States

Gibson Reservoir

Montana · Reclamation gauge
4,6004,6504,700
Grey bar: 12-month range 4,610.2–4,724.0 ft.
Water level · NGVD29
4,611.30FT
Storage 5,862 acre-feet
The source publishes no % full figure.
7 days −1.47 ft30 days −8.53 ft
Reading for Oct 24, 2026 · page refreshed Oct 25, 21:16 UTC
Source: U.S. Bureau of Reclamation (RISE)
Worth going today?This Afternoon
Looks good
Light wind, dry
Wind6 mph
Rain6%
Temp37°F
Level4,611.3 ft
This AfternoonPatchy Fog · 37°F
E 6 mph · rain 6%
TonightMostly Cloudy · 25°F
ENE 0 to 3 mph · rain 4%
NWS forecast for the gauge location. Good = wind ≤ 10 mph and rain ≤ 30%; storms are flagged. Not safety advice – check local conditions, closures and warnings.

Level history

4,6124,6144,6164,6184,620ftSep 24Oct 2Oct 9Oct 16Oct 24
4,6124,6144,6164,6184,620ftSep 24Oct 9Oct 24
4,6004,6504,700ftDec 2025Mar 2026May 2026Aug 2026Oct 2026
4,6004,6504,700ftDec 2025May 2026Oct 2026

Field notes

On Oct 24, 2026, Gibson Reservoir was at 4,611.30 (NGVD29) ft.

Reclamation reports storage of 5,862 acre-feet for the same day.

Over the past 7 days the lake has been falling (−1.47 ft), and it is −8.53 ft over 30 days.

Readings come from the Bureau of Reclamation's daily reservoir data for Gibson Reservoir and Dam.

Lake facts

Storage (latest)5,862 acre-feet
Gauge / stationGibson Reservoir and Dam
Elevation datumft (NGVD29)
Gauge location47.6008, -112.7617

Nearby lakes

Pishkun Reservoir13 mi NE4,349.24 ft±0.00 ftWillow Creek Reservoir16 mi E4,130.25 ft+1.12 ftFlathead Lake65 mi W2,891.62 ft−0.32 ftHungry Horse Reservoir77 mi NW3,540.53 ft−1.23 ftHelena Valley Reservoir78 mi SE3,817.59 ft−0.13 ft

Common questions

Is Gibson Reservoir rising or falling?

Over the last 7 days it changed −1.47 ft and over 30 days −8.53 ft.

How full is Gibson 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.