Thornapple River near Caledonia water level

Name: Thornapple River near Caledonia water level (U.S. Geological Survey)
Creator: U.S. Geological Survey
License: https://www.usgs.gov/information-policies-and-instructions/copyrights-and-credits

River gauge, Thornapple River, Michigan, United States

Directions

Below flood stage

Water level

3.70ft Up 0.07 ft over the last 24 hours

Measured Oct 19, 2026, 09:15 AM EDT (23 min ago)

History

7 days

Water level Minor flood stage

What this means

The gauge at Thornapple River near Caledonia reads 3.70 ft, a normal level.

It is 6.30 ft below the flood stage of 10.00 ft.

The water is rising: up 0.07 ft over the past 24 hours. There is still 6.30 ft of room before flood stage. Over the past 30 days it has moved between 3.50 ft and 3.86 ft.

Fall is often low-water season on rivers, until steadier rain returns.

Judged against the official flood stage for this gauge. How to read levels

Key numbers

Highest on record: 14.40 ftApril 7, 1947

What the stage means on the water

A normal level is usually prime time for floating and wade fishing, as long as the weather holds upstream.

The National Weather Service puts flood stage for this gauge at 10.00 ft, still 6.30 ft away.

What happens at each level

13.00 ft: Thornapple River Drive is flooded.
11.00 ft: High water begins to impact home on island below Cascade Dam.
10.00 ft: Minor flooding of low lying areas occurs.
8.00 ft: River is bankfull. Expect overflow into low lying areas along the river.
3.70 ft: Right now

Impact statements from the U.S. National Weather Service.

Highest crests on record

Chance of at least minor flooding in October to December: < 5 %.

Rank	Level	Date
1	14.40 ft	April 7, 1947
2	11.79 ft	February 24, 2018
3	11.69 ft	April 19, 2013
4	11.50 ft	May 21, 2020
5	11.43 ft	February 27, 1985
6	11.35 ft	April 6, 2023
7	11.21 ft	May 26, 2004
8	10.96 ft	April 22, 1975
9	10.79 ft	May 10, 1956
10	10.60 ft	February 22, 1997

Weather at the gauge

The forecast is not available right now.

Sunrise 08:00 AM Sunset 06:55 PM Daylight 10 hr, 54 min First quarter 59%

Map

Other gauges on the Thornapple River

Gauge	Level	Compared with normal	24 hours	Distance
Thornapple River near HastingsRiver gauge, Thornapple River	3.32 ft	Below flood stage	−0.02 ft	18 mi

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Grand River at AdaRiver gauge, Grand River	7.33 ft	Below flood stage	+0.12 ft	10 mi
Plaster Creek at 28th Street at Grand RapidsRiver gauge, Plaster Creek	12.9 cfs	Low	−3.4 cfs	11 mi
Grand River at Grand RapidsRiver gauge, Grand River	1.83 ft	Below flood stage	+0.17 ft	14 mi
Buck Creek at Wilson Avenue at GrandvilleRiver gauge, Buck Creek	4.63 ft	Below flood stage	−0.02 ft	15 mi
Grand River at State Highway M-11 at GrandvilleRiver gauge, Grand River	2,110 cfs	Normal	+230 cfs	16 mi
Rabbit River near HopkinsRiver gauge, Rabbit River	22.7 cfs	Low	−14.4 cfs	17 mi
Rogue River near RockfordRiver gauge, Rogue River	3.82 ft	Below flood stage	−0.02 ft	20 mi
Flat River at SmyrnaRiver gauge, Flat River	3.38 ft	Below flood stage	−0.02 ft	20 mi

Questions and answers

What is flood stage for the Thornapple River near Caledonia?

The official flood stage is 10.00 ft. The level is currently 6.30 ft below it.

Is gage height the same as water depth?

No. Gage height is measured from a fixed reference point chosen by the agency, so a reading of 10 ft does not mean the river is 10 ft deep.

What is the water level of Thornapple River near Caledonia today?

On Oct 19, 2026, 09:15 AM EDT, the water level was 3.70 ft. Up 0.07 ft over the last 24 hours.

Is Thornapple River near Caledonia rising or falling?

Up 0.07 ft over the last 24 hours.

Is the level of Thornapple River near Caledonia normal?

Below flood stage. Judged against the official flood stage for this gauge.

What is the highest water level ever recorded at Thornapple River near Caledonia?

The highest level on record is 14.40 ft on April 7, 1947.

How often is this data updated?

The U.S. Geological Survey publishes a new reading every 15 minutes. This page refreshes within minutes of each update.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: U.S. Geological Survey
Station code: usgs:04118000 (Agency page)
Coordinates: 42.81114, -85.48335 (WGS84)
Vertical datum: NAVD88
Update interval: every 15 minutes
Licence: Public domain. Data: U.S. Geological Survey (USGS), provisional data subject to revision

Published series

Parameter	Last value	Time (UTC)	Quality
Water level	3.70 ft	2026-10-19 13:15	Provisional

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How to cite

U.S. Geological Survey: Thornapple River near Caledonia (usgs:04118000). Accessed October 19, 2026 via Nivelmap, https://nivelmap.com/en/united-states/michigan/thornapple-river-near-caledonia

How we check values

Each reading is stored as published. We hold back values that jump faster than physically plausible and show the measurement time with every value.

Readings are provisional, can be delayed or wrong and are not a flood warning. Read the disclaimer