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Lima Reservoir Upstream of Clark Canyon Reservoir water level

Reservoir, Montana, United States

Directions

Normal for mid-October

Surface elevation

6,567.31ft Up 0.18 ft over the last 7 days

Water stored
23,582 acre‑ft
6,560 6,570

History

6,5606,570ftOct 15Oct 16Oct 17Oct 18Oct 196,5606,570ftOct 15Oct 17Oct 19
6,5606,570ftSep 22Sep 28Oct 5Oct 12Oct 196,5606,570ftSep 22Oct 5Oct 19
6,5606,5706,580ftOct 2025Jan 2026Apr 2026Jul 2026Oct 20266,5606,5706,580ftOct 2025Apr 2026Oct 2026
6,5706,580ftOct 2016Apr 2019Oct 2021Apr 2024Oct 20266,5706,580ftOct 2016Oct 2021Oct 2026
6,5606,5706,580ftJanMarMayJulSepNov20266,5606,5706,580ftJanAprJulOct2026

202120222023202420252026

Surface elevation Normal range (10–90 %)

What this means

Nothing unusual at Lima Reservoir Upstream of Clark Canyon Reservoir right now: the lake level of 6,567.31 ft is in the normal range for mid-October.

That puts it 2.23 ft below the median of 6,569.54 ft for mid-October, based on 36 years of readings. A year ago it stood at 6,567.23 ft (+0.08 ft).

The water is rising: up 0.18 ft over the past week. Over the past 30 days it has moved between 6,566.87 ft and 6,567.31 ft.

Many reservoirs are drawn down through summer and fall; most of the refill comes later, with winter rain or spring snowmelt.

Compared with 36 years of daily readings for this time of year. How to read levels

Key numbers

Median for this date
6,569.54 ft2.23 ft below the median for this date
Normal for this date
6,556.25 ft – 6,574.73 ft8 years in 10 fall in this range (36 years of records)
Same day last year
6,567.23 ft+0.08 ft
Lowest and highest in 30 days
6,566.87 ft – 6,567.31 ft
Lowest and highest in 12 months
6,566.41 ft – 6,579.50 ft

Swimming and boating at Lima Reservoir Upstream of Clark Canyon Reservoir

At a normal level, ramps and marinas generally run as usual, and fishing tends to follow the season more than the water level.

If you swim, pick a spot with an easy way out, and remember that drop-offs move as the level changes.

Weather at the gauge

No rain in the last 3 days.

20 Tue 55° 37° – Wind 10 mph
21 Wed 56° 41° – Wind 14 mph
22 Thu 53° 40° 0.04 in, 44% Wind 22 mph
23 Fri 46° 32° 2.04 in, 96% Wind 10 mph
24 Sat 35° 31° 0.01 in, 69% Wind 4 mph
25 Sun 38° 24° – Wind 3 mph
26 Mon 40° 29° – Wind 4 mph

Forecast: Open-Meteo

Sunrise 07:53 AM Sunset 06:36 PM Daylight 10 hr, 43 min Waxing gibbous 75%

Map

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Red Rock R below Lima Reservoir near Monida MTRiver gauge, Red Rock R 11.8 cfs Low ±0 0.0 mi
Medicine Lodge Creek near SmallRiver gauge, Medicine Lodge Creek 4.76 ft Below flood stage −0.01 ft 27 mi
Clark Canyon ReservoirReservoir 5,517.09 ft Normal 34 mi
Beaverhead River at Barretts MTRiver gauge, Beaverhead River 92.6 cfs Very low ±0 37 mi
Ruby River above reservoir near AlderRiver gauge, Ruby River 101 cfs Low −2.0 cfs 39 mi
Beaverhead River at Dillon MTRiver gauge, Beaverhead River 84.1 cfs Very low −1.7 cfs 41 mi
Madison River at Kirby Ranch near Cameron MTRiver gauge, Madison River 779 cfs Low −9.0 cfs 42 mi
Ruby River below reservoir near AlderRiver gauge, Ruby River 52.2 cfs Low ±0 42 mi

Questions and answers

How does Lima Reservoir Upstream of Clark Canyon Reservoir compare with last year?

It is 0.08 ft higher than on the same day last year, when the reading was 6,567.23 ft.

What is a normal level for Lima Reservoir Upstream of Clark Canyon Reservoir in mid-October?

The median for mid-October is 6,569.54 ft. In 8 years out of 10 the reading falls between 6,556.25 ft and 6,574.73 ft, based on 36 years of records.

Is Lima Reservoir Upstream of Clark Canyon Reservoir really 6,567.31 ft deep?

No. 6,567.31 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 Lima Reservoir Upstream of Clark Canyon Reservoir today?

On Oct 19, 2026, the surface elevation was 6,567.31 ft. Up 0.18 ft over the last 7 days.

Is Lima Reservoir Upstream of Clark Canyon Reservoir rising or falling?

Up 0.18 ft over the last 7 days.

Is the level of Lima Reservoir Upstream of Clark Canyon Reservoir normal?

Normal 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:398 (Agency page)
Coordinates
44.65610, -112.37060 (WGS84)
Update interval
once a day
Licence
Public domain. Data: U.S. Bureau of Reclamation (RISE), provisional data subject to revision

Published series

ParameterLast valueTime (UTC)Quality
Surface elevation 6,567.31 ft 2026-10-19 06:00 Provisional
Water stored 23,582 acre‑ft 2026-10-19 06:00 Provisional

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How to cite

U.S. Bureau of Reclamation: Lima Reservoir Upstream of Clark Canyon Reservoir (usbr:398). Accessed October 21, 2026 via Nivelmap, https://nivelmap.com/en/united-states/montana/lima-reservoir-upstream-of-clark-canyon-reservoir

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