Reservoir · Nevada · United States · USGS NWIS
Walker Lake
81.4% full
Capacity
1,729.34 hm³
Volume stored
1407 hm³
Coordinates
38.677°N, 118.772°W
Last updated
2026-09-30
Current fill
81.4%vs 7 days ago
-0.2%losing
vs 1 year ago
-7.0%year-over-year
7-day trend
→stable
Data source: USGS National Water Information System (NWIS) — daily reservoir storage volume. Design capacity is unavailable for this site, so fill % is estimated against the 5-year maximum storage and may overstate fullness. 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. 38.677, -118.772 · Open in Google Maps
About Walker Lake
As of September 30, 2026, Walker Lake is filled to 81.4% of its total capacity, holding roughly 1,407 hm³ of water out of a maximum 1,729 hm³. At this level the reservoir is high.
Over the most recent week on record the fill level has held broadly steady (-0.2 pts), and it is 7.0 points below its level on the same date a year earlier.
Across the readings we hold for Walker Lake — 1461 data points between October 1, 2022 and September 30, 2026 — the level has ranged from a low of 67.5% (December 28, 2022) to a high of 100.0% (June 12, 2024). On average the reservoir is fullest around July and at its lowest around December.
It is operated by USGS primarily for multiple purposes. It lies within the Nevada basin at 38.677°N, 118.772°W.
Key facts
- Current fill level
- 81.4%
- Water stored
- 1,407 hm³
- Total capacity
- 1,729 hm³
- 7-day change
- ▼ 0.2 pts
- Year-on-year
- ▼ 7.0 pts
- Primary use
- Multipurpose
- River basin
- Nevada
- Operator
- USGS
- Coordinates
- 38.677°N, 118.772°W
- Last updated
- September 30, 2026
Recent readings
| Date | Fill level | Volume (hm³) |
|---|---|---|
| 30 Sep 2026 | 81.4% | 1,407 |
| 29 Sep 2026 | 81.4% | 1,407 |
| 28 Sep 2026 | 81.4% | 1,407 |
| 27 Sep 2026 | 81.5% | 1,409 |
| 26 Sep 2026 | 81.5% | 1,410 |
| 25 Sep 2026 | 81.5% | 1,410 |
| 24 Sep 2026 | 81.6% | 1,411 |
| 23 Sep 2026 | 81.6% | 1,411 |
| 22 Sep 2026 | 81.6% | 1,411 |
| 21 Sep 2026 | 81.7% | 1,412 |
| 20 Sep 2026 | 81.7% | 1,412 |
| 19 Sep 2026 | 81.7% | 1,414 |