Long Tom River at Monroe water level

Name: Long Tom River at Monroe 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, Long Tom River, Oregon, United States

Directions

Below flood stage

Water level

5.07ft Up 0.16 ft over the last 24 hours

Measured Oct 17, 2026, 08:15 PM PDT (15 min ago)

Flow: 498 cfs
Water temperature: 60 °F

History

7 days

Water level Forecast Minor flood stage

The forecast expects the river to rise to 5.36 ft by Sunday, October 25 at 11:00 PM. Issued Saturday, October 17 at 08:41 AM by NOAA National Weather Service.

What this means

Water levels are unremarkable at Long Tom River at Monroe, where the gauge shows 5.07 ft.

It is 3.93 ft below the flood stage of 9.00 ft.

It is on the way up, by 0.16 ft over the past 24 hours. The forecast expects the river to rise to 5.36 ft by Sunday, October 25 at 11:00 PM. There is still 3.93 ft of room before flood stage. The 30-day range is 4.76 ft – 5.07 ft.

The water temperature at the gauge is 60 °F.

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

Key numbers

Highest on record: 10.42 ftJanuary 15, 1974
Forecast peak: 5.36 ftSunday, October 25 at 11:00 PM

Paddling and fishing conditions

Most paddlers and anglers will find the river in good shape at this stage.

For reference, flood stage is 9.00 ft.

What happens at each level

12.00 ft: flooding impacts buildings in parts of Monroe, especially between Territorial Road and the river. Also expect flooding of the City Park, numerous farms in the area, and several rural roads.
11.00 ft: flooding threatens some buildings in Monroe between Territorial Road and the river, along with the City Park just north of Hwy 99 and numerous rural roads and farms.
10.00 ft: flooding impacts some roads and agricultural land in the vicinity of Monroe, and may threaten some homes in low-lying areas.
9.00 ft: flood waters threaten some roads and low-lying agricultural land in the vicinity of Monroe.
5.07 ft: Right now

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

Highest crests on record

Rank	Level	Date
1	10.42 ft	January 15, 1974
2	10.08 ft	February 7, 1996
3	10.06 ft	December 26, 1964
4	9.59 ft	January 21, 1972
5	9.54 ft	January 18, 2006
6	9.47 ft	December 6, 1981
7	9.33 ft	December 28, 1998
8	9.17 ft	February 22, 1986
9	9.11 ft	April 9, 2019
10	9.04 ft	November 19, 1996

Weather at the gauge

The forecast is not available right now.

Sunrise 07:33 AM Sunset 06:25 PM Daylight 10 hr, 53 min First quarter 46%

Map

Other gauges on the Long Tom River

Gauge	Level	Compared with normal	24 hours	Distance
Long Tom River near NotiRiver gauge, Long Tom River	15.2 cfs	Low	+0.5 cfs	19 mi
Long Tom River near AlvadoreRiver gauge, Long Tom River	488 cfs	Normal	+66.0 cfs	13 mi

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Willamette River at HarrisburgRiver gauge, Willamette River	1.60 ft	Below flood stage	±0	7 mi
Marys River near PhilomathRiver gauge, Marys River	1.92 ft	Below flood stage	±0	15 mi
East Fork Lobster Creek near AlseaRiver gauge, East Fork Lobster Creek	1.4 cfs	Normal	±0	17 mi
Willamette River at CorvallisRiver gauge, Willamette River	10.07 ft	Below flood stage	+0.08 ft	18 mi
McKenzie River near CoburgRiver gauge, McKenzie River	1,730 cfs	Low	+20.0 cfs	19 mi
Willamette River at EugeneRiver gauge, Willamette River	9.75 ft	Low	−0.01 ft	21 mi
Mohawk River near SpringfieldRiver gauge, Mohawk River	0.72 ft	Below flood stage	−0.01 ft	23 mi
Calapooia River at AlbanyRiver gauge, Calapooia River	18.9 cfs	Very low	±0	23 mi

Questions and answers

What is flood stage for the Long Tom River at Monroe?

The official flood stage is 9.00 ft. The level is currently 3.93 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 Long Tom River at Monroe today?

On Oct 17, 2026, 08:15 PM PDT, the water level was 5.07 ft. Up 0.16 ft over the last 24 hours.

Is Long Tom River at Monroe rising or falling?

Up 0.16 ft over the last 24 hours.

Is the level of Long Tom River at Monroe normal?

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

What is the highest water level ever recorded at Long Tom River at Monroe?

The highest level on record is 10.42 ft on January 15, 1974.

Is Long Tom River at Monroe expected to rise?

The forecast expects the river to rise to 5.36 ft by Sunday, October 25 at 11:00 PM.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: U.S. Geological Survey
Station code: usgs:14170000 (Agency page)
Coordinates: 44.31283, -123.29636 (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	5.07 ft	2026-10-18 03:15	Provisional
Flow	498 cfs	2026-10-18 03:15	Provisional
Water temperature	60 °F	2026-10-18 03:15	Provisional

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How to cite

U.S. Geological Survey: Long Tom River at Monroe (usgs:14170000). Accessed October 18, 2026 via Nivelmap, https://nivelmap.com/en/united-states/oregon/long-tom-river-at-monroe

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