Colgan Creek near Sebastopol water level

Name: Colgan Creek near Sebastopol 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, Colgan Creek, California, United States

Directions

Below flood stage

Water level

67.73ft Steady over the last 24 hours

Measured Oct 20, 2026, 06:15 PM PDT (36 min ago)

Flow: 0.0 cfs

History

7 days

Water level Minor flood stage

What this means

Water levels are unremarkable at Colgan Creek near Sebastopol, where the gauge shows 67.73 ft.

It is 7.27 ft below the flood stage of 75.00 ft.

It has barely moved over the past 24 hours. The 30-day range is 67.70 ft – 67.74 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

Paddling and fishing conditions

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

For reference, flood stage is 75.00 ft.

What happens at each level

79.00 ft: Major Flooding. Major floodplain inundation and water levels at approximately 1 foot above elevation of bridge deck on Llano Road.
76.50 ft: Moderate Flooding. Additional floodplain and roadway inundation on Llano Road. NWS will issue a Flash Flood Warning, if not yet already issued.
75.00 ft: Minor Flooding. Floodplain upstream of the Llano Road bridge on right bank (north) side begins to flood into adjacent farmland. NWS will issue an Urban/Small Stream Advisory, if not yet already issued.
73.50 ft: Action Stage. Roadside ditch upstream of Llano Road bridge on the left bank (south) side begins to flood. NWS may issue a Flash Flood Watch, if not yet already issued.
67.73 ft: Right now

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

Weather at the gauge

The forecast is not available right now.

Sunrise 07:27 AM Sunset 06:26 PM Daylight 11 hr Waxing gibbous 73%

Map

Other gauges on Colgan Creek

Gauge	Level	Compared with normal	24 hours	Distance
Colgan Creek near Santa RosaRiver gauge, Colgan Creek	97.69 ft	Below flood stage	±0	2.7 mi

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
Laguna De Santa Rosa A Stony Point Road near CotatiRiver gauge, Laguna De Santa Rosa A Stony Point Road	73.23 ft	Below flood stage	+0.03 ft	2.0 mi
Copeland C A Rohnert ParkRiver gauge	1.29 ft	Below flood stage	−0.02 ft	4.2 mi
Laguna De Santa Rosa Creek near SebastopolRiver gauge, Laguna De Santa Rosa Creek	55.48 ft	Below flood stage	+0.01 ft	4.9 mi
Santa Rosa C A Santa RosaRiver gauge	23.25 ft	Below flood stage	+0.04 ft	5.0 mi
Santa Rosa C A Willowside Road near Santa RosaRiver gauge, Santa Rosa C A Willowside Road	57.75 ft	Below flood stage	+0.03 ft	5.4 mi
Matanzas C A Santa RosaRiver gauge	155.17 ft	Below flood stage	+0.01 ft	5.7 mi
Mark West Creek near Mirabel HeightsRiver gauge, Mark West Creek	38.69 ft	Below flood stage	+0.01 ft	10 mi
Russian River near WindsorRiver gauge, Russian River	254 cfs	Normal	±0	11 mi

Questions and answers

What is flood stage for Colgan Creek near Sebastopol?

The official flood stage is 75.00 ft. The level is currently 7.27 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 Colgan Creek near Sebastopol today?

On Oct 20, 2026, 06:15 PM PDT, the water level was 67.73 ft. Steady over the last 24 hours.

Is Colgan Creek near Sebastopol rising or falling?

Steady over the last 24 hours. Steady over the last 7 days.

Is the level of Colgan Creek near Sebastopol normal?

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

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.

Where does this data come from?

The values come directly from the U.S. Geological Survey, the official operator of this gauge, and are in the public domain. We do not estimate or model live values.

For specialists

Station codes, datum, parameters, data quality and downloads

Operator: U.S. Geological Survey
Station code: usgs:11465700 (Agency page)
Coordinates: 38.37349, -122.76828 (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	67.73 ft	2026-10-21 01:15	Provisional
Flow	0.0 cfs	2026-10-21 01:15	Provisional

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How to cite

U.S. Geological Survey: Colgan Creek near Sebastopol (usgs:11465700). Accessed October 21, 2026 via Nivelmap, https://nivelmap.com/en/united-states/california/colgan-creek-near-sebastopol

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