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River report

Mazon River Flow Today

As of October 3, 2026 at 1:45 AM, the Mazon River is flowing at 323 cfs near Coal City, IL and up 176% in 24 hours. ❤ Favorite

USGS gauges
1 1 reporting · upstream → down
Typical gauge
- of normal for the date
Biggest flow now
323cfs Coal City
Updated
Oct 3, 1:45 AM
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Mazon River map

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Every gauge, dam and paddle run on the river, one tap each:

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River briefing · Oct 3, 2026

Mazon 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 Coal City, the Mazon River is running 323 cfs, up 176% since yesterday.

In the last 24 hours the river is rising at Coal City (+176%).

Headwaters to mouth

How the Mazon 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

  1. Coal City529 ft 323 cfs

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.

Mazon River flow report

1 gauge
Streamgage Streamflow % of normal 24h Gage height To flood stage Elevation
Mazon River Near Coal City IL
Oct 3, 1:45 AM · USGS 05542000
323 cfs · +176% 2.56 ft 9.4 ft below 529 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.

Upstream storage

Dams & reservoirs on the Mazon River

Releases from these dams shape the flow downstream. Tap one for its daily level and history.

History

Mazon 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).

About this river

Mazon River

The Amazon River is the largest river in the world, flowing approximately 6,400 km from its source in the Andes Mountains to its mouth on the Atlantic Ocean. The river has a rich history, with indigenous peoples like the Tupi and Guarani relying on it for transportation and sustenance. Today, the river remains a vital resource for millions of people, providing water for agriculture and hydroelectric power. There are several reservoirs and dams along the river, including the Tucuruí Dam and the Balbina Dam, which have caused controversy due to their impact on local communities and ecosystems. However, the river is also a popular destination for recreational activities such as river cruises and fishing trips. Despite its importance, the Amazon River faces threats from deforestation, climate change, and pollution.

Around the river

Fishing near the Mazon River

FAQ

About the Mazon River

How is the Mazon River flowing right now?

As of October 3, 2026, the Mazon River is flowing at 323 cfs near Coal City, IL. Every gauge’s live reading is in the table above.

Is the Mazon River running high or low?

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.

What is flood stage on the Mazon River?

The National Weather Service sets flood stages for Coal City (12.0 ft). The table shows how far each gauge is below its flood stage right now.

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.

More river levels

Rivers in Illinois