Nivelmap
EN

Clark Canyon Reservoir water level

Reservoir, Montana, United States

Directions

Right now

Normal for mid-October

Surface elevation

5,516.99ft Up 0.75 ft over the last 7 days

Water stored
58,672 acre‑ft
5,510 5,520 5,530 5,540

History

History
5,5105,5205,5305,540ftOct 13Oct 14Oct 15Oct 16Oct 185,5105,5205,5305,540ftOct 13Oct 15Oct 18
5,5105,5205,5305,540ftSep 20Sep 27Oct 4Oct 11Oct 185,5105,5205,5305,540ftSep 20Oct 4Oct 18
5,5205,540ftOct 2025Jan 2026Apr 2026Jul 2026Oct 20265,5205,540ftOct 2025Apr 2026Oct 2026
5,5205,540ftOct 2016Apr 2019Oct 2021Apr 2024Oct 20265,5205,540ftOct 2016Oct 2021Oct 2026
5,5205,540ftJanMarMayJulSepNov20265,5205,540ftJanAprJulOct2026

202120222023202420252026

Surface elevation Normal range (10–90 %)

What this means

The lake level at Clark Canyon Reservoir reads 5,516.99 ft, about where it usually sits at this time of year.

That puts it 5.21 ft below the median of 5,522.20 ft for mid-October, based on 36 years of readings. A year ago it stood at 5,517.50 ft (−0.51 ft).

It is on the way up, by 0.75 ft over the past week. The 30-day range is 5,514.71 ft – 5,516.99 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
5,522.20 ft5.21 ft below the median for this date
Normal for this date
5,509.12 ft – 5,540.55 ft8 years in 10 fall in this range (36 years of records)
Same day last year
5,517.50 ft−0.51 ft
Lowest and highest in 30 days
5,514.71 ft – 5,516.99 ft
Lowest and highest in 12 months
5,513.58 ft – 5,532.15 ft

Boating and fishing at Clark Canyon Reservoir

A lake in its usual range is what most ramps, docks and swimming areas are built for.

Conditions at the shore change with the level, so check with the agency that runs the lake before a trip.

Weather at the gauge

No rain in the last 3 days.

18 Sun 66° 38° – Wind 15 mph
19 Mon 67° 41° – Wind 20 mph
20 Tue 65° 44° 0.00 in Wind 7 mph
21 Wed 64° 44° – Wind 11 mph
22 Thu 68° 44° 0.03 in, 49% Wind 17 mph
23 Fri 49° 40° 0.09 in, 70% Wind 6 mph
24 Sat 53° 32° – Wind 9 mph

Forecast: Open-Meteo

Sunrise 07:53 AM Sunset 06:41 PM Daylight 10 hr, 48 min First quarter 61%

Map

Nearby gauges

Gauge Level Compared with normal 24 hours Distance
Beaverhead River at Barretts MTRiver gauge, Beaverhead River 92.6 cfs Very low −2.0 cfs 9 mi
Beaverhead River at Dillon MTRiver gauge, Beaverhead River 85.8 cfs Very low −1.7 cfs 18 mi
Beaverhead River near Twin Bridges MTRiver gauge, Beaverhead River 4.16 ft Below flood stage −0.02 ft 33 mi
Big Timber Creek above Mouth at Leadore IDRiver gauge, Big Timber Creek 6.4 cfs Very high +0.5 cfs 33 mi
Big Hole River near Glen MTRiver gauge, Big Hole River 487 cfs Normal −8.0 cfs 34 mi
Red Rock R below Lima Reservoir near Monida MTRiver gauge, Red Rock R 12.7 cfs Low ±0 34 mi
Lima Reservoir Upstream of Clark Canyon ReservoirReservoir 6,567.28 ft Normal 34 mi
Big Hole River near Melrose MTRiver gauge, Big Hole River 1.84 ft Below flood stage −0.02 ft 37 mi

Questions and answers

How does Clark Canyon Reservoir compare with last year?

It is 0.51 ft lower than on the same day last year, when the reading was 5,517.50 ft.

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

The median for mid-October is 5,522.20 ft. In 8 years out of 10 the reading falls between 5,509.12 ft and 5,540.55 ft, based on 36 years of records.

Is Clark Canyon Reservoir really 5,516.99 ft deep?

No. 5,516.99 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 Clark Canyon Reservoir today?

On Oct 18, 2026, the surface elevation was 5,516.99 ft. Up 0.75 ft over the last 7 days.

Is Clark Canyon Reservoir rising or falling?

Up 0.75 ft over the last 7 days.

Is the level 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:294 (Agency page)
Coordinates
45.00170, -112.85750 (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 5,516.99 ft 2026-10-18 06:00 Provisional
Water stored 58,672 acre‑ft 2026-10-18 06:00 Provisional

Download

Embed this gauge

Add a live card for this gauge to your website. It updates on its own and links back here.

How to cite

U.S. Bureau of Reclamation: Clark Canyon Reservoir (usbr:294). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/united-states/montana/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.