RIVER GAUGE · SAINT VRAIN CREEK
Saint Vrain Creek below Longmont
Boulder County, Colorado
Water level9.54 ft
Flow29 cfs
Last readingSep 16, 2026, 4:00 PM UTC (last recorded)
Action15 ft5,221 cfs
Minor flood15.5 ft6,092 cfs
Moderate flood17 ft9,185 cfs
Major flood18.5 ft13,039 cfs
The past week
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What floods at each level
- 18.5 ft
Major, extensive flooding occurs as a wide expanse of the creek spreads out horizontally across the floodplain.
- 17.5 ft
Flooding affects large areas along the creek with numerous roads and structures impacted.
- 16.5 ft
There is significant flooding of agricultural land along the creek.
- 15.5 ft
Parks and agricultural fields and parks near the creek flood. Railroad tracks may be impacted.
- 15 ft
Water begins to overflow into the lowest areas adjacent to Saint Vrain Creek below its confluence with Boulder Creek.
Highest crests on record
| Date | Level | Flow |
|---|---|---|
| May 8, 2015 | 14.56 ft | 5,080 cfs |
| May 17, 2017 | 13.44 ft | 3,130 cfs |
| May 31, 2014 | 12.97 ft | 2,300 cfs |
More on Saint Vrain Creek
UpstreamSaint Vrain Creek at Hygiene
DownstreamSaint Vrain Creek near Platteville
Get an alert when Saint Vrain Creek rises
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