Reservoir · Nevada · United States · USGS NWIS
Lahontan Reservoir
40.7% full
Capacity
391.26 hm³
Volume stored
159 hm³
Coordinates
39.462°N, 119.068°W
Last updated
2026-08-13
Current fill
40.7%vs 7 days ago
-3.2%losing
vs 1 year ago
+3.7%year-over-year
7-day trend
↓falling
Data source: USGS National Water Information System (NWIS) — 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: 2026-08-13.
Catchment Weather
Past 30 days + 14-day forecast · Open-Meteo
Satellite imagery: Esri, Maxar, Earthstar Geographics. Map: Esri, HERE, Garmin, © OpenStreetMap contributors. 39.462, -119.068 · Open in Google Maps
About Lahontan Reservoir
As of August 13, 2026, Lahontan Reservoir is filled to 40.7% of its total capacity, holding roughly 159 hm³ of water out of a maximum 391 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 3.2 percentage points, and it is 3.7 points above its level on the same date a year earlier.
Across the readings we hold for Lahontan Reservoir — 1461 data points between August 14, 2022 and August 13, 2026 — the level has ranged from a low of 3.0% (October 17, 2022) to a high of 95.7% (May 31, 2024). On average the reservoir is fullest around June and at its lowest around November.
It is operated by USGS primarily for multiple purposes. It lies within the Nevada basin at 39.462°N, 119.068°W.
Key facts
- Current fill level
- 40.7%
- Water stored
- 159 hm³
- Total capacity
- 391 hm³
- 7-day change
- ▼ 3.2 pts
- Year-on-year
- ▲ 3.7 pts
- Primary use
- Multipurpose
- River basin
- Nevada
- Operator
- USGS
- Coordinates
- 39.462°N, 119.068°W
- Last updated
- August 13, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 13 Aug 2026 | 40.7% | 159 |
| 12 Aug 2026 | 41.1% | 161 |
| 11 Aug 2026 | 41.6% | 163 |
| 10 Aug 2026 | 42.1% | 165 |
| 9 Aug 2026 | 42.5% | 166 |
| 8 Aug 2026 | 43.0% | 168 |
| 7 Aug 2026 | 43.5% | 170 |
| 6 Aug 2026 | 43.9% | 172 |
| 5 Aug 2026 | 44.4% | 174 |
| 4 Aug 2026 | 44.9% | 176 |
| 3 Aug 2026 | 45.3% | 177 |
| 2 Aug 2026 | 45.8% | 179 |
Frequently asked questions
What is the current water level of Lahontan Reservoir?
As of August 13, 2026, Lahontan Reservoir is at 40.7% of its capacity, holding approximately 159 hm³ of water, according to USGS NWIS data.
Is Lahontan Reservoir reservoir full?
No. As of August 13, 2026, Lahontan Reservoir is within its normal operating range at 40.7% of its capacity, so it is not full.
Is the water level at Lahontan Reservoir rising or falling?
The level at Lahontan Reservoir is falling — it dropped 3.2 percentage points over the latest week on record.
How much water can Lahontan Reservoir hold?
Lahontan Reservoir has a total capacity of 391 hm³.
Where is Lahontan Reservoir reservoir located?
Lahontan Reservoir is located in Nevada, United States, within the Nevada basin (coordinates 39.462°N, 119.068°W).
What is Lahontan Reservoir used for?
Lahontan Reservoir is used primarily for multiple purposes, and is managed by USGS.