Saint Vrain Creek at Lyons

The past week

What floods at each level

• 12 ft

  This is an extreme, life threatening flood. Roads crossing the creek downstream through Longmont and all highways into Lyons will likely be flooded and impassable.

• 11 ft

  This is a major, life threatening flood. There is extensive flooding from Lyons downstream through Longmont impacting numerous roads and structures.

• 10.5 ft

  Houses and businesses along the creek from Lyons downstream through Longmont flood as do roads along and crossing Saint Vrain Creek.

• 10 ft

  A number of roads along and crossing Saint Vrain Creek in Lyons are impacted by flooding. Water overtops driveways and parking lots near Main Street in Longmont.

• 9.5 ft

  Flooding affects a significant area in Lyons with a number of houses along the creek impacted. Saint Vrain Creek floods low lying areas downstream in Longmont.

• 9 ft

  Several houses east of 2nd Avenue in Lyons flood.

• 8.5 ft

  Structures flood in low lying areas next to Saint Vrain Creek in Lyons. Lowland and meadow flooding occur along the creek downstream through western Longmont.

• 8 ft

  The creek rises to the base of structures and yards flood east of the 2nd Avenue bridge in Lyons.

• 7.5 ft

  There is lowland and meadow flooding in and downstream of Lyons.

Highest crests on record

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