Reservoir · California · United States · CDEC
Shasta Lake
66.0% full
Capacity
5,614.92 hm³
Volume stored
3705 hm³
Coordinates
40.718°N, 122.420°W
Last updated
2026-08-03
Current fill
66.0%vs 7 days ago
-2.6%losing
vs 1 year ago
-4.0%year-over-year
7-day trend
↓falling
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. 40.718, -122.420 · Open in Google Maps
About Shasta Lake
As of August 3, 2026, Shasta Lake is filled to 66.0% of its total capacity, holding roughly 3,705 hm³ of water out of a maximum 5,615 hm³. At this level the reservoir is within its normal operating range.
Over the most recent week on record the fill level has fallen by 2.6 percentage points, and it is 4.0 points below its level on the same date a year earlier.
Across the readings we hold for Shasta Lake — 1825 data points between August 5, 2021 and August 3, 2026 — the level has ranged from a low of 21.3% (October 20, 2021) to a high of 98.1% (May 24, 2023). On average the reservoir is fullest around May and at its lowest around November.
It is operated by CDEC primarily for multiple purposes. It lies within the California basin at 40.718°N, 122.420°W.
Key facts
- Current fill level
- 66.0%
- Water stored
- 3,705 hm³
- Total capacity
- 5,615 hm³
- 7-day change
- ▼ 2.6 pts
- Year-on-year
- ▼ 4.0 pts
- Primary use
- Multipurpose
- River basin
- California
- Operator
- CDEC
- Coordinates
- 40.718°N, 122.420°W
- Last updated
- August 3, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 3 Aug 2026 | 66.0% | 3,705 |
| 2 Aug 2026 | 66.3% | 3,723 |
| 1 Aug 2026 | 66.7% | 3,744 |
| 31 Jul 2026 | 67.1% | 3,768 |
| 30 Jul 2026 | 67.5% | 3,790 |
| 29 Jul 2026 | 67.9% | 3,812 |
| 28 Jul 2026 | 68.2% | 3,831 |
| 27 Jul 2026 | 68.6% | 3,851 |
| 26 Jul 2026 | 68.9% | 3,870 |
| 25 Jul 2026 | 69.3% | 3,891 |
| 24 Jul 2026 | 69.7% | 3,916 |
| 23 Jul 2026 | 70.2% | 3,939 |
Frequently asked questions
What is the current water level of Shasta Lake?
As of August 3, 2026, Shasta Lake is at 66.0% of its capacity, holding approximately 3,705 hm³ of water, according to CDEC (CA DWR) data.
Is Shasta Lake reservoir full?
No. As of August 3, 2026, Shasta Lake is within its normal operating range at 66.0% of its capacity, so it is not full.
Is the water level at Shasta Lake rising or falling?
The level at Shasta Lake is falling — it dropped 2.6 percentage points over the latest week on record.
How much water can Shasta Lake hold?
Shasta Lake has a total capacity of 5,615 hm³.
Where is Shasta Lake reservoir located?
Shasta Lake is located in California, United States, within the California basin (coordinates 40.718°N, 122.420°W).
What is Shasta Lake used for?
Shasta Lake is used primarily for multiple purposes, and is managed by CDEC.