Long Run near Lemont, IL
Is Long Run near Lemont, IL flooding right now?
Long Run near Lemont, IL measured 0.83 ft on 2026-11-11 15:00:00 UTC. That observation was 5.2 ft below its 6 ft flood stage. This is the latest available reading, not a guarantee of current conditions.
Gauge height
0.83 ft
Streamflow
5 cfs
Minor flooding here begins at 6 ft, with major flooding at 10 ft. The highest crest on record was 11.1 ft on Thu, Jul 18, 1996.
Streamflow outlook
Flood stages at this gauge
| Category | Stage | Current distance |
|---|---|---|
| Action | 5 ft | 4.2 ft below |
| Minor flood | 6 ft | 5.2 ft below |
| Moderate flood | 8 ft | 7.2 ft below |
| Major flood | 10 ft | 9.2 ft below |
Highest crests on record
| Stage | Date |
|---|---|
| 11.1 ft | 1996-07-18 |
| 9.91 ft | 1954-10-10 |
| 9.37 ft | 1957-07-13 |
| 9.01 ft | 1981-06-13 |
| 8.94 ft | 2011-06-09 |
Last 7 days
Nearby gauges
| Gauge | Distance | County |
|---|---|---|
| Chicago Sanitary and Ship Canal at Lemont, IL | 2.5 mi | Cook County |
| Des Plaines River near Lemont, IL | 2.5 mi | Will County |
| Chicago Sanitary and Ship Canal at Romeoville, IL | 3.1 mi | Will County |
| Des Plaines River at Romeoville, IL | 3.5 mi | Will County |
| Chicago Sanitary and Ship Canal near Lemont, IL | 3.8 mi | DuPage County |
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Provisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.