Lake Elwell and Tiber water level
Lake, Montana, United States
Right now
High for mid-October
Surface elevation
- Water stored
- 820,055 acre‑ft
History
202120222023202420252026
What this means
Lake Elwell and Tiber is above normal at 2,987.25 ft.
That puts it 2.00 ft above the median of 2,985.25 ft for mid-October, based on 36 years of readings. A year ago it stood at 2,980.14 ft (+7.11 ft).
It has dropped 0.27 ft over the past week. In the last month it has stayed between 2,987.25 ft and 2,988.25 ft.
Lakes and reservoirs often sit lower in fall after a summer of evaporation and use, and recover with winter rain and spring snowmelt.
Compared with 36 years of daily readings for this time of year. How to read levels
Key numbers
- Median for this date
- 2,985.25 ft2.00 ft above the median for this date
- Normal for this date
- 2,980.18 ft – 2,987.62 ft8 years in 10 fall in this range (36 years of records)
- Same day last year
- 2,980.14 ft+7.11 ft
- Lowest and highest in 30 days
- 2,987.25 ft – 2,988.25 ft
- Lowest and highest in 12 months
- 2,979.56 ft – 2,993.72 ft
On the water at Lake Elwell and Tiber
With the level a bit above normal, expect a shoreline slightly higher up than usual and the odd floating branch.
Wear a life jacket on the water. Most boating deaths involve people who were not wearing one.
Weather at the gauge
No rain in the last 3 days.
Forecast: Open-Meteo
Map
Nearby gauges
| Gauge | Level | Compared with normal | 24 hours | Distance |
|---|---|---|---|---|
| Marias River near Chester MTRiver gauge, Marias River | 515 cfs | Normal | ±0 | 1.0 mi |
| Willow Creek near GalataRiver gauge, Willow Creek | 0.0 cfs | Normal | ±0 | 15 mi |
| Marias River near Loma MTRiver gauge, Marias River | 484 cfs | Normal | +7.0 cfs | 35 mi |
| Marias River near Shelby MTRiver gauge, Marias River | 2.81 ft | Below flood stage | −0.04 ft | 37 mi |
| Teton River at Loma MTRiver gauge, Teton River | 2.21 ft | No reference yet | +0.04 ft | 38 mi |
| Missouri River at Fort Benton MTRiver gauge, Missouri River | 2.01 ft | Below flood stage | +0.05 ft | 40 mi |
| Missouri River at Virgelle MTRiver gauge, Missouri River | 3.01 ft | Below flood stage | +0.02 ft | 44 mi |
Questions and answers
How does Lake Elwell and Tiber compare with last year?
It is 7.11 ft higher than on the same day last year, when the reading was 2,980.14 ft.
What is a normal level for Lake Elwell and Tiber in mid-October?
The median for mid-October is 2,985.25 ft. In 8 years out of 10 the reading falls between 2,980.18 ft and 2,987.62 ft, based on 36 years of records.
Is Lake Elwell and Tiber really 2,987.25 ft deep?
No. 2,987.25 ft is the height of the water surface above sea level (or the agency's vertical datum), not the depth of the water.
What is the water level of Lake Elwell and Tiber today?
On Oct 18, 2026, the surface elevation was 2,987.25 ft. Down 0.27 ft over the last 7 days.
Is Lake Elwell and Tiber rising or falling?
Down 0.27 ft over the last 7 days.
Is the level of Lake Elwell and Tiber normal?
High for mid-October. Compared with 36 years of daily readings for this time of year.
How often is this data updated?
The U.S. Bureau of Reclamation publishes a new reading once a day. This page refreshes within minutes of each update.
For specialists
Station codes, datum, parameters, data quality and downloads
- Operator
- U.S. Bureau of Reclamation
- Station code
usbr:396(Agency page)- Coordinates
48.31830, -111.09080(WGS84)- Update interval
- once a day
- Licence
- Public domain. Data: U.S. Bureau of Reclamation (RISE), provisional data subject to revision
Published series
| Parameter | Last value | Time (UTC) | Quality |
|---|---|---|---|
| Surface elevation | 2,987.25 ft | 2026-10-18 06:00 | Provisional |
| Water stored | 820,055 acre‑ft | 2026-10-18 06:00 | Provisional |
Download
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How to cite
U.S. Bureau of Reclamation: Lake Elwell and Tiber (usbr:396). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/united-states/montana/lake-elwell-and-tiber
How we check values
Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.
Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer