Helena Valley Reservoir
Source: U.S. Bureau of Reclamation (RISE)
NW 5 mph · rain 0%
WSW 3 mph · rain 0%
Level history
Field notes
Helena Valley Reservoir's latest daily level (Oct 24, 2026) is 3,817.59 (NAVD88) ft.
Reclamation reports storage of 9,217 acre-feet for the same day.
Over the past 7 days the lake has been falling (−0.13 ft), and it is −2.14 ft over 30 days.
Compared with a year ago (3,817.56 ft), the lake is at about the same level.
Readings come from the Bureau of Reclamation's daily reservoir data for Helena Valley Reservoir and Dam.
Lake facts
| Storage (latest) | 9,217 acre-feet |
|---|---|
| Gauge / station | Helena Valley Reservoir and Dam |
| Elevation datum | ft (NAVD88) |
| Gauge location | 46.6381, -111.8822 |
Nearby lakes
Common questions
Is Helena Valley Reservoir rising or falling?
Over the last 7 days it changed −0.13 ft and over 30 days −2.14 ft.
How full is Helena Valley Reservoir?
Reclamation publishes the water surface elevation for this gauge but not a percent-full figure, so we don't show one rather than estimate it.
How often is this page updated?
The page is rebuilt automatically every day from Reclamation's published data. Values can be revised later by the source agency.
Where does the data come from?
The U.S. Bureau of Reclamation's RISE data portal (data.usbr.gov). Forecasts come from the National Weather Service.
Daily values published by the Bureau of Reclamation. Reclamation data are provisional and subject to revision unless otherwise noted. This page is not affiliated with or endorsed by the Bureau of Reclamation. See data sources.