River levels near Longmont, Colorado
2 of 5 gauges have both a usable water-level reading and a published minor flood stage. Readings may be delayed; check the observation time on each gauge page. This summary does not establish whether streets or unmonitored waterways near Longmont are flooding.
Boulder Creek at North 75Th St. near Boulder, COSt Vrain Creek below Boulder Creek at Hwy 119 near LongmontLeft Hand Creek at Hover Road near Longmont, COSt. Vrain Creek below Longmont, COBoulder Creek at Mouth near Longmont, COProvisional data: Real-time readings are provisional and subject to revision by the USGS — sensors can be affected by ice, debris, or equipment malfunction. Do not rely on this site for decisions involving personal safety; follow official guidance from the National Weather Service and local authorities.