Potential for Low Level/Nuisance Flooding 

Overnight the St Vrain Creek reached 1,080 CFS (cubic feet per second), which is a strong guideline of how fast and how high the river is flowing through Lyons. Many factors contribute to this number including snow run-off, discharge from Button Rock Reservoir and localized rain/storm events. Localized flooding becomes more likely along the St Vrain Creek in Lyons when the water reaches 1,200 CFS.
 
Lyons Fire Protection District, Town of Lyons staff and Boulder County's Office of Emergency Management (OEM) have communicated and want to notify residents to be prepared for possible flooding in the next 72 hours.  

Flooding is possible and residents living in the floodway (pink area on the map) should be prepared to evacuate.
These residents should also secure any temporary furniture and/or outside belongings so that they do not become debris in the water. 

Due to our ground being saturated, Button Rock Reservoir being full and the continued rain patterns, the rivers are running very high and very fast. Watch for flooding in low lying areas. We advise residents to sign up for emergency alert notifications, especially the Boulder County Emergency Management Notification System, via bocoalert.org.

Please note:
•Generally, the water levels peak in the overnight hours.
•Residents should be prepared with essentials such as water, food, flashlights and charged cell phones.
•Avoid standing water, as it may be contaminated.

•Avoid moving water, as little as 6 inches of water can knock you off your feet and 18 inches can float a car.
•Pay attention to flash flood warnings.

•Move to higher ground. This could be either a higher elevation location or a higher floor in your building.
Learn more.

If you would like to monitor the current flows, the Colorado Department of Natural Resources has a monitoring station and gauge in Lyons.