On the afternoon of August 25, 2013 the most intense rainfall event occurred in Clark County since the creation of the Regional Flood Control District resulting in record amounts of rain that filled the mile-long Kyle Canyon Detention Basin with 30 feet of water. That basin drained to parts of Grand Teton Road, where flood control facilities had yet to be built, turning the road into a river for three days. Aside from the roadway flooding and damages, there were no reports of structural damages to residences, businesses, or public infrastructure.
Immediately after that event, the District worked with the City of Las Vegas to complete two separate projects along Grand Teton totaling nearly $19 million. One project, from Hualapai to Tee Pee, was completed in November 2015 at a cost of $6.2 million. The other, from Mountain Spa to Durango, was finished in June 2015 at a cost of $12.25 million.
Those projects have worked to keep mountain runoff safely underground until it enters a flood control channel downstream. A $20 million flood control project currently under construction on US-95 from the Beltway crossing to Grand Teton will also alleviate street flooding on the east side of the highway. That project is currently working just north of the Durango interchange on US-95 South and is expected to be finished in January.
Since 2008, the District has spent $150 on 15 different projects in northwest Las Vegas, resulting in two detention basins and 15.6 miles of channels and storm drains.
Full Regional Flood Control District Storm report here.
You can download the images here.