What is the current water level of Lock and Dam 27 Pool?

As of Jul 29, 2026, 1:00 PM (UTC+00:00), the pool elevation was 399.07 ft (datum NAVD88). See the trend chart above for the recent direction.

Is Lock and Dam 27 Pool full right now?

Its managing agency does not publish a %-of-conservation-pool-full figure for this lake, so we show the bare level rather than estimate one.

Lock and Dam 27 Pool water level — Illinois

Illinois · USACE · reading Jul 29, 2026, 1:00 PM (UTC+00:00)

Lock and Dam 27 Pool in Illinois was last measured at 399.07 ft (datum NAVD88), as of Jul 29, 2026, 1:00 PM (UTC+00:00) (USACE CWMS Data). Over its recent trend window the level has been falling (−9.9 ft).

Current reading Lock and Dam 27 Pool · Illinois

Pool elevation: 399.07 ft
% of conservation pool full: Not reported
Storage: Not reported
Recent trend: ↓Falling

Recent trend

Readings this station published between Jun 2, 2026 and Jul 29, 2026 — a 57-day window — downsampled for display.

Data: USGS Water Services (waterservices.usgs.gov) and USACE CWMS Data (cwms-data.usace.army.mil), retrieved 2026-08-31. Both public domain (a work of the U.S. Government, 17 U.S.C. §105).

Not for navigation or safety decisions (why →)

Source: USACE MVS/LD 27 Pool-Mississippi, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00). Official page for this lake →

Other gauges at this site

A second gauge reports at this same structure. Its readings are listed here rather than on a separate page, because it measures the same water.

Companion gauges at Lock and Dam 27 Pool, with their own current readings.
Gauge	Source	Elevation	Storage
Lock and Dam 27 Tw	USACE MVS/LD 27 TW-Mississippi	384.96 ft (NAVD88)	—

How Lock and Dam 27 Pool compares nearby

3 of 6 nearby lakes with a current trend are also falling right now.

Nearby lakes

The six nearest published lakes by centroid distance (great-circle) — cross-state neighbors included.

Lakes nearest to Lock and Dam 27 Pool, with current level and distance.
Lake	State	Level	Distance
Lock and Dam 27 Tw	IL	384.96 ft	0 km
Mel Price Pool	IL	416.86 ft	19 km
Pump Station 1	IL	407.63 ft	19 km
Valley Park	MO	419.24 ft	30 km
Arnold	MO	380.58 ft	31 km
Valley Park	MO	389.47 ft	32 km

Frequently asked questions

What is the current water level of Lock and Dam 27 Pool?: As of Jul 29, 2026, 1:00 PM (UTC+00:00), the pool elevation was 399.07 ft (datum NAVD88). See the trend chart above for the recent direction.
Is Lock and Dam 27 Pool full right now?: Its managing agency does not publish a %-of-conservation-pool-full figure for this lake, so we show the bare level rather than estimate one.
Where does this data come from?: From USACE MVS/LD 27 Pool-Mississippi, retrieved Aug 31, 2026, 8:24 AM (UTC+00:00).

More in Illinois

See every lake tracked in Illinois, or read the methodology behind these figures.