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Illinois River Water Level

Live gauge height for Illinois River, measured at USGS station Missouri River at Hermann, MO (7.1 mi from the nearest mapped ramp).

Current gauge height
4.40 ft
Updated 39 min ago
vs. 30-day average
-2.12 ft
30-day avg: 6.52 ft
Water temperature
85°F

30-Day Water Level Trend

2026-08-03Range: 4.54–10.96 ft2026-09-02

Illinois River is currently 2.1 ft below its 30-day average — shallow ramps may have less water at the end of the concrete; trim up early and check local reports before launching.

Boat Ramps on Illinois River (8)

See all Illinois River boat ramps →

Illinois River Water Level FAQ

What is the water level of Illinois River today?

The USGS gauge for Illinois River (Missouri River at Hermann, MO) currently reads a gauge height of 4.40 feet, 2.1 ft below its 30-day average. Readings update throughout the day from USGS instrumentation.

Is Illinois River high or low right now?

Compared with the past 30 days, Illinois River is 2.1 ft below its 30-day average.

Where can I launch a boat on Illinois River?

BoatLaunchMap lists 8 boat ramps on Illinois River, each with directions, ratings, and launch details.

Data: U.S. Geological Survey, station 06934500. Gauge height is measured relative to the station datum, not lake depth. Always verify conditions on site before launching.