Reservoir · California · United States · CDEC
Lake Cachuma
101.5% full
Capacity
212.78 hm³
Volume stored
216 hm³
Coordinates
34.583°N, 119.980°W
Last updated
2026-08-02
Current fill
101.5%vs 7 days ago
-0.5%losing
vs 1 year ago
+10.2%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: 2026-08-02.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 34.583, -119.980 · Open in Google Maps
About Lake Cachuma
As of August 2, 2026, Lake Cachuma is filled to 101.5% of its total capacity, holding roughly 216 hm³ of water out of a maximum 213 hm³. At this level the reservoir is effectively full.
Over the most recent week on record the fill level has held broadly steady (-0.5 pts), and it is 10.2 points above its level on the same date a year earlier.
Across the readings we hold for Lake Cachuma — 1815 data points between August 5, 2021 and August 2, 2026 — the level has ranged from a low of 35.3% (December 7, 2022) to a high of 105.0% (January 19, 2023). On average the reservoir is fullest around February and at its lowest around November.
It is operated by CDEC primarily for multiple purposes. It lies within the California basin at 34.583°N, 119.980°W.
Key facts
- Current fill level
- 101.5%
- Water stored
- 216 hm³
- Total capacity
- 213 hm³
- 7-day change
- ▼ 0.5 pts
- Year-on-year
- ▲ 10.2 pts
- Primary use
- Multipurpose
- River basin
- California
- Operator
- CDEC
- Coordinates
- 34.583°N, 119.980°W
- Last updated
- August 2, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 2 Aug 2026 | 101.5% | 216 |
| 1 Aug 2026 | 101.5% | 216 |
| 31 Jul 2026 | 101.7% | 216 |
| 30 Jul 2026 | 101.7% | 216 |
| 29 Jul 2026 | 101.8% | 217 |
| 28 Jul 2026 | 101.9% | 217 |
| 27 Jul 2026 | 102.0% | 217 |
| 26 Jul 2026 | 102.0% | 217 |
| 25 Jul 2026 | 102.1% | 217 |
| 24 Jul 2026 | 102.2% | 217 |
| 23 Jul 2026 | 102.3% | 218 |
| 22 Jul 2026 | 102.4% | 218 |
Frequently asked questions
What is the current water level of Lake Cachuma?
As of August 2, 2026, Lake Cachuma is at 101.5% of its capacity, holding approximately 216 hm³ of water, according to CDEC (CA DWR) data.
Is Lake Cachuma reservoir full?
Lake Cachuma is essentially full, sitting at 101.5% of capacity as of August 2, 2026.
Is the water level at Lake Cachuma rising or falling?
The level at Lake Cachuma has been broadly stable over the latest week on record (-0.5 points).
How much water can Lake Cachuma hold?
Lake Cachuma has a total capacity of 213 hm³.
Where is Lake Cachuma reservoir located?
Lake Cachuma is located in California, United States, within the California basin (coordinates 34.583°N, 119.980°W).
What is Lake Cachuma used for?
Lake Cachuma is used primarily for multiple purposes, and is managed by CDEC.