Welcome to UDFCD’s ALERT System. This website is designed to accommodate smartphones and other small devices.  Apple and Android should be aware that some pages require Adobe Flash®. In time these tools will become more handheld-friendly like our latest ArcGIS webmap.

Users wanting to view a live rain map can begin by simply touching the UDFCD FWS logo. We hope you find this website easy to use and we welcome your feedback.

This site was developed primarily for our flood warning partners. Public users may prefer Contrail® supported by OneRain. See the current NWS forecast and related Twitter feeds. Also discovery interesting facts about some of the region’s worst historic floods from Boulder County’s new ArcGIS Flood Story Map.

National Hydrologic Warning Council
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UDFCD's Real-Time Flood Detection & Current Conditions