Reservoir · Nevada · United States · USGS NWIS
Lahontan Reservoir
24.3% full
Capacity
391.26 hm³
Volume stored
95 hm³
Coordinates
39.462°N, 119.068°W
Last updated
2026-09-30
Current fill
24.3%vs 7 days ago
-2.1%losing
vs 1 year ago
+3.0%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: 2026-09-30.
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 September 30, 2026, Lahontan Reservoir is filled to 24.3% of its total capacity, holding roughly 95 hm³ of water out of a maximum 391 hm³. At this level the reservoir is low.
Over the most recent week on record the fill level has fallen by 2.1 percentage points, and it is 3.0 points above its level on the same date a year earlier.
Across the readings we hold for Lahontan Reservoir — 1461 data points between October 1, 2022 and September 30, 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
- 24.3%
- Water stored
- 95 hm³
- Total capacity
- 391 hm³
- 7-day change
- ▼ 2.1 pts
- Year-on-year
- ▲ 3.0 pts
- Primary use
- Multipurpose
- River basin
- Nevada
- Operator
- USGS
- Coordinates
- 39.462°N, 119.068°W
- Last updated
- September 30, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 30 Sep 2026 | 24.3% | 95 |
| 29 Sep 2026 | 24.6% | 96 |
| 28 Sep 2026 | 24.9% | 98 |
| 27 Sep 2026 | 25.2% | 99 |
| 26 Sep 2026 | 25.5% | 100 |
| 25 Sep 2026 | 25.8% | 101 |
| 24 Sep 2026 | 26.1% | 102 |
| 23 Sep 2026 | 26.4% | 103 |
| 22 Sep 2026 | 26.8% | 105 |
| 21 Sep 2026 | 27.0% | 106 |
| 20 Sep 2026 | 27.3% | 107 |
| 19 Sep 2026 | 27.6% | 108 |