
Key facts
- Current fill level
- 75.7% of total capacity
- Water stored
- 21.06 hm³
- Total capacity
- 27.83 hm³
- 7-day change
- ▼ 0.7 pp
- Year-on-year
- ▲ 2.9 pp
- Primary use
- Multipurpose
- Operator
- CDEC
- Coordinates
- 40.180°N, 120.607°W
- Last updated
- October 31, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 31 Oct 2026 | 75.7% | 21.06 |
| 30 Oct 2026 | 75.7% | 21.08 |
| 29 Oct 2026 | 75.9% | 21.11 |
| 28 Oct 2026 | 76.0% | 21.14 |
| 27 Oct 2026 | 76.1% | 21.17 |
| 26 Oct 2026 | 76.2% | 21.2 |
| 25 Oct 2026 | 76.3% | 21.23 |
| 24 Oct 2026 | 76.4% | 21.27 |
| 23 Oct 2026 | 76.5% | 21.3 |
| 22 Oct 2026 | 76.6% | 21.33 |
| 21 Oct 2026 | 76.7% | 21.35 |
| 20 Oct 2026 | 76.8% | 21.37 |