Lake Koocanusa lake and shoreline

Lake Koocanusa Water Level

Officially Lake Koocanusa (Kootenai River)

Montana

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Lake Koocanusa

Lake Koocanusa is currently 14.9 feet below full pool, with a water-surface elevation of 2444.1 feet.

2444.10 ft · Updated Oct 5 · U.S. Bureau of Reclamation

Current level

2,444.1ft

−14.90 ft vs full pool

Low

Vs full pool

Since last reading

Up 0.01 ft

Previous readingOct 32,444.09 ft

7-day change

Down 0.06 ft

7-day trend: Falling

8 daily readings in the last 7 days

30-day change

Down 1.43 ft

21 daily readings in the last 30 days

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Water Level History

Current
2444.10 ft
24h
+0.01 ft
7d
-0.06 ft
30d
-1.43 ft

Elevation (ft) MSL

Reference line is designed full pool.

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Lake Level Context

Level remains below the full pool

Lake Koocanusa is currently 2444.10 ft, 14.90 ft below its full pool. The lake has fallen 0.06 ft over the past 7 days and 1.43 ft over the past 30 days.

Lake Koocanusa Level Details

Reference elevations, recent daily readings, data sources, and answers to common questions.

Conditions & Reference

Level status

14.9 ft below full pool

Current level
2,444.1 ft
Full pool
2,459 ft
DatumVertical reference for published pool and stage elevations at this lake (from the lake catalog).
Not available
Elevation reference
MSL
Source
USBR

Reference levels

  • Full pool2,459 ft

Watershed drought

Abnormally Dry

3.4% of watershed in official drought (D1+).

Severity

NoneExtreme
Trend
Improving

Watershed drought conditions

Lincoln County, MT

Abnormally Dry

Abnormally Dry. The surrounding county is abnormally dry, which is not official drought.. Trend: Improving compared with last week. Official drought yes

Severity

NoneExtreme

Weekly trend

Improving

Compared with last week

Official drought

Yes

3.4% of the watershed is currently classified as official drought (D1+).

U.S. Drought Monitor · map date Sep 29, 2026. Updated weekly. droughtmonitor.unl.eduView drought map for Lincoln County, MT

Daily level summary

DateLevelChange
Oct 4, 20262,444.1+0.01
Oct 3, 20262,444.090
Oct 2, 20262,444.09+0.06
Oct 1, 20262,444.03+0.01
Sep 30, 20262,444.02-0.04
Sep 29, 20262,444.06-0.07
Sep 28, 20262,444.13-0.03

Common questions about Lake Koocanusa’s water level

  • The current water level at Lake Koocanusa is 2,444.1 ft (updated Oct 5). You can track the Lake Koocanusa lake level on the interactive chart and daily history above.

  • Full pool for Lake Koocanusa is 2,459 ft — the normal conservation target elevation when the reservoir is at its designed summer or operating pool.

  • The current 7-day trend for the Lake Koocanusa lake level is falling — falling about 0.06 ft over the past week. See the history chart above for the full picture.

  • Based on the latest gauge reading, Lake Koocanusa is currently 14.90 ft below full pool.

Lake level glossary

Definitions for pool targets, datums, and how elevation readings are labeled.

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