Illinois River OBrien Lock and Dam
Loading live water release, lake level, and weather data…
Illinois River OBrien Lock and Dam
Loading live water release, lake level, and weather data…
Fishing report & water release — real-time flow and lake level
Live activity
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1.5 ft above normal pool
At or above flood pool (0.4 FT)
River stage below the dam (tailwater) — different from outflow (CFS) and lake pool elevation.
Estimated holding depth based on season, temperature, and flow.
Fall Feeding Push
Bait and predators push shallower during low-light periods.
Season
Oct
Weather at the ramp
Barometric pressure.
Good for reading surface activity.
For lake fishing conditions
Quick view of the official National Weather Service point forecast for this lake, tuned for boat and bank anglers.
NOAA forecast data is not available for this location right now.
Forecast data provided by NOAA / National Weather Service (`weather.gov`).
Get notified when flow changes
Get email notifications when water levels change. Set a custom threshold to be notified when conditions match your target.
Custom flow limit (CFS)
Get a personalized read on whether to fish today, plus bait and strategy tailored to your target species.
Analysis uses current outflow, level, water temp, weather, and pressure trend.
Prefer to send it yourself? Email info@alert.catchdamfish.com with "Illinois River OBrien LD, IL" in the subject or body — include the state so we pick the right lake if names overlap. We'll reply with the report.
Live activity
See who's going, join a trip, or share what worked on this lake.
Measured in ft
Level Scale
Reading Log: 7-Day Temporal Window
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The latest water level at Illinois River OBrien Lock and Dam is about 0.75 ft. That is currently high (1.5 ft above normal pool). See the live level chart above for the latest trend.
Illinois River OBrien Lock and Dam is located in IL, near Chicago. It is monitored by the U.S. Army Corps of Engineers (USACE), and this page tracks its real-time water release, lake level, and local weather.