Keystone Lake lake and shoreline

Keystone Lake Water Level

Officially Keystone Lake (Arkansas River)

Oklahoma

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Keystone Lake

Keystone Lake is currently 2.3 feet below full pool, with a water-surface elevation of 720.7 feet.

720.66 ft · Updated 2 hours ago · U.S. Army Corps of Engineers

Current level

720.66ft

−2.34 ft vs full pool

Normal

Vs full pool

Since last reading

Down 0.15 ft

Previous readingOct 4720.94 ft

7-day change

Down 0.28 ft

7-day trend: Falling

8 daily readings in the last 7 days

30-day change

Down 1.58 ft

31 daily readings in the last 30 days

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Water Level History

Current
720.66 ft
24h
-0.15 ft
7d
-0.28 ft
30d
-1.58 ft

Elevation (ft) NGVD29 · MSL

Reference line is designed full pool.

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Lake Level Context

Level remains below the full pool

Keystone Lake is currently 720.66 ft, 2.34 ft below its full pool. The lake has fallen 0.28 ft over the past 7 days and 1.58 ft over the past 30 days.

Keystone Lake Level Details

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

Conditions & Reference

Level status

2.34 ft below full pool

Current level
720.66 ft
Full pool
723 ft
DatumElevation referenced to National Geodetic Vertical Datum of 1929.
NGVD29
Elevation reference
MSL
Source
USACE

Reference levels

  • Full pool723 ft
  • Flood stage754 ft

Watershed drought

Moderate Drought

100% of watershed in official drought (D1+).

Severity

NoneExtreme
Trend
Stable

Watershed drought conditions

Osage County, OK

Moderate Drought

Moderate Drought. Moderate drought is affecting the watershed.. Trend: Stable compared with last week. Official drought yes

Severity

NoneExtreme

Weekly trend

Stable

Compared with last week

Official drought

Yes

100% of the watershed is currently classified as official drought (D1+).

Expected impacts

  • Stream inflows may run below normal
  • Lake levels can decline faster between rain events
  • Vegetation stress may increase over time

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

Daily level summary

DateLevelChange
Oct 5, 2026720.79-0.15
Oct 4, 2026720.94-0.08
Oct 3, 2026721.02+0.1
Oct 2, 2026720.92-0.03
Oct 1, 2026720.95+0.01
Sep 30, 2026720.94-0.04
Sep 29, 2026720.98-0.09

Common questions about Keystone Lake’s water level

  • The current water level at Keystone Lake is 720.66 ft (updated 2 hours ago). You can track the Keystone Lake lake level on the interactive chart and daily history above.

  • Full pool for Keystone Lake is 723 ft — the normal conservation target elevation when the reservoir is at its designed summer or operating pool.

  • The current 7-day trend for the Keystone Lake lake level is falling — falling about 0.28 ft over the past week. See the history chart above for the full picture.

  • Based on the latest gauge reading, Keystone Lake is currently 2.34 ft below full pool.

Lake level glossary

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

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