3818.51 ft project datum
level Current reading shown; this gauge's public record is too short for seasonal comparisons.
Reading comes straight from U.S. Army Corps of Engineers Access to Water data (USACE series HVMT.Elev.Inst.1Hour.0.Best-NWO) 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.
- 2026 (this year)
- 2015 (wettest on record)
- 2014 (driest on record)
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 | not published by the operator |
|---|---|
| Gauge | USACE series HVMT.Elev.Inst.1Hour.0.Best-NWO · U.S. Army Corps of Engineers Access to Water data |
| Datum | project datum — The district publishes the gauge in the project's own datum. |
| Last verified | August 20, 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 Helena Valley Reservoir right now?
Helena Valley Reservoir is at 3818.51 ft (project datum) as of August 20, 2026 — Current reading shown; this gauge's public record is too short for seasonal comparisons.
Is Helena Valley Reservoir full?
Bureau of Reclamation (Helena Valley Dam) doesn't publish a conservation-pool figure for Helena Valley Reservoir, so this page shows the latest reading straight from the gauge.
What is full pool for Helena Valley Reservoir?
Bureau of Reclamation (Helena Valley Dam) doesn't publish a single conservation-pool elevation for Helena Valley Reservoir. The reading above comes straight from the operator's gauge.