Grand Calumet River Flow Today
As of October 14, 2026 at 3:30 AM, the Grand Calumet River is flowing at 423 cfs at Gary, IN — 91% of normal for the date and up 14% in 24 hours. ❤ Favorite
Grand Calumet River map
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Grand Calumet River conditions today
Where the river is running versus normal, what’s rising or dropping, and what it means for a trip — built from the live USGS readings below.
At Gary, the Grand Calumet River is running 423 cfs — 91% of normal, up 14% since yesterday. Along the river, 1 of 1 reporting gauges are near normal (the typical gauge is at 91% of normal).
In the last 24 hours the river is rising at Gary (+14%).
How the Grand Calumet River compares to normal
Every reporting gauge from the top of the river to the bottom: bar length is today’s flow, colour is percent of normal for the date.
Flow along the river, upstream to downstream
- Gary591 ft 423 cfs91%
Bar length uses a square-root scale so small headwater flows stay visible next to big downstream ones. Colour: <50% 50–90 90–110 110–150 150%+ of normal.
Where every gauge sits
One dot per Grand Calumet River streamgauge, placed by its own percent of normal. The line is the typical gauge (91%).
Grand Calumet River flow report
| Streamgage | Streamflow | % of normal | 24h | Gage height | Elevation |
|---|---|---|---|---|---|
|
Grand Calumet River At Industrial Hwy At Gary IN
Oct 14, 3:30 AM · USGS 04092677 |
423 cfs | 91% | +14% | 1.72 ft | 591 ft |
USGS provisional data. Readings are in each gauge’s local time; gauges silent for more than 3 days are marked “Last reported”. Tap any gauge for its hydrograph, forecast and history.
Grand Calumet River streamflow over time
Daily total flow across every monitored gauge on the river (this total last updated earlier; the live gauge readings above are current).
Grand Calumet River
The Grand Calumet River is a 13-mile-long river that flows through the northwest Indiana in the United States. The river has a long history of industrial pollution, which has led to its designation as one of the most polluted rivers in America. The hydrology of the river has been significantly altered by the construction of dams and reservoirs along its length, including the highly controversial Indiana Harbor and Ship Canal. These structures have been built in an effort to control the flow of the river, reduce flooding, and provide water for industrial and agricultural use. Despite its environmental challenges, the Grand Calumet River has some recreational uses, including fishing and boating. The river also supports some agriculture in the surrounding area, though the pollution levels in the river are a concern for farmers.
Fishing near the Grand Calumet River
About the Grand Calumet River
How is the Grand Calumet River flowing right now?
As of October 14, 2026, the Grand Calumet River is flowing at 423 cfs at Gary, IN, about 91% of normal for the date. Every gauge’s live reading is in the table above.
Is the Grand Calumet River running high or low?
The typical gauge on the Grand Calumet River is at 91% of normal for the date. Above 100% means higher than the historical average for this calendar day; below 100% means lower. The profile above shows which reaches are high or low.
Where does the data come from?
Discharge and gage height are from the USGS National Water Information System; flood stages from the National Weather Service. The history chart sums every monitored gauge on the river.
Can I get alerts for a gauge?
Yes — open any gauge from the table, favorite it in the Snoflo app and set a flow threshold.