4140.24 ft NAVD88
level 21.8 ft below full pool — this gauge's public record is too short for seasonal comparisons
Reading comes straight from U.S. Geological Survey National Water Information System (USGS gauge 10312100) and updates live when you load this page.
This year vs the years that matter
This year's trace against last year and the driest and wettest years on record — the drought-context question every lake regular asks.
- 2024 (wettest on record)
- 2021 (driest on record)
- 2025 (last year)
- 2026 (this year)
Full pool, datum, and the gauge
"Full pool" here means the conservation pool — the level the lake is designed to hold for water supply and recreation, not the flood-control space above it. The full explainer covers flood pool and dead pool too.
| Full pool | 4162.00 ft NAVD88 · per USBR Newlands Project / TCID full-pool reference |
|---|---|
| Gauge | USGS gauge 10312100 · U.S. Geological Survey National Water Information System |
| Datum | NAVD88 — Gauge is 62615 NAVD88; USBR top of active conservation 4,162.0 ft is project datum - possible small datum offset (NGVD29-NAVD88 ~ +3-4 ft here), flag on page. Site also publishes 00062. |
| Last verified | August 15, 2026 |
LakeDates reports lake level, not ramp status. Whether a given ramp or marina is usable at this level varies ramp by ramp — call the marina before you tow.
Quick answers
How full is Lahontan Reservoir right now?
Lahontan Reservoir is at 4140.24 ft (NAVD88) as of August 15, 2026 — 21.8 ft below full pool — this gauge's public record is too short for seasonal comparisons
Is Lahontan Reservoir full?
Not quite — at 4140.24 ft, Lahontan Reservoir is 21.8 ft below its full pool of 4162.00 ft (NAVD88).
What is full pool for Lahontan Reservoir?
Full pool (the conservation pool) for Lahontan Reservoir is 4162.00 ft NAVD88, per USBR Newlands Project / TCID full-pool reference. Levels above it use flood storage; levels below it are drawdown.