Boulder Creek at Mouth near Longmont water level

Name: Boulder Creek at Mouth near Longmont 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, Boulder Creek, Colorado, United States

Directions

Very low for mid-October

Water level

8.96ft Steady over the last 24 hours

Measured Oct 20, 2026, 10:00 AM MDT (1 hour ago)

Flow: 0.7 cfs

History

7 days

Water level

What this means

Low water at Boulder Creek at Mouth near Longmont: the gauge reads 8.96 ft, far below normal for mid-October.

It has barely moved over the past 24 hours. Without real rain upstream, that is unlikely to change quickly. The 30-day range is 8.94 ft – 9.43 ft.

Fall is often low-water season on rivers, and it usually takes a few days of steady rain to change that.

Compared with 5 years of daily readings for this time of year. How to read levels

Paddling and fishing conditions

At low levels, plan for shorter paddling trips and expect to walk your boat through a few shoals.

Weather at the gauge

The forecast is not available right now.

Sunrise 07:17 AM Sunset 06:14 PM Daylight 10 hr, 58 min Waxing gibbous 70%

Map

Other gauges on Boulder Creek

Gauge	Level	Compared with normal	24 hours	Distance
Boulder Creek at North 75th St. near BoulderRiver gauge, Boulder Creek	4.23 ft	Below flood stage	+0.07 ft	10 mi

Nearby gauges

Gauge	Level	Compared with normal	24 hours	Distance
St Vrain Creek below Boulder Creek at Highway 119 near LongmontRiver gauge, St Vrain Creek	9.71 ft	Below flood stage	−0.01 ft	1.6 mi
Left Hand Creek at Hover Road near LongmontRiver gauge, Left Hand Creek	0.8 cfs	Very low	±0	5.9 mi
South Platte River at Fort LuptonRiver gauge, South Platte River	3.38 ft	Below flood stage	−0.03 ft	11 mi
Big Dry Creek at Mouth near Fort LuptonRiver gauge, Big Dry Creek	27.6 cfs	Normal	−5.3 cfs	11 mi
Big Dry Creek at WestminsterRiver gauge, Big Dry Creek	0.7 cfs	Very low	±0	16 mi
Carter Lake ReservoirReservoir	5,708.47 ft	Normal		16 mi
Big Thompson River at LovelandRiver gauge, Big Thompson River	0.62 ft	Below flood stage	±0	17 mi
Flatiron ReservoirReservoir	5,464.61 ft	Very low		19 mi

Questions and answers

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 Boulder Creek at Mouth near Longmont today?

On Oct 20, 2026, 10:00 AM MDT, the water level was 8.96 ft. Steady over the last 24 hours.

Is Boulder Creek at Mouth near Longmont rising or falling?

Steady over the last 24 hours.

Is the level of Boulder Creek at Mouth near Longmont normal?

Very low for mid-October. Compared with 5 years of daily readings for this time of year.

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:06730500 (Agency page)
Coordinates: 40.13878, -105.02022 (WGS84)
Vertical datum: NGVD29
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	8.96 ft	2026-10-20 16:00	Provisional
Flow	0.7 cfs	2026-10-20 16:00	Provisional

Download

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How to cite

U.S. Geological Survey: Boulder Creek at Mouth near Longmont (usgs:06730500). Accessed October 20, 2026 via Nivelmap, https://nivelmap.com/en/united-states/colorado/boulder-creek-at-mouth-near-longmont

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