PROJECT ALERT NOTICE (CO) Flooding in Colorado

Date: Thu, 12 Sep 2013 11:02:37 EDT

Summary: Widespread flooding in eastern Colorado, Sept 12, 2013.

Up to 6 inches of rain in the last 24 hours is causing widespread flooding in the foothills and urban corridor from Denver north to Fort Collins, Colorado. Flooding is highest in the Boulder Creek, St Vrain Creek, and Big Thompson River Basins. In these basins, flows are above minor to moderate flood stages and rising. Streams in the Denver urban area also are high. The combined flow from the areas mentioned above will lead to flows above flood stage in the South Platte River on Friday as it flows toward Nebraska.

Flooding from up to 6 inches of rain in 24 hours also occurred overnight in the Fountain Creek Basin in Colorado Springs, south of Denver. Streams peaked about 2 AM and the flood crest in Fountain Creek is now
between Colorado Springs and Pueblo.

At this time no streamgages in Colorado are forecasted to reach major flood stage.

Two deaths attributed to the storm have been reported. A collapsed home along upper Boulder Creek in the town of Nederland killed one person. One person died overnight in Fountain Creek in Colorado Springs.
Evacuation notices and road closures have been issued for several areas in the foothill canyons west of the Denver-Fort Collins urban corridor.

Numerous crews from the Colorado Water Science Center are out today measuring flood flows and obtaining water-quality and sediment samples. Most of the streamgage network remains operational with just a few gages
experiencing equipment malfunctions from the event.