6530.49 ft NGVD29
level 4.4 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 06038000) and updates live when you load this page.
Is Hebgen Lake full?
Not quite — 4.4 ft below full pool as of September 23, 2026
How full is Hebgen Lake? Not as a percentage: no storage figure comes through with this gauge reading, and a share of capacity worked out from the elevation alone would be a guess — how much water a reservoir holds at a given level is a curve only the operator's own capacity table knows. Feet from full pool is what the operator publishes, and it is the figure above.
This year vs the years that matter
This year's trace against the finished years this gauge has published. Its public daily record begins in 2023, so the driest and wettest years are not named yet: that takes 8 finished years, and the lake regulars will remember wetter and drier years than any line here.
- 2026 (this year)
- 2025 (last year)
- 2024
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 | 6534.87 ft NGVD29 · per NorthWestern Energy full-pool reference |
|---|---|
| Gauge | USGS gauge 06038000 · U.S. Geological Survey National Water Information System |
| Datum | NGVD29 |
| 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
What is the lake level for Hebgen Lake today?
Hebgen Lake is at 6530.49 ft (NGVD29) as of September 23, 2026 — 4.4 ft below full pool — this gauge's public record is too short for seasonal comparisons.
Is Hebgen Lake full?
Not quite — at 6530.49 ft on September 23, 2026, Hebgen Lake is 4.4 ft below its full pool of 6534.87 ft (NGVD29).
How full is Hebgen Lake?
Not as a percentage: no storage figure comes through with this gauge reading, and a share of capacity worked out from the elevation alone would be a guess — how much water a reservoir holds at a given level is a curve only the operator's own capacity table knows. Feet from full pool is what the operator publishes, and it is the figure above.
What is full pool for Hebgen Lake?
Full pool (the conservation pool) for Hebgen Lake is 6534.87 ft NGVD29, per NorthWestern Energy full-pool reference. Levels above it use flood storage; levels below it are drawdown.