Mazon River Flow Today
As of October 23, 2026 at 1:45 AM, the Mazon River is flowing at 30 cfs near Coal City, IL — 203% of normal for the date and down 3% in 24 hours. ❤ Favorite
Mazon River map
See the Mazon River on a live map
Every gauge, dam and paddle run on the river, one tap each:
- Gauges now — which reaches are high or low
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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 30 cfs — 203% of normal, down 3% since yesterday. Along the river, 1 of 1 reporting gauges are above normal (the typical gauge is at 203% of normal).
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
- Coal City529 ft 30 cfs203%
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 Mazon River streamgauge, placed by its own percent of normal. The line is the typical gauge (203%).
Mazon River flow report
| Streamgage | Streamflow | % of normal | 24h | Gage height | To flood stage | Elevation |
|---|---|---|---|---|---|---|
|
Mazon River Near Coal City IL
Oct 23, 1:45 AM · USGS 05542000 |
30 cfs | 203% | -3% | 1.34 ft | 10.7 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.
Dams & reservoirs on the Mazon River
Releases from these dams shape the flow downstream. Tap one for its daily level and 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).
Mazon River
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Fishing near the Mazon River
About the Mazon River
How is the Mazon River flowing right now?
As of October 23, 2026, the Mazon River is flowing at 30 cfs near Coal City, IL, about 203% of normal for the date. Every gauge’s live reading is in the table above.
Is the Mazon River running high or low?
The typical gauge on the Mazon River is at 203% 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.
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.