Coralville Lake lake and shoreline

Coralville Lake Water Level

Iowa

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Coralville Lake

Coralville Lake is currently 3.2 feet above full pool, with a water-surface elevation of 686.2 feet.

686.16 ft · Updated 4 hours ago · USACE MVR District

Current level

686.16ft

+3.16 ft vs full pool

High

Vs full pool

Since last reading

Down 0.05 ft

Previous readingOct 24686.3 ft

7-day change

Up 0.10 ft

7-day trend: Stable

8 daily readings in the last 7 days

30-day change

Up 1.40 ft

30 daily readings in the last 30 days

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Water Level History

Current
686.16 ft
24h
-0.05 ft
7d
+0.10 ft
30d
+1.40 ft

Elevation (ft) NGVD29 · MSL

Reference line is designed full pool.

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Lake Level Context

Level remains above the full pool

Coralville Lake is currently 686.16 ft, 3.16 ft above its full pool. The lake has risen 0.10 ft over the past 7 days and 1.40 ft over the past 30 days.

Coralville Lake Level Details

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

Conditions & Reference

Level status

3.16 ft above full pool

Current level
686.16 ft
Full pool
683 ft
DatumElevation referenced to National Geodetic Vertical Datum of 1929.
NGVD29
Elevation reference
MSL
Source
USACE MVR District

Reference levels

  • Full pool683 ft
  • Flood stage712 ft

Surrounding county drought

No Drought

No official drought (D1–D4) reported for the surrounding county.

Severity

NoneExtreme
Trend
Stable

Surrounding county drought

Johnson County, IA

No Drought

No Drought. No USDM drought categories are reported for Johnson County, IA. These figures describe the surrounding county from the lake location, not the lake itself.. Trend: Stable compared with last week. Official drought (D1–D4) no

Severity

NoneExtreme

Weekly trend

Stable

Compared with last week

Official drought (D1–D4)

No

No D1–D4 area is reported for the surrounding county.

U.S. Drought Monitor · map date Oct 20, 2026. Updated weekly. Official drought means U.S. Drought Monitor categories D1–D4 (Moderate through Exceptional). Abnormally Dry (D0) is not counted as official drought. droughtmonitor.unl.eduView drought map for Johnson County, IA

Daily level summary

DateLevelChange
Oct 25, 2026686.25-0.05
Oct 24, 2026686.3+0.02
Oct 23, 2026686.28+0.09
Oct 22, 2026686.190
Oct 21, 2026686.19-0.03
Oct 20, 2026686.22+0.07
Oct 19, 2026686.150

Common questions about Coralville Lake’s water level

  • The current water level at Coralville Lake is 686.16 ft (updated 4 hours ago). You can track the Coralville Lake lake level on the interactive chart and daily history above.

  • Full pool for Coralville Lake is 683 ft — the normal conservation target elevation when the reservoir is at its designed summer or operating pool.

  • Over the past seven days the Coralville Lake lake level has held relatively steady — the current 7-day trend is Stable. The history chart above shows the full trend.

  • Based on the latest gauge reading, Coralville Lake is currently 3.16 ft above full pool.

Lake level glossary

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

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